Flow Stress Behavior of the Normalized and Tempered As-cast 42CrMo Steel during Hot Deformation

被引：4

作者：

Qi, Huiping ^{[1
]}

Li, Yongtang ^{[1
]}

Fu, Jia ^{[1
]}

Liu, Zhiqi ^{[2
]}

机构：

[1] Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan, Peoples R China

[2] Taiyuan Univ Sci & Technol, Sch Mechinery Elect & Engn, Taiyuan, Peoples R China

来源：

ADVANCED MANUFACTURING TECHNOLOGY, PTS 1-3 | 2011年 / 314-316卷

基金：

中国国家自然科学基金;

关键词：

as-cast 42CrMo steel; hot compression deformation; true stress-strain curves; work hardening; softening mechanism;

D O I：

10.4028/www.scientific.net/AMR.314-316.2560

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The purpose of this study is to find the hot deformation behavior of as-cast 42CrMo steel. The thermal simulation experiments of as-cast 42CrMo steel were done on the Gleeble-1500 thermo-mechanical simulation machine. The hot deformation behavior of as-cast 42CrMo steel was analyzed. The true stress-strain curves in hot deformation at different deformation temperature (850 degrees C,950 degrees C,1050 degrees C,1150 degrees C), different strain rate (0.05S(-1), 0.5 S-1, 1 S-1,5 S-1) were obtained. The influence rules of the deformation temperature and strain rate on the curves were analyzed. The analysis shows that the true stress increases with increase of deformation temperature and decrease of stain rate. The hot deformation behavior of as-cast 42CrMo steel was compared with forged 42CrMo steel. The results show that the flow stress of as-cast 42CrMo steel during hot deformation was higher than that of the forged 42CrMo steel. Compared to the forged 42CrMo steel, the dynamic recrystallization in as-cast 42CrMo steel during hot deformation is more difficult to occur. The above conclusions have significant theoretical and practical meanings for the design of hot deformation process of as-cast 42CrMo steel.

引用

页码：2560 / +

页数：2

共 5 条

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[2] [蔺永诚 LIN Yong-cheng], 2009, [材料热处理学报, Transactions of Materials and Heat Treatment], V30, P70
[3] Lin Yong-cheng, 2008, Journal of Central South University (Science and Technology), V39, P1005
[4] Modeling of flow stress of 42CrMo steel under hot compression
Lin, Yong-Cheng
Chen, Ming-Song
Zhang, Jun
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2009, 499 (1-2): : 88 - 92
[5] Lin Yong-cheng, 2008, Journal of Central South University (Science and Technology), V39, P549

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