{"id":20699,"date":"2026-10-03T07:54:29","date_gmt":"2026-10-02T23:54:29","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=20699"},"modified":"2026-10-16T01:06:38","modified_gmt":"2026-10-15T17:06:38","slug":"tool-steel-tempering-isothermal-transformation","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/tool-steel-tempering-isothermal-transformation\/","title":{"rendered":"\uacf5\uad6c\uac15 \ud15c\ud37c\ub9c1 \ubc0f \ub4f1\uc628 \ubcc0\ud0dc"},"content":{"rendered":"

\uacf5\uad6c\uac15 \ud15c\ud37c\ub9c1 \ubc0f \ub4f1\uc628 \ubcc0\ud0dc<\/h1>\n\n\n\n

\ub450 \uac00\uc9c0 \uc11c\ub85c \ub2e4\ub978 \uc628\ub3c4 \uc720\uc9c0\uac00 \uacf5\uad6c\uac15\uc758 \ucd5c\uc885 \uc0c1\ud0dc\ub97c \uacb0\uc815\ud558\uba70, \uc544\ub798\uc758 \ud604\ubbf8\uacbd \uc0ac\uc9c4\uc740 \ub450 \uac00\uc9c0 \ubaa8\ub450\ub97c \ubcf4\uc5ec\uc90d\ub2c8\ub2e4. \uccab \ubc88\uc9f8\ub294 \ub2f4\uae08\uc9c8 \ud6c4\uc5d0 \uc774\uc5b4\uc9c0\ub294 \ud15c\ud37c\ub9c1\uc73c\ub85c, \uc5ec\uae30\uc11c \uc628\ub3c4\uc640 \ud15c\ud37c\ub9c1 \ud69f\uc218\uac00 \uacbd\ub3c4, \ud0c4\ud654\ubb3c \uc720\ud615 \ubc0f \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uc758 \uc591\uc744 \uacb0\uc815\ud569\ub2c8\ub2e4. \ub450 \ubc88\uc9f8\ub294 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uc2dc\uc791 \uc628\ub3c4 \uc774\uc0c1\uc758 \uc5fc\uc695\uc5d0\uc11c\uc758 \ub4f1\uc628 \uc720\uc9c0\ub85c, \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ub300\uc2e0 \ud384\ub77c\uc774\ud2b8 \ub610\ub294 \ubca0\uc774\ub098\uc774\ud2b8\ub97c \uc0dd\uc131\ud558\uba70, \ub2e4\uc74c\uacfc \uac19\uc740 \ub0b4\ucda9\uaca9 \ub4f1\uae09\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uacbd\ub85c\uc785\ub2c8\ub2e4 S7<\/a> \uadf8\ub9ac\uace0 O1<\/a> \ubcc0\ud615\uc774\ub098 \uade0\uc5f4 \uc704\ud5d8\uc744 \ub0ae\ucdb0\uc57c \ud560 \ub54c.<\/p>\n\n\n\n

\uacf5\uad6c\uac15\uc744 \ub2f4\uae08\uc9c8 \uc9c1\ud6c4\uc5d0 \ud15c\ud37c\ub9c1\ud558\ub294 \uc774\uc720<\/h2>\n\n\n\n

\uacf5\uad6c\uac15\uc744 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub85c \ub2f4\uae08\uc9c8\ud558\uba74 \ub2e8\uba74\uc5d0 \ub9e4\uc6b0 \ub192\uc740 \ubcc0\ud0dc \uc751\ub825\uc774 \ub0a8\uc73c\uba70, \ud15c\ud37c\ub9c1\uc774 \uc774\ub97c \uc644\ud654\ud569\ub2c8\ub2e4. \ub2f4\uae08\uc9c8 \ud6c4 \ud15c\ud37c\ub9c1\ud558\uc9c0 \uc54a\uc740 \uacf5\uad6c\uac15\uc740 \uade0\uc5f4\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc73c\uba70, \uadf8 \uc704\ud5d8\uc740 \ub2f4\uae08\uc9c8 \uc18d\ub3c4\uc640 \ud615\uc0c1\uc758 \uc751\ub825 \uc9d1\uc911\ubd80\uc5d0 \ub530\ub77c \uc99d\uac00\ud569\ub2c8\ub2e4. \uacf5\ub7ad \uacbd\ud654 \ub4f1\uae09\uc740 \uc774\ub7ec\ud55c \uc704\ud5d8\uc5d0 \ub35c \ub178\ucd9c\ub418\ub294\ub370, \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub97c \ud615\uc131\ud558\ub294 \ub290\ub9b0 \ub0c9\uac01\uc774 \ub0c9\uac01 \uc911\uc5d0 \uc751\ub825\uc758 \uc77c\ubd80\ub97c \uc644\ud654\ud558\uae30 \ub54c\ubb38\uc774\uba70, \uc774\uac83\uc774 \ubcf5\uc7a1\ud55c \uae08\ud615\uc5d0 \uacf5\ub7ad \uacbd\ud654 \ub4f1\uae09\uc744 \uc120\ud0dd\ud558\ub294 \uc2e4\uc6a9\uc801\uc778 \uc774\uc720 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\uac01 \ud15c\ud37c\ub9c1 \uc628\ub3c4\uac00 \ud558\ub294 \uc77c<\/h2>\n\n\n\n

