Effect of Cooling Paths on Microstructure and Mechanical Properties of Vanadium Bearing Microalloyed Steel

被引：4

作者：

Chen, Jun ^{[1
]}

Chen, Xiangwei ^{[1
]}

Tang, Shuai ^{[1
]}

Liu, Zhenyu ^{[1
]}

Wang, Guodong ^{[1
]}

机构：

[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China

来源：

MATERIALS PERFORMANCE, MODELING AND SIMULATION | 2013年 / 749卷

关键词：

V-bearing microalloyed steel; Ultra fast cooling; Cooling path; Microstructure; Mechanical properties;

D O I：

10.4028/www.scientific.net/MSF.749.243

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Based on ultra fast cooling, effects of cooling paths on microstructure and mechanical properties of vanadium bearing microalloyed steel were investigated by the observation of optical microscope and scanning electron microscope and the testing of mechanical properties, moreover, the work-hardening exponent was determined based on stress-strain curves. The results show that using ultra fast cooling can effectively refine ferrite grain size and the ferrite grain size is decreased as the final temperature of ultra fast cooling is decreased. In addition, the microstructure and mechanical properties can be controlled by cooling paths. The ferrite-perlite microstructure with lower strength and higher n-value of approx. 0.2 and the ferrite-bainite microstructure with higher strength and lower n-value of approx. 0.16 can be gained at the higher and lower final temperature of ultra fast cooling, respectively. And the yield ratio are all lower than 0.85.

引用

页码：243 / 249

页数：7

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