Modeling the Flow Behavior of a High-Manganese Steel Fe-Mn23-C0.6 in Consideration of Dynamic Recrystallization

被引：20
|
作者：
Xiong, W. [1 ]
Wietbrock, B. [1 ]
Saeed-Akbari, A. [2 ]
Bambach, M. [1 ]
Hirt, G. [1 ]
机构：
[1] Rhein Westfal TH Aachen, Inst Met Forming, Aachen, Germany
[2] Rhein Westfal TH Aachen, Inst Ferrous Technol, Aachen, Germany
来源：
STEEL RESEARCH INTERNATIONAL | 2011年 / 82卷 / 02期
关键词：
TWIP steel; high-manganese austenitic steel; dynamic recrystallization; hot deformation; HIGH-TEMPERATURE DEFORMATION; TWIP STEELS; HOT DEFORMATION; MICROSTRUCTURE; ALLOYS; MECHANISMS; SIMULATION; PREDICTION; INITIATION; AUSTENITE;
D O I：
10.1002/srin.201000263
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In this paper, the hot deformation behavior of a high manganese (23wt. % Mn and 0.6wt. % C) austenitic steel is analyzed. This steel is a ternary Fe-Mn-C alloy that shows twinning induced plasticity (TWIP). Since strip production involves hot rolling, the hot deformation behavior of this steel is analyzed and modeled by a phenomenological material model. The model takes into account strain hardening and softening by dynamic recrystallization (DRX), which is modeled using Avrami type kinetics. The evolution of grain size during DRX is also taken into account. Hot compression tests were performed in a temperature range of 900 to 1200 degrees C and various strain rates from 0.1 s(-1) to 10 s(-1) to identify the model parameters. The material model was coupled with a finite element code and validated using selected parameter combinations of the compression tests that were not used for parameter identification.
引用
收藏
页码：127 / 136
页数：10
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