\uacf5\uad6c\uac15 \uc0dd\uc0b0\uc758 \uc0c1\ub2f9 \ubd80\ubd84\uc740 175~230 °C\uc5d0\uc11c \ud15c\ud37c\ub9c1\ub418\uba70, \uc774 \uc628\ub3c4\uc5d0\uc11c \ud15c\ud37c\ub9c1\uc740 \ub2f4\uae08\uc9c8 \uc751\ub825 \uc644\ud654 \uc678\uc5d0\ub294 \uc870\uc9c1\uc5d0 \uac70\uc758 \uc601\ud5a5\uc744 \uc8fc\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uacbd\ub3c4\ub294 \uac70\uc758 \ubcc0\ud558\uc9c0 \uc54a\uace0 \ud604\ubbf8\uacbd \uc0ac\uc9c4\uc740 \ub2f4\uae08\uc9c8 \uc9c1\ud6c4\uc640 \uac70\uc758 \ub3d9\uc77c\ud558\uac8c \ubcf4\uc774\ubbc0\ub85c, \uc800\uc628 \ud15c\ud37c\ub9c1\uc740 \uace0\uc628\uc5d0\uc11c \uacbd\ub3c4\ub97c \uc720\uc9c0\ud574\uc57c \ud558\ub294 \uae08\ud615\uc5d0 \uc801\ud569\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc5f4\uac04 \uac00\uacf5\uac15\uacfc \uace0\uc18d\ub3c4\uac15\uc740 \ud6e8\uc52c \ub192\uc740 \uc628\ub3c4\ub85c \ucc98\ub9ac\ud558\ub294\ub370, \ud569\uae08 \ud568\ub7c9\uc774 \uc5f0\ud654 \uc800\ud56d\uc131\uc744 \ubd80\uc5ec\ud558\uae30 \ub54c\ubb38\uc774\uba70, \uc774 \uc628\ub3c4\uc5d0\uc11c \ud15c\ud37c\ub9c1\uc740 2\ucc28 \uacbd\ud654\ub97c \uc77c\uc73c\ud0a4\uace0 \ud0c4\ud654\ubb3c\uc758 \uc131\uc9c8\uc744 \ubcc0\ud654\uc2dc\ud0b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\ud15c\ud37c\ub9c1 \ud69f\uc218\ub294 \ud569\uae08 \uc218\uc900\uc5d0 \ub530\ub77c \uacb0\uc815\ub429\ub2c8\ub2e4. \uac00\uc7a5 \ud569\uae08\ub7c9\uc774 \uc801\uc740 \uacf5\uad6c\uac15\uc740 \ub2e8\uc77c \ud15c\ud37c\ub9c1\uc744 \ud558\uba70, \uc77c\ubc18\uc801\uc73c\ub85c \ub2e8\uba74 \ub450\uaed8 25 mm\ub2f9 2 h\uc785\ub2c8\ub2e4. \ud569\uae08\ub7c9\uc774 \ub192\uc740 \uac15\uc740 \ubcf4\ud1b5 \ub450 \ubc88, \uace0\uc18d\ub3c4\uac15\uc740 \uc138 \ubc88 \ud15c\ud37c\ub9c1\ud558\ub294\ub370, \ubc18\ubcf5 \ud15c\ud37c\ub9c1\uc774 \uc870\uc9c1\uc744 \uc870\uc815\ud558\uace0 \uc548\uc815\ud654\ud558\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc544\ub798 \uc2dc\ub9ac\uc988\ub294 \ub124 \uac00\uc9c0 \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0\uc11c\uc758 O1\uc774\uba70, \uac01 \uc0ac\uc9c4\uc5d0 \ud45c\uc2dc\ub41c \uc22b\uc790\ub294 \ub3d9\uc77c \uc2dc\ud3b8\uc5d0\uc11c \uce21\uc815\ub41c \uacbd\ub3c4\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

\"AISI
Fig. 69. O1\uc744 800 °C\uc5d0\uc11c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654\ud558\uace0 \uc720\ub0c9\ud55c \ud6c4 200 °C (a), 315 °C (b), 425 °C (c), 540 °C (d)\uc5d0\uc11c \ud15c\ud37c\ub9c1. \uc2dc\ub9ac\uc988 \uc804\uccb4\uc5d0\uc11c \uacbd\ub3c4\ub294 60\uc5d0\uc11c 43 HRC\ub85c \uac10\uc18c\ud558\uc9c0\ub9cc \uad11\ud559 \uc870\uc9c1\uc740 \uac70\uc758 \ubcc0\ud558\uc9c0 \uc54a\uc74c. 4% picral, 500x.<\/figcaption><\/figure>\n\n\n\n

\uc57d 540 °C\ub85c \ud15c\ud37c\ub9c1\ud558\uba74 \uad11\ud559 \ud604\ubbf8\uacbd\uc73c\ub85c \uad00\ucc30\ub418\ub294 \uc870\uc9c1\uc5d0\ub294 \ubbf8\uc138\ud55c \ucc28\uc774\ub9cc \uc0dd\uae41\ub2c8\ub2e4. \ubcc0\ud558\ub294 \uac83\uc740 \uc2dc\ud3b8\uc758 \uc5d0\uce6d \uc18d\ub3c4\uc640 \uae30\uc9c0\uc758 \uc5b4\ub450\uc6c0\uc785\ub2c8\ub2e4. \ub69c\ub837\ud55c \uc870\uc9c1 \ubcc0\ud654\ub294 \ud558\ubd80 \uc784\uacc4 \uc628\ub3c4 \ubc14\ub85c \uc544\ub798\uc5d0\uc11c\uc758 \ud15c\ud37c\ub9c1\uc774 \ud544\uc694\ud558\uba70, \uadf8\ub807\uac8c \ub192\uc740 \ud15c\ud37c\ub9c1\uc740 \uc5b4\ub2d0\ub9c1 \uc678\uc5d0\ub294 \uacf5\uad6c\ub098 \uae08\ud615\uc5d0 \uc2e4\uc6a9\uc801\uc778 \uc6a9\ub3c4\uac00 \uc5c6\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uacbd\ub3c4\uac00 \uc5bc\ub9c8\ub098 \ub5a8\uc5b4\uc9c0\ub294\uc9c0, \uadf8\ub9ac\uace0 \ub5a8\uc5b4\uc9c0\uae30\ub294 \ud558\ub294\uc9c0\ub294 \ud574\ub2f9 \uac15\uc885\uc774 \uc18d\ud55c \ub4f1\uae09\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9c0\uba70, \uc774 \ub4f1\uae09\ub4e4\uc740 \ud558\ub098\uc758 \ucc28\ud2b8\uc5d0 \uadf8\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\"Four
\uadf8\ub9bc 11.18. \uacf5\uad6c\uac15\uc758 \ub124 \uac00\uc9c0 \ud15c\ud37c\ub9c1 \ubc18\uc751 \ub4f1\uae09, \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0 \ub530\ub978 \uacbd\ub3c4. \ub4f1\uae09 1\uc740 \uc800\ud569\uae08 \ubc0f \ud0c4\uc18c\uac15 \ub4f1\uae09\uc73c\ub85c \uccab \ubc88\uc9f8 \ud15c\ud37c\ub9c1 \uc628\ub3c4\ubd80\ud130 \uc5f0\ud654\ub429\ub2c8\ub2e4. \ub4f1\uae09 2\ub294 \uc911\ud569\uae08 \ub0b4\uc9c0 \uace0\ud569\uae08 \ub0c9\uac04 \uac00\uacf5 \ub4f1\uae09\uc73c\ub85c, \ud569\uae08 \ucca8\uac00\uac00 \ud0c4\ud654\ubb3c \uc11d\ucd9c\uc744 \uc9c0\uc5f0\uc2dc\ud0a4\uae30 \ub54c\ubb38\uc5d0 \uacbd\ub3c4\ub97c \uc720\uc9c0\ud569\ub2c8\ub2e4. \ub4f1\uae09 3\uc740 \uace0\uc18d\ub3c4\uac15\uc73c\ub85c, \ub192\uc740 \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0\uc11c 2\ucc28 \uacbd\ud654 \ud53c\ud06c\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4. \ub4f1\uae09 4\ub294 \uae34 \ud15c\ud37c\ub9c1 \ubc94\uc704\uc5d0 \uac78\uccd0 \ub192\uc740 \uacbd\ub3c4\ub97c \uc720\uc9c0\ud558\ub2e4\uac00 \ub9c8\uce68\ub0b4 \ub5a8\uc5b4\uc9d1\ub2c8\ub2e4. \uc774 \ucc28\ud2b8\uc5d0\uc11c \uac15\uc885\uc758 \ub4f1\uae09\uc744 \uc77d\ub294 \uac83\uc740 \ud15c\ud37c\ub9c1 \uc628\ub3c4\ub97c \uc120\ud0dd\ud558\uae30 \uc804\uc758 \ub2e8\uacc4\uc785\ub2c8\ub2e4. \ucd9c\ucc98: E. Essadiqi, Tool Steels, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 11.18.<\/figcaption><\/figure>\n\n\n\n

