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| Effect of Thermomechanical Processing on Microstructures of TRIP Steel |
| TANG Zheng��you1,2,DING Hua1,2,DU Lin��xiu2,DING Hao1,ZHANG Xin1 |
| 1. College of Materials and Metallurgy, Northeastern University, Shenyang 110004, Liaoning, China;2. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China |
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Abstract In order to control retained austenite, the effect of hot deformation in the intercritical region on the microstructure of hot��rolled transformation��induced plasticity (TRIP) steel was studied on a Gleeble 1500 hot simulator. Compressive strains varying in amounts from 0 to 60% were imposed in the intercritical region, and effects on the formation of polygonal ferrite, carbide��free bainite and retained austenite were determined. With increasing the hot deformation amount and the ferrite content and decreasing the carbide��free bainite content, the volume fraction of retained austenite decreases. Increased dislocation density, grain refinement of ferrite and carbon enrichment are the main factors which control retained austenite stability.
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Received: 01 January 1900
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| [1] |
Xiao-li Zhao,,Yong-jian Zhang,Cheng-wei Shao,Wei-jun Hui,Han Dong. Thermal stability of retained austenite and mechanical properties of medium-Mn steel during tempering treatment[J]. Chinese Journal of Iron and Steel, 2017, 24(8): 830-837. |
| [2] |
Zhao-xia Shi,,*,Xiao-feng Yan,Chun-hua Duan,Jin-gui Song,Ming-han Zhao,Jue Wang. Hot deformation behavior of GH4945 superalloy using constitutive equation and processing map[J]. Chinese Journal of Iron and Steel, 2017, 24(6): 625-633. |
| [3] |
Da-shan Sui,*,Hai-ming Zhang,Hong-yang Zhu,Zhe Zhu,Zhen-shan Cui. Effects of process parameters on fragment and refinement of millimeter-grade coarse grains for 316LN steel during hot cogging[J]. Chinese Journal of Iron and Steel, 2017, 24(5): 529-535. |
| [4] |
Hui Guo,Peng Zhou,*,Ai-min Zhao,,Chao Zhi,Ran Ding,Jia-xing Wang. Effects of Mn and Cr contents on microstructures and mechanical properties of low temperature bainitic steel[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 290-295. |
| [5] |
Ji-bo Peng,,Hu Jiang,,Gong-ting Zhang,Li-ben Chen,,Na-qiong Zhu,,Yan-lin He,,*, Xiao-gang Lu,,Lin Li,. In-situ analysis of retained austenite transformation in high-performance micro-alloyed TRIP steel[J]. Chinese Journal of Iron and Steel, 2017, 24(3): 313-320. |
| [6] |
Peng Zhou,,Qing-xian Ma,,*. Static recrystallization behavior of 25CrMo4 mirror plate steel during two-pass hot deformation[J]. Chinese Journal of Iron and Steel, 2017, 24(2): 222-228. |
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2007, Vol. 14 
