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| STUDY ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HOT ROLLIED C-Mn-Si-(Al) TRIP STEELS BASED ON DYNAMIC TRANSFORMATION OF UNDERCOOLED AUSTENITE |
| ;;LI Longfei;; |
| 北京科技大学 |
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Cite this article:
LI Longfei. STUDY ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HOT ROLLIED C-Mn-Si-(Al) TRIP STEELS BASED ON DYNAMIC TRANSFORMATION OF UNDERCOOLED AUSTENITE. Acta Metall Sin, 2008, 44(11): 1299-1304 .
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Abstract Abstract: The microstructure and mechanical properties of hot rolled C-Mn-Si and C-Mn-Al-Si TRIP(transformation induced plasticity) steels based on dynamic transformation of undercooled austenite (DTUA) were investigated by uniaxial hot compression tests on a Gleeble1500 simulation test machine. The results showed that in the multiphase microstructure of investigated steels, the grain size of ferrite was fine, the bainite packets was small and had chaotic orientations, the retained austenite distributed uniformly and had high volume fraction duo to the DTUA. Moreover in the microstructure, lots of grain boundaries of ferrite and bainitic ferrite, high density of desolation in bainitic ferrite and a high amount of granular retained austenite located among/between ferrites resulted in the steels having excellent mechanical properties, which was characterized by a combination of continuous yielding, high strength (～890MPa for C-Mn-Si steel and 760MPa for C-Mn-Al-Si steel) and high elongation(26% and 32% respectively )as well as low yield ratio.
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Received: 17 June 2008
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[1]Yin Y Y,Yang W Y,Li L F,Sun Z Q,Wang X T.Acta Metall Sin,2008;44:686 (尹云洋，杨王玥，李龙飞，孙祖庆，王西涛．金属学报，2008；44，686)
[2]Li J C,Yin Y Y,Li L F,Yang W Y,Sun Z Q.J Iron Steel Res,accepted (李建成，尹云洋，李龙飞，杨王明，孙祖庆．钢铁研究学报，待发表)
[3]Yin Y Y,Yang W Y,Li L F,Sun Z Q,Wang X T.Acta Metall Sin,2008;44:1292 (尹云洋，杨王明，李龙飞，孙祖庆，王西涛．金属学报，2008；44：1292)
[4]Hanzaki A Z,Hodgson P D,Yue S.ISIJ Int,1995;35:324
[5]Koh H J,Lee S K,Park S H,Choi S J,Kwon S J,Kim N J.Scr Mater,1998;38:763
[6]Sun Z Q,Yang W Y,Qi J J,Hu A M.Mater Sci Eng, 2002;A334:201
[7]Sachdev A K.Acta Metall,1983;31:2037
[8]Tosal-Martinez L,Vanderschueren D,Jacobs S,Van- deputte S.Steel Res,2001;72:412
[9]Timokhina I B,Hodgson P D,Pereloma E V.Metall Mater Trans,2003;34A:1599
[10]Yang W Y,Qi J J,Sun Z Q,Yang P.Acta Metall Sin, 2004;40:135 (杨王明，齐俊杰，孙祖庆，杨平．金属学报，2004；40：135)
[11]Evans P J,Grawford L K,Jones A.Ironmaking Steelmak- ing,1997;24:361
[12]Koh-Ichi S,Jyunya S,Tsutomu I,Takahiro K.ISIJ Int, 2000;40:920
[13]Traint S,Pichler A,Hauzenberger K,Stiaszny P,Werner E.Steel Res,2002;73:259
[14]Shunichi H,Shushi I,Koh-Ichi S,Syugo M.ISIJ Int,2004; 44:1590
[15]Hanzaki A Z,Hodgson P D,Yue S.Metall Mater Trans, 1997;28A:2405
[16]Langford F,Cohen M.Trans ASM,1969;62:623
[17]Pereloma E V,Timokhina I B,Miller M K,Hodgson P D. Acta Mater,2007;55:2587
[18]Timokhina I B,Hodgson P D,Pereloma E V.Metall Mater Trans,2004;35A:2331
[19]Tomota Y,Tokuda H,Adachi Y,Wakita M,Minakawa N, Moriai A,Morii Y.Acta Mater,2004;52:5737
[20]Jacques P J,Petein A,Harlet P.In:de Cooman B C,ed., Int conf on TRIP-Aided High Strength Ferrous Alloys. Aachen:Wissenschafts Verlag Mainz Gmbh,2001:281
[21]Goel N C,Sangal S,Tangri K.Metall Trans,1985;16A: 2013 |
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