\uad11\ud559 \ud604\ubbf8\uacbd\uc73c\ub85c \ubcfc \uc218 \uc5c6\ub294 \ud0c4\ud654\ubb3c \ubcc0\ud654<\/h2>\n\n\n\n

\uac15\ud55c \ud0c4\ud654\ubb3c \ud615\uc131 \uc6d0\uc18c\uac00 \uc874\uc7ac\ud558\ub294 \uacbd\uc6b0, \uace0\uc628 \ud15c\ud37c\ub9c1\uc740 \ud0c4\ud654\ubb3c\uc758 \uc870\uc131\uacfc \uc720\ud615\uc744 \ubcc0\ud654\uc2dc\ud0a4\uba70, \uad11\ud559 \ud604\ubbf8\uacbd\uc73c\ub85c\ub294 \uc774\ub97c \uad00\ucc30\ud560 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \uc544\ub798 \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 420 \ud0c0\uc785\ubcf4\ub2e4 \ud569\uae08 \uc6d0\uc18c\uac00 \ub354 \ub9ce\uc774 \ucca8\uac00\ub418\uace0 \ud06c\ub86c \uacf5\uad6c\uac15\uacfc \ub3d9\uc77c\ud558\uac8c \uac70\ub3d9\ud558\ub294 12% \ud06c\ub86c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uac15\uc5d0\uc11c\uc758 \uc774\ub7ec\ud55c \ubcc0\ud654\ub97c \ucd94\uc801\ud569\ub2c8\ub2e4. \ub0ae\uc740 \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0\uc11c\ub294 \uc874\uc7ac\ud558\ub294 \ud0c4\ud654\ubb3c\uc774 M3C\uc785\ub2c8\ub2e4. \uc628\ub3c4\uc640 \uc2dc\uac04\uc774 \uc99d\uac00\ud568\uc5d0 \ub530\ub77c<\/a> M7C3\ub85c \ub300\uccb4\ub418\uace0 \uadf8 \ub2e4\uc74c M23C6\ub85c \ub300\uccb4\ub418\uba70, \ubc94\uc704\uc758 \uc0c1\ud55c\uc5d0\uc11c\ub294 M23C6\ub9cc \ub0a8\uc2b5\ub2c8\ub2e4. \ud574\ub2f9 \uac15\uc740 \ub610\ud55c \ub192\uc740 \uc9c8\uc18c \ud568\ub7c9\uc744 \uac00\uc9c0\uace0 \uc788\uc5c8\uc73c\uba70, \uadf8 \uc548\uc5d0\uc11c M2N \uc9c8\ud654\ubb3c\uc774 \ubc1c\uacac\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ud145\uc2a4\ud150 \uace0\uc18d\ub3c4\uac15\uc5d0\uc11c\ub294 \ub3d9\uc77c\ud55c \uc21c\uc11c\uac00 \ub354 \uc9c4\ud589\ub418\uc5b4 \uc57d 600 °C\uc5d0\uc11c \uac15\ud55c 2\ucc28 \uacbd\ud654\uac00 \ub098\ud0c0\ub098\uba70, \uc774 \ub450 \uac15\uc5d0 \ub300\ud55c \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \ub2e4\uc74c\uc5d0 \uc788\uc2b5\ub2c8\ub2e4 \uacf5\uad6c\uac15 \ubbf8\uc138\uc870\uc9c1<\/a> \ud398\uc774\uc9c0.<\/p>\n\n\n\n

\"Time
Fig. 67. 500~700 °C \uc0ac\uc774\uc758 30\ud68c \uc774\uc0c1 \ud15c\ud37c\ub9c1 \ucc98\ub9ac\uc5d0 \uae30\ubc18\ud55c, \ud15c\ud37c\ub9c1 \ud6c4 \ub450 12% \ud06c\ub86c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uac15\uc5d0 \uc874\uc7ac\ud558\ub294 \ud0c4\ud654\ubb3c\uc758 \uc2dc\uac04-\uc628\ub3c4 \ub2e4\uc774\uc5b4\uadf8\ub7a8. \uc628\ub3c4\uc640 \uc2dc\uac04\uc774 \uc99d\uac00\ud568\uc5d0 \ub530\ub77c M3C\uac00 M7C3\ub85c, \uadf8\ub2e4\uc74c M23C6\ub85c \ubc14\ub01d\ub2c8\ub2e4.<\/figcaption><\/figure>\n\n\n\n

\ud0c4\ud654\ubb3c\uc758 \ubcc0\ud654 \uc790\uccb4\ub294 \uad11\ud559 \ud604\ubbf8\uacbd\uc758 \ubd84\ud574\ub2a5 \uc774\ud558\uc774\ubbc0\ub85c, \ub300\uc2e0 \ud22c\uacfc\uc804\uc790\ud604\ubbf8\uacbd\uc73c\ub85c \uad00\ucc30\ud55c\ub2e4. \uc544\ub798 \ub450 \ud604\ubbf8\uacbd \uc0ac\uc9c4\uc740 \ub3d9\uc77c\ud55c \ub2f4\uae08\uc9c8 \uac15\uc73c\ub85c, \ud558\ub098\ub294 300 °C\uc5d0\uc11c 2\ubd84\uac04 \ud15c\ud37c\ub9c1\ud55c \uac83\uc774\uace0 \ub2e4\ub978 \ud558\ub098\ub294 600 °C\uc5d0\uc11c 1\ubd84\uac04 \ud15c\ud37c\ub9c1\ud55c \uac83\uc774\ub2e4.<\/p>\n\n\n\n

