Numerical simulation of dynamic strain-induced austenite-ferrite transformation in a low carbon steel
Numerical simulation of dynamic strain-induced austenite-ferrite transformation in a low carbon steel
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低碳钢动态应变诱发奥氏体-铁素体转变的数值模拟
DOI：
10.1016/j.actamat.2009.03.005
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发表时间：
2009-06
期刊：
影响因子：
9.4
通讯作者：
Zheng, Chengwu
中科院分区：
文献类型：
--
作者：
Xiao, Namin;Li, Dianzhong;Li, Yiyi;Hao, Luhan;Zheng, Chengwu
采用改进的元胞自动机模型研究了低碳钢中奥氏体（γ）向铁素体（α）的动态应变诱导相变（DSIT）。该模型同时模拟了γ-α相变、铁素体动态再结晶和热变形过程。模拟提供了一个深入了解的机制，铁素体细化在DSIT。结果表明，DSIT细化铁素体晶粒是“不饱和”形核、有限铁素体长大和铁素体动态再结晶增加铁素体形核密度的结果。还讨论了原奥氏体晶粒尺寸和应变速率对DSIT铁素体组织演变的影响以及所得组织的特征。
A modified cellular automaton modeling has been performed to investigate the dynamic strain-induced transformation (DSIT) from austenite (γ) to ferrite (α) in a low carbon steel. In this modeling, the γ–α transformation, ferrite dynamic recrystallization and the hot deformation were simulated simultaneously. The simulation provides an insight into the mechanism of the ferrite refinement during the DSIT. It is found that the refinement of ferrite grains derived from DSIT was the result of the increasing ferrite nuclei density by the “unsaturated” nucleation, the limited ferrite growth and the ferrite dynamic recrystallization. The effects of prior austenite grain size and strain rate on the microstructural evolution of the DSIT ferrite and the characteristics of the resultant microstructure are also discussed.
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影响因子：
9.4
作者：
S. Choi
通讯作者：
S. Choi
影响因子：
9.4
作者：
Kumar, M;Sasikumar, R;Nair, PK
通讯作者：
Nair, PK
DOI：
10.1016/0956-7151(94)90056-6
发表时间：
1994
期刊：
Acta Metallurgica Et Materialia
影响因子：
--
作者：
M. Militzer;W. Sun;J. Jonas
通讯作者：
M. Militzer;W. Sun;J. Jonas
DOI：
10.1007/s11661-002-0283-2
发表时间：
2002-09
期刊：
Metallurgical and Materials Transactions A
影响因子：
--
作者：
P. Hurley;B. C. Muddle;P. Hodgson
通讯作者：
P. Hurley;B. C. Muddle;P. Hodgson
影响因子：
9.4
作者：
Xiao, NM;Tong, MM;Li, YY
通讯作者：
Li, YY