Constitutive Analysis of Dynamic Recrystallization and Flow Behavior of a Medium Carbon Nb-V Microalloyed Steel

被引：21

作者：

Shen, Wen-fei ^{[1
]}

Zhang, Li-wen ^{[1
]}

Zhang, Chi ^{[1
]}

Xu, Yi-feng ^{[2
]}

Shi, Xin-hua ^{[2
]}

机构：

[1] Dalian Univ Technol, Sch Mat Sci & Engn, 2 Ling Gong Rd, Dalian 116023, Peoples R China

[2] Suxin Special Steel Grp Co Ltd, High Tech Ind Dev Zone, 28 Gang Cheng Rd, Suzhou 215151, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2016年 / 25卷 / 05期

关键词：

constitutive equation; dynamic recrystallization; flow stress; hot deformation; medium carbon Nb-V microalloyed steel; HOT DEFORMATION; HIGH-TEMPERATURE; STAINLESS-STEEL; INITIAL MICROSTRUCTURE; SOFTENING BEHAVIOR; 42CRMO STEEL; STRAIN-RATE; STRESS; MODEL; ALLOY;

D O I：

10.1007/s11665-016-2026-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The dynamic recrystallization (DRX) and flow behavior of a medium carbon Nb-V microalloyed steel was investigated using hot isothermal compression experiments in a wide range of temperatures (1123-1473 K) and strain rates (0.01-10 s(-1)). The flow stress curves were analyzed comprehensively, and it was found that the flow stress of this steel is higher than C-Mn steel and V microalloyed steel. All the curves obtained can be ranged into three principal types: work hardening, dynamic recovery, and DRX. The DRX behavior of this steel was investigated, including critical strain, kinetics of DRX, and microstructure. The constitutive equation to predict the flow stress of the tested steel was also developed, and the analysis result indicates that the developed model has a high accuracy in predicting the flow stress during hot deformation.

引用

页码：2065 / 2073

页数：9

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