\"TEM
\uadf8\ub9bc 2.11. \ub2f4\uae08\uc9c8 \ubc0f \ud15c\ud37c\ub9c1\ub41c 300-M \uac15\uc758 \ud22c\uacfc\uc804\uc790\ud604\ubbf8\uacbd \uc0ac\uc9c4. (a) 300 °C\uc5d0\uc11c 2\ubd84\uac04 \ud15c\ud37c\ub9c1\ud55c \ud6c4, \uc2dc\uba58\ud0c0\uc774\ud2b8\uac00 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ub798\uc2a4 \ub0b4\ubd80\uc5d0 \uc587\uc740 \ud310\uc73c\ub85c \uc11d\ucd9c\ub418\uc5c8\ub2e4. (b) 600 °C\uc5d0\uc11c 1\ubd84\uac04 \ud15c\ud37c\ub9c1\ud55c \ud6c4, \ub3d9\uc77c\ud55c \uac15\uc5d0\ub294 \ub300\uc2e0 \ubbf8\uc138\ud55c \ud569\uae08 \ud0c4\ud654\ubb3c\uc774 \uc874\uc7ac\ud55c\ub2e4. \ub450 \ud2b9\uc9d5 \ubaa8\ub450 \uad11\ud559 \ud604\ubbf8\uacbd\uc758 \ubd84\ud574\ub2a5 \uc774\ud558\uc5d0 \uc704\uce58\ud558\ubbc0\ub85c, \ud15c\ud37c\ub9c1 \uc628\ub3c4\ub294 \ud604\ubbf8\uacbd \uc0ac\uc9c4\ub9cc\uc73c\ub85c \ud310\ub2e8\ud558\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \uac15\uacfc \uadf8 \uacbd\ub3c4 \uace1\uc120\uc73c\ub85c\ubd80\ud130 \uc124\uc815\ud55c\ub2e4. 0.5 µm \uc2a4\ucf00\uc77c \ubc14. \ucd9c\ucc98: S.S. Babu, Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 2.11.<\/figcaption><\/figure>\n\n\n\n

2\ucc28 \uacbd\ud654\ub294 \uace0\uc18d\ub3c4\uac15\uc744 \uc644\ub9cc\ud558\uac8c\uac00 \uc544\ub2c8\ub77c \ub728\uac81\uac8c \ud15c\ud37c\ub9c1\ud558\ub294 \uc774\uc720\uc774\uba70, \uac01 \ud0c4\ud654\ubb3c \ud615\uc131 \uc6d0\uc18c\uac00 \uc774\uc5d0 \uae30\uc5ec\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\"Secondary
\uadf8\ub9bc 11.19. \ubc14\ub098\ub4d0 \ud568\uc720 \uacf5\uad6c\uac15\uc758 2\ucc28 \uacbd\ud654: \ub124 \uac00\uc9c0 \ud0c4\uc18c \ubc0f \ubc14\ub098\ub4d0 \uc870\ud569\uc5d0 \ub300\ud55c \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0 \ub530\ub978 \uacbd\ub3c4, \uacc4\uc0b0\ub41c 0.50 % \ud0c4\uc18c \uace1\uc120\uc744 \uae30\uc900\uc73c\ub85c \ud568. \uadf8\ub798\ud504 \uc624\ub978\ucabd\uc758 \ud53c\ud06c\ub294 \ub2f4\uae08\uc9c8 \uc0c1\ud0dc\uc758 \uc870\uc9c1\uc774 \uc774\uc644\ub418\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \ud15c\ud37c\ub9c1 \uc911\uc5d0 \ubc14\ub098\ub4d0 \ud0c4\ud654\ubb3c\uc774 \uc11d\ucd9c\ub418\ub294 \uac83\uc774\uba70, \uace0\uc18d\ub3c4 \uacf5\uad6c\uac00 \uc808\uc0ad\ud558\ub294 \uc628\ub3c4\uc5d0\uc11c \uacbd\ub3c4\ub97c \uc720\uc9c0\uc2dc\ud0a4\ub294 \uac83\uc740 \ubc14\ub85c \uc774 \ubd84\uc0b0\uc785\ub2c8\ub2e4. \ucd9c\ucc98: E. Essadiqi, Tool Steels, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 11.19.<\/figcaption><\/figure>\n\n\n\n

\ud145\uc2a4\ud150\uc740 \ub2e4\ub978 \ud0c4\ud654\ubb3c\ub85c\ubd80\ud130 \ub3d9\uc77c\ud55c \ud53c\ud06c\ub97c \uc0dd\uc131\ud558\uba70, \uadf8 \ud06c\uae30\ub294 \uc5bc\ub9c8\ub098 \ub9ce\uc740 \ud145\uc2a4\ud150\uc774 \uace0\uc6a9\ub418\uc5b4 \uc788\ub294\uc9c0\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n\n\n\n

\"Secondary
\uadf8\ub9bc 11.20. \ud145\uc2a4\ud150 \ud568\uc720 \uacf5\uad6c\uac15\uc758 2\ucc28 \uacbd\ud654: \ub2e4\uc12f \uac00\uc9c0 \ud0c4\uc18c \ubc0f \ud145\uc2a4\ud150 \uc870\ud569\uc5d0 \ub300\ud55c \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0 \ub530\ub978 \uacbd\ub3c4. \ud145\uc2a4\ud150\uc740 \ub3d9\uc77c\ud55c \ud53c\ud06c\uc5d0 \ub3c4\ub2ec\ud558\uae30 \uc704\ud574 \ubc14\ub098\ub4d0\ubcf4\ub2e4 \ub354 \ub9ce\uc740 \ucca8\uac00\ub7c9\uc774 \ud544\uc694\ud558\uba70, \uc774\uac83\uc774 \ud145\uc2a4\ud150 \uace0\uc18d\ub3c4 \ub4f1\uae09\uc774 12~18 %\ub97c \ud568\uc720\ud558\uace0 \ubab0\ub9ac\ube0c\ub374 \ub4f1\uae09\uc774 \uadf8 5\ubd84\uc758 1\uc5d0 \ud574\ub2f9\ud558\ub294 \ubab0\ub9ac\ube0c\ub374\uc744 \ud568\uc720\ud558\ub294 \uc774\uc720\uc785\ub2c8\ub2e4. \ucd9c\ucc98: E. Essadiqi, Tool Steels, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 11.20.<\/figcaption><\/figure>\n\n\n\n

