Strain Hardening and Strain Rate Sensitivity Behaviors of Advanced High Strength Steels

被引：0
|
作者：
F. Ozturk
A. Polat
S. Toros
R. C. Picu
机构：
[1] Nigde University,Department of Mechanical Engineering
[2] Rensselaer Polytechnic Institute,Department of Mechanical, Aerospace and Nuclear Engineering
来源：
Journal of Iron and Steel Research International | 2013年 / 20卷
关键词：
steel; advanced high strength steel; HSLA; DP; TRIP; hardening;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The mechanical properties of commercial dual phase (DP), transformation induced plasticity (TRIP), and high strength low alloy (HSLA-340) steel sheets are investigated and compared at various strain rates ranging from 0.0017 to 0.17 s−1 at ambient temperature. TRIP steel outperforms the other two materials, having comparable ductility and twice as large strength relative to DP steel. TRIP has larger strength and much larger ductility than HSLA-340. The exceuent ductility of TRIP800 is due to its high strain hardening capability, which promotes stable plastic deformation. It is observed that the strain hardening rate in TRIP800 does not decrease to zero at failure, as common in most materials in which failure is preceded by necking.
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页码：68 / 74
页数：6
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