Prediction of post-dynamic austenite-to-ferrite transformation and reverse transformation in a low-carbon steel by cellular automaton modeling

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	Prediction of post-dynamic austenite-to-ferrite transformation and reverse transformation in a low-carbon steel by cellular automaton modeling
	C. W. Zheng; D. Raabe; D. Z. Li
	2012
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	60 期号:12 页码:4768-4779
摘要	The post-dynamic transformation that takes place during the subsequent isothermal holding for the case when dynamic strain-induced transformation (DSIT) from austenite to ferrite occurs during hot deformation is investigated by cellular automaton modeling. The simulation provides a better understanding of carbon diffusion in retained austenite and the resulting microstructure evolution during the post-dynamic transformation. The predictions reveal that continuing transformation from retained austenite to ferrite and the reverse transformation can occur simultaneously in the same microstructure during post-deformation isothermal holding owing to the locally acting chemical equilibrium conditions. Competition between forward and reverse transformation exists during the early stage of post-dynamic heat treatment. It is also revealed that increasing the final strain of DSIT might promote the reverse transformation, whereas the continuous austenite-to-ferrite transformation yields a diminishing effect. The influence of the DSIT final strain on the grain size of ferrite and the characteristics of the resultant microstructure is also discussed. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[zheng, chengwu; raabe, dierk] max planck inst eisenforsch gmbh, d-40237 dusseldorf, germany. [li, dianzhong] chinese acad sci, inst met res, shenyang 110016, peoples r china.;raabe, d (reprint author), max planck inst eisenforsch gmbh, max planck str 1, d-40237 dusseldorf, germany.;raabe@mpie.de
关键词	Strain-induced Transformation Post-dynamic Transformation Cellular Automaton Modeling Low-carbon Steel Strain-induced Transformation Deformation-induced Ferrite Ultrafine-grained Steels C-mn Steel Phase-transformation Mechanical-properties Microalloyed Steel Microstructure Simulation Alloys
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60497
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	C. W. Zheng,D. Raabe,D. Z. Li. Prediction of post-dynamic austenite-to-ferrite transformation and reverse transformation in a low-carbon steel by cellular automaton modeling[J]. Acta Materialia,2012,60(12):4768-4779.
APA	C. W. Zheng,D. Raabe,&D. Z. Li.(2012).Prediction of post-dynamic austenite-to-ferrite transformation and reverse transformation in a low-carbon steel by cellular automaton modeling.Acta Materialia,60(12),4768-4779.
MLA	C. W. Zheng,et al."Prediction of post-dynamic austenite-to-ferrite transformation and reverse transformation in a low-carbon steel by cellular automaton modeling".Acta Materialia 60.12(2012):4768-4779.