\ubab0\ub9ac\ube0c\ub374\uc740 \ub300\ubd80\ubd84\uc758 \uacf5\uad6c\uac15 \ub4f1\uae09\uc774 \uae30\ubc18\uc73c\ub85c \ud558\ub294 \uc6d0\uc18c\uc774\uba70, \uc774\ub4e4 \ub4f1\uae09\uc774 \ud568\uc720\ud558\ub294 \uc218\uc900\uc5d0\uc11c \ud15c\ud37c\ub9c1 \uc2dc \uacbd\ud654\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\"Secondary
\uadf8\ub9bc 11.21. \ubab0\ub9ac\ube0c\ub374 \ud568\uc720 \uacf5\uad6c\uac15\uc758 2\ucc28 \uacbd\ud654: \ub2e4\uc12f \uac00\uc9c0 \ud0c4\uc18c \ubc0f \ubab0\ub9ac\ube0c\ub374 \uc870\ud569\uc5d0 \ub300\ud55c \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0 \ub530\ub978 \uacbd\ub3c4, \ub3d9\uc77c\ud55c \uacc4\uc0b0\ub41c 0.50 % \ud0c4\uc18c \uae30\uc900 \uace1\uc120 \ud3ec\ud568. \ud53c\ud06c\ub294 \ud145\uc2a4\ud150\uc758 \uacbd\uc6b0\ubcf4\ub2e4 \ub0ae\uc740 \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0 \uc704\uce58\ud558\uba70, \uc774\ub294 M \ubc0f T \uace0\uc18d\ub3c4 \ub4f1\uae09 \uac04\uc758 \uc2e4\uc9c8\uc801\uc778 \ucc28\uc774\uc785\ub2c8\ub2e4. \ucd9c\ucc98: E. Essadiqi, Tool Steels, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 11.21.<\/figcaption><\/figure>\n\n\n\n

\ud06c\ub86c\uc740 \ub124 \uac00\uc9c0 \ud0c4\ud654\ubb3c \ud615\uc131 \uc6d0\uc18c \uc911 \uac00\uc7a5 \ub192\uc740 \ucca8\uac00\ub7c9\uc5d0\uc11c \ub3d9\uc77c\ud55c \ubc18\uc751\uc5d0 \uae30\uc5ec\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\"Secondary
\uadf8\ub9bc 11.22. \ud06c\ub86c \ud568\uc720 \uacf5\uad6c\uac15\uc758 2\ucc28 \uacbd\ud654: \ub124 \uac00\uc9c0 \ud0c4\uc18c \ubc0f \ud06c\ub86c \uc870\ud569\uc5d0 \ub300\ud55c \ud15c\ud37c\ub9c1 \uc628\ub3c4\uc5d0 \ub530\ub978 \uacbd\ub3c4. \ud06c\ub86c \ud0c4\ud654\ubb3c\uc740 \ubc14\ub098\ub4d0 \ud0c4\ud654\ubb3c\ubcf4\ub2e4 \ub2a6\uace0 \ub290\ub9ac\uac8c \uc11d\ucd9c\ub418\ubbc0\ub85c, \uc774 \uadf8\ub798\ud504\uc758 \ud53c\ud06c\ub294 \ub113\uace0 \uadf8 \uc591\ucabd\uc5d0\uc11c \uacbd\ub3c4\uac00 \ub5a8\uc5b4\uc9d1\ub2c8\ub2e4. \ucd9c\ucc98: E. Essadiqi, Tool Steels, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 11.22.<\/figcaption><\/figure>\n\n\n\n

\uc870\uc9c1\uc5d0 \ub0a8\uc544 \uc788\ub358 \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8<\/h2>\n\n\n\n

\uad11\ud559 \ud604\ubbf8\uacbd\uc73c\ub85c \ubcfc \uc218 \uc788\uc744 \uc815\ub3c4\ub85c \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\uac00 \uc874\uc7ac\ud55c\ub2e4\uba74, \uadf8 \uac15\uc740 \uacfc\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654\ub41c \uac83\uc785\ub2c8\ub2e4. \ud15c\ud37c\ub9c1 \uc628\ub3c4\uac00 \ucda9\ubd84\ud788 \ub192\uc9c0 \uc54a\uc73c\uba74 \ud15c\ud37c\ub9c1\uc740 \ub192\uc740 \uc218\uc900\uc758 \uc794\ub958 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub97c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub098 \ubca0\uc774\ub098\uc774\ud2b8\ub85c \ubcc0\ud0dc\uc2dc\ud0a4\uc9c0 \ubabb\ud558\uba70, \ub0a8\uc544 \uc788\ub294 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub294 \uc0ac\uc6a9 \uc911 \uacf5\uad6c\uac00 \ubc1b\ub294 \ucda9\uaca9\uc744 \uacac\ub51c \ub9cc\ud07c \uc548\uc815\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \uc0ac\uc6a9 \uc911 \ubcc0\ud0dc\uac00 \uc77c\uc5b4\ub098\uba74 \uc8fc\ubcc0 \uae30\uc9c0\uac00 \ub108\ubb34 \ub2e8\ub2e8\ud558\uace0 \uc5f0\uc131\uc774 \ub0ae\uc544 \ubcc0\ud0dc \uc751\ub825\uc744 \ud761\uc218\ud558\uc9c0 \ubabb\ud558\uace0 \uacf5\uad6c\uac00 \uade0\uc5f4\ub429\ub2c8\ub2e4. \uc774\uac83\uc774 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\ub97c \uacb0\uc815\ub9bd\uc774 \ubbf8\uc138\ud55c \uac12\uc73c\ub85c \uc720\uc9c0\ud558\ub294 \uc774\uc720\uc774\uba70, \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc2dc\ub9ac\uc988<\/a> \uc774 \uc0ac\uc774\ud2b8\uc5d0\uc11c \ub4f1\uae09\ubcc4\ub85c \ub2e4\ub8f9\ub2c8\ub2e4.<\/p>\n\n\n\n

\ub108\ubb34 \ub290\ub9b0 \ub2f4\uae08\uc9c8\uc774 \ub0a8\uae30\ub294 \uac83<\/h2>\n\n\n\n

