Influence of carbon on thermal deformation behaviour and deformation/diffusion mechanism of V-microalloyed steel by physical constitutive analysis

被引：0
作者：
Wei, Hai-lian [1 ,2 ,3 ]
Li, Shuai [2 ]
Deng, Xiao-ju [2 ]
Zhou, Zhi-you [2 ]
Chen, Shuang-shuang [2 ]
Pan, Hong-bo [4 ]
机构：
[1] Anhui Univ Technol, Key Lab Green Fabricat & Surface Technol Adv Met M, Minist Educ, Maanshan, Anhui, Peoples R China
[2] Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan, Anhui, Peoples R China
[3] Anhui Univ Technol, Anhui Key Lab Met Mat & Proc, Maanshan, Anhui, Peoples R China
[4] Anhui Univ Technol, Key Lab Met Emiss Reduct & Resources Recycling, Minist Educ, Maanshan 243002, Anhui, Peoples R China
来源：
IRONMAKING & STEELMAKING | 2024年 / 51卷 / 01期
基金：
中国国家自然科学基金; 安徽省自然科学基金;
关键词：
V-microalloyed steel; hot compression; influence of carbon; physical constitutive model; deformation/diffusion mechanism; HOT DEFORMATION; FLOW BEHAVIOR; DYNAMIC RECRYSTALLIZATION; MICROSTRUCTURAL EVOLUTION; ALUMINUM-ALLOY; PLASTIC-FLOW; WORKING; RESTORATION; AUSTENITE; PARAMETER;
D O I：
10.1177/03019233231214097
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Hot compression tests of low carbon (0.055C) and medium carbon (0.37C) V-microalloyed steels were carried out in the temperature of 900 similar to 1100 C degrees and strain rate of 0.005 similar to 10 s(-1). The influence of carbon on thermal deformation behaviour and deformation/diffusion mechanism of V-microalloyed steel was studied by three physical constitutive models based on creep theory. It is found that the increase of carbon content has softening effect at low strain rate, but hardening effect at high strain rate. Different carbon content may lead to changes in deformation/diffusion mechanism of V-microalloyed steel. The deformation mechanism of 0.37C steel is dislocation climb, while other deformation mechanism may appear in 0.055C steel. The diffusion mechanism of 0.055C steel is mainly lattice diffusion, while that of 0.37C steel is a synergistic mechanism of lattice diffusion and grain boundary diffusion. The accuracy analysis of the models is consistent with the inferred results of deformation/diffusion mechanism.
引用
收藏
页码：90 / 103
页数：14
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