Modeling of Microstructure Evolution with Dynamic Recrystallization in Finite Element Simulations of Martensitic Steel

被引：11

作者：

Baron, Thomas Josef ^{[1
]}

Khlopkov, Kirill ^{[1
]}

Pretorius, Thomas ^{[1
]}

Balzani, Daniel ^{[2
]}

Brands, Dominik ^{[3
]}

Schroeder, Joerg ^{[3
]}

机构：

[1] ThyssenKrupp Steel Europe AG, Modelling & Simulat Technol & Innovat, Kaiser Wilhelm Str 100, D-47166 Duisburg, Germany

[2] Tech Univ Dresden, Insitute Mech & Shell Struct, Nurnberger Str 31A, D-01187 Dresden, Germany

[3] Univ Duisburg Essen, Fac Engn Sci, Inst Mech, Univ Str 15, D-45177 Essen, Germany

来源：

STEEL RESEARCH INTERNATIONAL | 2016年 / 87卷 / 01期

关键词：

martensitic steel; hot forming; dynamic recrystallization; material model; microstructure evolution; grain size effects; HIGH-TEMPERATURE DEFORMATION; FLOW-STRESS; AUSTENITE; PREDICTION; KINETICS; STRAIN; STRIP;

D O I：

10.1002/srin.201400576

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A metallurgical material description of the flow behavior for finite element (FE) simulations was developed. During hot compression tests, the dynamic microstructure evolution is modeled on the example of high-strength martensitic steel MS-W 1200. Compression tests at 900-1000 degrees C with a strain rate of 0.1 s(-1) on fine-grain and coarse-grain samples were performed. An analysis of the flow behavior identified a strong correlation between the dynamic recrystallization kinetics and the initial microstructure. The regression analysis has been used to determine correction factors of the new model to describe the dynamic recrystallization. A good agreement between FE simulation and measurement shows the validity of the new model.

引用

页码：37 / 45

页数：9

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