\uc644\uc804\ud788 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\uac00 \uc544\ub2cc \uc870\uc9c1\uc740 \uacf5\uad6c\uac15 \ud604\ubbf8\uacbd \uc0ac\uc9c4\uc5d0\uc11c \ud655\uc778\ud558\ub294 \ub610 \ub2e4\ub978 \uacb0\ud568\uc785\ub2c8\ub2e4. \uc774\ub294 \ud574\ub2f9 \ub4f1\uae09\uc758 \uacbd\ud654\ub2a5\uc774 \uc120\ud0dd\ub41c \ub2e8\uba74 \ud06c\uae30\uc640 \ub2f4\uae08\uc9c8 \ub9e4\uccb4\uc5d0 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc744 \ub54c \ub098\ud0c0\ub098\uba70, \uadf8 \uacb0\uacfc \uc870\uc9c1\uc5d0 \ud384\ub77c\uc774\ud2b8 \ub610\ub294 \ubca0\uc774\ub098\uc774\ud2b8\uac00 \uc0dd\uae30\uace0 \ub3c4\uba74\uc758 \uc218\uce58\ubcf4\ub2e4 \ub0ae\uc740 \uacbd\ub3c4\uac00 \ub429\ub2c8\ub2e4. \uc18c\uc218\uc758 \uc544\uacf5\uc11d\uac15 \ub4f1\uae09\uc5d0\uc11c\ub294 \ud398\ub77c\uc774\ud2b8\ub3c4 \uc874\uc7ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5fc\uc218 \ubc0f \uc218\uacbd\ud654 \ub4f1\uae09\uc740 \ubd80\ud488\uc744 \uc7a1\ub294 \uc9d1\uac8c\uac00 \ud574\ub2f9 \ud45c\uba74 \ubd80\uc704\ub97c \ub354 \ub290\ub9ac\uac8c \ub0c9\uac01\uc2dc\ud0a4\uac70\ub098, \ub2f4\uae08\uc9c8 \ub9e4\uccb4\uc758 \uad6d\ubd80 \ube44\ub4f1\uc73c\ub85c \uc0dd\uae34 \uc99d\uae30 \uc8fc\uba38\ub2c8\ub97c \uae68\ub728\ub9ac\uae30\uc5d0 \uad50\ubc18\uc774 \ub108\ubb34 \uc57d\ud558\uc5ec \ubc1c\uc0dd\ud558\ub294 \ucf00\uc774\uc2a4 \ub0b4\ubd80\uc758 \uc5f0\uc9c8\uc810\uc774\ub77c\ub294 \ub450 \ubc88\uc9f8 \uc704\ud5d8\uc744 \uac00\uc9c0\uace0 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\uc5f0\uc18d\ub0c9\uac01\uace1\uc120\ub3c4\ub294 \uc720\uc9c0 \uc2dc\uac04 \ub300\uc2e0 \ub0c9\uac01 \uace1\uc120\uc73c\ub85c \ub3d9\uc77c\ud55c \ub0b4\uc6a9\uc744 \ubcf4\uc5ec\uc8fc\uba70, \uc2e4\uc81c \ub2f4\uae08\uc9c8\uc5d0 \ubd80\ud569\ud558\ub294 \ub3c4\ud45c\uc785\ub2c8\ub2e4. \uc544\ub798 \ub3c4\ud45c\ub294 \uacf5\uc11d\uac15\uc758 \ud398\ub77c\uc774\ud2b8, \ud384\ub77c\uc774\ud2b8, \ubca0\uc774\ub098\uc774\ud2b8 \ubc0f \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uc601\uc5ed\uc744 \ub098\ud0c0\ub0b4\uba70, \uc5ec\ub7ec \ub0c9\uac01 \uc18d\ub3c4 \uace1\uc120\uc774 \uadf8 \uc704\uc5d0 \uadf8\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\"Continuous
\uadf8\ub9bc 3.15. \uacf5\uc11d \ud0c4\uc18c\uac15\uc758 \uc5f0\uc18d\ub0c9\uac01\ubcc0\ud0dc(CCT) \uc120\ub3c4\ub85c, Ac3, Ac1 \ubc0f Ms \uc120\uacfc \ud398\ub77c\uc774\ud2b8(F), \ud384\ub77c\uc774\ud2b8(P), \ubca0\uc774\ub098\uc774\ud2b8(B) \ubc0f \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8(M) \uc601\uc5ed\uc774 \ud45c\uc2dc\ub418\uc5b4 \uc788\uc73c\uba70, \ub2e4\uc591\ud55c \ub0c9\uac01 \uc18d\ub3c4\uc758 \ub0c9\uac01 \uace1\uc120\uc774 \uadf8 \uc704\uc5d0 \uadf8\ub824\uc838 \uc788\uc2b5\ub2c8\ub2e4. \ud398\ub77c\uc774\ud2b8\uc640 \ud384\ub77c\uc774\ud2b8 \ub178\uc988\ub97c \ud1b5\uacfc\ud558\uc9c0 \uc54a\ub294 \ub0c9\uac01 \uc18d\ub3c4\ub294 \uc644\uc804\ud55c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uc870\uc9c1\uc744 \uc5bb\uc2b5\ub2c8\ub2e4. \ub354 \ub290\ub9b0 \uace1\uc120\uc740 \uba3c\uc800 \ud574\ub2f9 \uc601\uc5ed\uc744 \ud1b5\uacfc\ud558\uc5ec \ub3c4\uba74 \uc544\ub798\uc5d0 \uacbd\ub3c4\ub85c \ud45c\uc2dc\ub418\ub294 \ud398\ub77c\uc774\ud2b8 \ub610\ub294 \ud384\ub77c\uc774\ud2b8\ub97c \ub0a8\uae41\ub2c8\ub2e4. \uc608\uc2dc \uac15\uc7ac\ub294 \uacf5\uc11d \ud0c4\uc18c\uac15\uc774\uba70 \uacf5\uad6c\uac15 \ub4f1\uae09\uc774 \uc544\ub2d9\ub2c8\ub2e4. \uacf5\uad6c\uac15 \ub4f1\uae09\uc740 \ud569\uae08 \uc6d0\uc18c\uac00 \ub178\uc988\ub97c \uc624\ub978\ucabd\uc73c\ub85c \ubc00\uc5b4\ub0b4\uae30 \ub54c\ubb38\uc5d0 \ub354 \uc624\ub978\ucabd\uc5d0 \uc704\uce58\ud569\ub2c8\ub2e4. \ucd9c\ucc98: A.V. Sverdlin and A.R. Ness, Fundamental Concepts in Steel Heat Treatment, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 3.15.<\/figcaption><\/figure>\n\n\n\n

