Strain Hardening Behavior of High Performance FBDP, TRIP and TWIP Steels

被引：23

作者：

Cai, Ming-hui ^{[2
]}

Ding, Hua ^{[1
]}

Tang, Zheng-you ^{[1
]}

Lee, Hua-ying ^{[1
]}

Lee, Young-kook ^{[2
]}

机构：

[1] Northeastern Univ, Sch Met & Mat, Shenyang 110004, Peoples R China

[2] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

来源：

STEEL RESEARCH INTERNATIONAL | 2011年 / 82卷 / 03期

关键词：

Ferrite-bainite dual phase (FBDP) steel; transformation-induced plasticity (TRIP) steel; twin-induced plasticity (TWIP) steel; instantaneous n value; strain hardening rate; MULTIPHASE STEELS; TENSILE BEHAVIOR; MICROSTRUCTURE;

D O I：

10.1002/srin.201000132

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Based on n-value differential equation and microstructural observation, strain hardening behaviors of FBDP, TRIP, and TWIP steels during uniaxial tension were investigated. TRIP steel exhibits both superior strength and ductility than FBDP steel, and TWIP steel displays much higher total and uniform elongations in comparison to FBDP and TRIP steels. The instantaneous n values of FBDP and TRIP steels increase at small strains, reach a maximum value, smoothly decrease at higher strains, and then rapidly drop up to the specimen rupture. The strain hardening of TRIP steel persists at higher strains where that of FBDP steel begins to diminish. TWIP steel exhibits gradually increased instantaneous n values over the whole uniform plastic deformation, implying that TWIP steel shows a much larger strain hardening capability than FBDP and TRIP steels.

引用

页码：242 / 248

页数：7

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