\uc5fc\uc695\uc5d0\uc11c\uc758 \ub4f1\uc628 \ubcc0\ud0dc<\/h2>\n\n\n\n

\uacf5\uad6c\uac15\uc744 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uc2dc\uc791 \uc628\ub3c4 \uc774\uc0c1\uc5d0\uc11c \uc720\uc9c0\ud558\uc5ec \uadf8\uacf3\uc5d0\uc11c \ubcc0\ud0dc\ub97c \uc644\ub8cc\uc2dc\ud0a4\uba74 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ub300\uc2e0 \ud384\ub77c\uc774\ud2b8 \ub610\ub294 \ubca0\uc774\ub098\uc774\ud2b8\uac00 \uc0dd\uc131\ub418\uba70, \uc720\uc9c0 \uc628\ub3c4\uac00 \uc5b4\ub290 \uac83\uc744 \uc0dd\uc131\ud560\uc9c0 \uacb0\uc815\ud569\ub2c8\ub2e4. \uc544\ub798 \ub124 \uc0ac\uc9c4\uc740 \ud558\ub098\uc758 \ub0b4\ucda9\uaca9 \ub4f1\uae09\uc778 S5\ub97c \ub124 \uac00\uc9c0 \uc628\ub3c4\uc5d0\uc11c \uc774 \uacbd\ub85c\ub85c \ucc98\ub9ac\ud55c \uac83\uc785\ub2c8\ub2e4. \ud384\ub77c\uc774\ud2b8 \ubc94\uc704\uc778 650 °C\uc5d0\uc11c 4 h \uc720\uc9c0\ud558\uba74 23~24 HRC\uc758 \ud398\ub77c\uc774\ud2b8\uc640 \uc870\ub300 \ud384\ub77c\uc774\ud2b8\uac00 \uc0dd\uc131\ub418\uace0, \ub3d9\uc77c\ud55c \uac15\uc744 595 °C\uc5d0\uc11c 8 h \uc720\uc9c0\ud558\uba74 36 HRC\uc758 \ud398\ub77c\uc774\ud2b8\uc640 \ubbf8\uc138 \ud384\ub77c\uc774\ud2b8\uac00 \uc0dd\uc131\ub429\ub2c8\ub2e4. \ud384\ub77c\uc774\ud2b8 \ub178\uc988 \uc544\ub798\uc5d0\uc11c \uc0dd\uc131\ubb3c\uc740 \ubca0\uc774\ub098\uc774\ud2b8\uc774\uba70, 540 °C\uc5d0\uc11c\ub294 \ubcc0\ud0dc\uac00 \uc644\ub8cc\ub418\uae30 \uc804\uc5d0 \uc720\uc9c0\ub97c \uc911\ub2e8\ud55c \uc0c1\ubd80 \ubca0\uc774\ub098\uc774\ud2b8, 400 °C\uc5d0\uc11c\ub294 1 h\ub85c \ud558\ubd80 \ubca0\uc774\ub098\uc774\ud2b8\uac00 \uc0dd\uc131\ub418\uba70, \uc774\ub294 37~38 HRC\ub85c \ub458 \uc911 \ub354 \ub2e8\ub2e8\ud558\uace0 \uc778\uc131\uc774 \ub192\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

\ud574\ub2f9 \ub2e8\ub77d\uc758 \uc628\ub3c4\ub294 \ud56d\uc628\ubcc0\ud0dc\uc120\ub3c4\uc5d0\uc11c \ub098\uc628 \uac83\uc785\ub2c8\ub2e4. \uc544\ub798 \uc120\ub3c4\ub294 \uacf5\uc11d \ud0c4\uc18c\uac15\uc5d0 \ub300\ud55c \uac83\uc774\uc9c0\ub9cc, \uadf8 \ud615\ud0dc\ub294 \ubaa8\ub4e0 \uacf5\uad6c\uac15\uc774 \ub530\ub974\ub294 \ud615\ud0dc\uc785\ub2c8\ub2e4. \uc0c1\ubd80\uc5d0 \ud384\ub77c\uc774\ud2b8 \ub178\uc988, \uadf8 \uc544\ub798\uc5d0 \ubca0\uc774\ub098\uc774\ud2b8 \ubca0\uc774, \uadf8\ub9ac\uace0 \ud558\ubd80\uc5d0 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \uc2dc\uc791\uc120\uc774 \uc788\uc2b5\ub2c8\ub2e4. \uc774 \uc120\ub3c4\uc5d0\uc11c \uc720\uc9c0 \uc628\ub3c4\ub97c \uc77d\uc73c\uba74 \uc0dd\uc131 \uc870\uc9c1\uc774 \uacb0\uc815\ub429\ub2c8\ub2e4.<\/p>\n\n\n\n

\"Isothermal
\uadf8\ub9bc 3.13. \uacf5\uc11d \uc870\uc131\uac15\uc758 \ub4f1\uc628 \ubcc0\ud0dc(TTT) \uc120\ub3c4. \ub178\ub0c9, \uc6a9\uc735 \ub0a9 \uc695, 230 \u00b0C \uc5fc\uc695 \ub2f4\uae08\uc9c8\uc758 \uacbd\ub85c\uc640 \ubcc0\ud0dc \uc2dc\uc791\uc120\u00b7\uc885\ub8cc\uc120\uc774 \ud45c\uc2dc\ub418\uc5b4 \uc788\ub2e4. \ud384\ub77c\uc774\ud2b8 \ub178\uc988 \uc704\ucabd\uc5d0\uc11c\uc758 \uc720\uc9c0\ub294 \ud384\ub77c\uc774\ud2b8\ub97c \ub9cc\ub4e4\uace0, \uadf8 \uc544\ub798 \ubca0\uc774\uc5d0\uc11c\ub294 \uc704\ucabd\uc774 \uc0c1\ubd80 \ubca0\uc774\ub098\uc774\ud2b8, \uc544\ub798\ucabd\uc774 \ud558\ubd80 \ubca0\uc774\ub098\uc774\ud2b8\uac00 \ub41c\ub2e4. Ms \uc120 \uc544\ub798\uc5d0\uc11c\ub294 \uc720\uc9c0 \uc870\uac74\uacfc \ubb34\uad00\ud558\uac8c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\uac00 \ub41c\ub2e4. \uc704\uc758 S5 \uc0ac\uc9c4 \ub124 \uc7a5\uc740 \uc774 \uc120\ub3c4\uc758 \ud384\ub77c\uc774\ud2b8 \ubc0f \ubca0\uc774\ub098\uc774\ud2b8 \uc601\uc5ed\uc5d0\uc11c \uc720\uc9c0\ud55c \uacb0\uacfc\ub2e4. \uc608\uc2dc \uac15\uc740 \uacf5\uc11d \ud0c4\uc18c\uac15\uc774\uba70 \uacf5\uad6c\uac15\uc774 \uc544\ub2c8\ub2e4. \ucd9c\ucc98: A.V. Sverdlin and A.R. Ness, Fundamental Concepts in Steel Heat Treatment, in Steel Heat Treatment: Metallurgy and Technologies (G.E. Totten, ed.), CRC Press, 2006, Fig. 3.13.<\/figcaption><\/figure>\n\n\n\n
\n
\n
\"AISI
Fig. 75. S5\ub97c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654\ud558\uace0 650 °C\uc5d0\uc11c 4 h \ub4f1\uc628 \ubcc0\ud0dc\uc2dc\ud0a8 \ud6c4 \uacf5\ub7ad\ud558\uc5ec 23~24 HRC\uc758 \ud398\ub77c\uc774\ud2b8\uc640 \uc870\ub300 \ud384\ub77c\uc774\ud2b8 \ud615\uc131. 4% picral, 1000x.<\/figcaption><\/figure>\n<\/div>\n\n\n\n
\n
\"AISI
Fig. 76. S5\ub97c 595 °C\uc5d0\uc11c 8 h \ub4f1\uc628 \ubcc0\ud0dc\uc2dc\ud0a4\uace0 \uacf5\ub7ad\ud558\uc5ec 36 HRC\uc758 \ud398\ub77c\uc774\ud2b8\uc640 \ubbf8\uc138 \ud384\ub77c\uc774\ud2b8 \ud615\uc131. 4% picral, 1000x.<\/figcaption><\/figure>\n<\/div>\n\n<\/div>\n\n\n\n
\n
\n
\"AISI
Fig. 77. S5\ub97c 540 °C\uc5d0\uc11c 8 h \ubd80\ubd84 \ubcc0\ud0dc\uc2dc\ud0a8 \ud6c4 \uc218\ub0c9\ud558\uc5ec \uc5b4\ub450\uc6b4 \uc0c1\ubd80 \ubca0\uc774\ub098\uc774\ud2b8\uac00 \ud615\uc131\ub418\uace0 \ub098\uba38\uc9c0 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ub294 \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8\ub85c \ubcc0\ud0dc. 4% picral \ubc0f 2% nital, 1000x.<\/figcaption><\/figure>\n<\/div>\n\n\n\n
\n
\"AISI
Fig. 78. S5\ub97c 400 °C\uc5d0\uc11c 1 h \ub4f1\uc628 \ubcc0\ud0dc\uc2dc\ud0a4\uace0 \uacf5\ub7ad\ud558\uc5ec 37~38 HRC\uc758 \ud558\ubd80 \ubca0\uc774\ub098\uc774\ud2b8 \ud615\uc131. 4% picral \ubc0f 2% nital, 1000x.<\/figcaption><\/figure>\n<\/div>\n\n<\/div>\n\n\n\n

\uc774\ub7ec\ud55c \uc720\uc9c0\uc758 \uadfc\uac70\uac00 \ub418\ub294 \ubcc0\ud0dc \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc740 \ub2e4\uc74c\uc5d0 \uc788\uc2b5\ub2c8\ub2e4 \uacf5\uad6c\uac15 \ubbf8\uc138\uc870\uc9c1<\/a> S7 \ud398\uc774\uc9c0\uc5d0 \uc788\uc73c\uba70, \uc77c\ubc18 \ub2f4\uae08\uc9c8\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uc5f0\uc18d \ub0c9\uac01 \ub2e4\uc774\uc5b4\uadf8\ub7a8\ub3c4 \ud568\uaed8 \uc788\uc2b5\ub2c8\ub2e4. \uac01 \ub4f1\uae09\uc774 \ud15c\ud37c\ub9c1 \ud6c4 \uc720\uc9c0\ud558\ub294 \uacbd\ub3c4\ub294 \ub2e4\uc74c\uc5d0 \uc788\uc2b5\ub2c8\ub2e4 \ub2f4\uae08\uc9c8 \ucc28\ud2b8<\/a>.<\/p>\n\n\n\n

ASM Handbook, Volume 9, Metallography and Microstructures, George F. Vander Voort\uc758 Metallographic Techniques for Tool Steels, ASM International, 2004 (\ud15c\ud37c\ub9c1 \ubc0f \ub4f1\uc628 \ubcc0\ud0dc \uc139\uc158, Fig. 67 \ubc0f Fig. 69~Fig. 78)\uc5d0\uc11c \ud3b8\uc9d1. \ubaa8\ub4e0 \ucea1\uc158\uc740 \ud30c\uc77c\uc758 \uac80\uc0c9 \uac00\ub2a5\ud55c \ud14d\uc2a4\ud2b8 \ub808\uc774\uc5b4\uc5d0\uc11c \uc77d\uace0 \uc778\uc1c4\ub41c \uc0ac\uc9c4\uacfc \ub300\uc870\ud558\uc5ec \ud655\uc778\ud588\uc73c\uba70, \uac01 \uc0ac\uc9c4\uc740 \uc778\uc1c4\ub41c \ud53d\uc140 \ub108\ube44\uc758 1.5\ubc30\ub85c \ud30c\uc77c\uc5d0\uc11c \uc798\ub77c\ub0c8\uc2b5\ub2c8\ub2e4. \uc774 \uc0ac\uc9c4\ub4e4\uc740 Aobo Steel\uc758 \uc0ac\uc591\uc774 \uc544\ub2c8\ub77c \uacf5\uac1c\ub41c \uc2e4\ubb34\uc758 \ucc38\uace0 \uc694\uc57d\uc774\ubbc0\ub85c, \uacf5\uc815 \uc2dc\ud2b8\ub97c \uc791\uc131\ud558\uae30 \uc804\uc5d0 \uc7ac\ub8cc \uc2dc\ud5d8 \uc131\uc801\uc11c\uc640 \ub300\uc870\ud558\uc5ec \ud15c\ud37c\ub9c1 \uc77c\uc815\uacfc \uacbd\ub3c4 \uc704\uce58\ub97c \ud655\uc778\ud558\uc2ed\uc2dc\uc624.<\/p>","protected":false},"excerpt":{"rendered":"

Tool Steel Tempering and Isothermal Transformation Two different temperature holds decide what a tool steel ends up as, and the micrographs below show both. The first is the temper that follows the quench, where the temperature and the number of tempers fix the hardness, the carbide type and how much retained austenite is left. The […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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Steel Tempering and Isothermal Transformation Two different temperature holds decide what a tool steel ends up as, and the micrographs below show both. The first is the temper that follows the quench, where the temperature and the number of tempers fix the hardness, the carbide type and how much retained austenite is left. The…","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/ko\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"Tool Steel Tempering and Isothermal Transformation Two different temperature holds decide what a tool steel ends up as, and the micrographs below show both. The first is the temper that follows the quench, where the temperature and the number of tempers fix the hardness, the carbide type and how much retained austenite is left. The…","_links":{"self":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/20699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/comments?post=20699"}],"version-history":[{"count":8,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/20699\/revisions"}],"predecessor-version":[{"id":22595,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/20699\/revisions\/22595"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/media?parent=20699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}