Formation of a two-phase microstructure in Fe-Cr-Ni alloy during directional solidification

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	Formation of a two-phase microstructure in Fe-Cr-Ni alloy during directional solidification
	J. W. Fu; Y. S. Yang; J. J. Guo; J. C. Ma; W. H. Tong
	2008
发表期刊	Journal of Crystal Growth
ISSN	0022-0248
卷号	311 期号:1 页码:132-136
摘要	The formation and evolution of a two-phase coupled growth microstructure in AISI 304 stainless steel are investigated using a quenching method during directional solidification. It is found that the two-phase microstructure, which is composed of coupled growth of thin lathy delta ferrite (h) and austenite (gamma), forms from the melt first during solidification. As solidification proceeds, the retained liquid transforms into austenite directly. On cooling, the subsequent incomplete solid-state transformation from ferrite to austenite results in the disappearance of the thinner lathy delta ferrite, and the final two-phase coupled growth microstructure is formed. The formation mechanism of the two-phase coupled growth microstructure is analyzed theoretically based on the nucleation and constitutional under-cooling (NCU) criterion. Transmission electron microscope (TEM) and EDS analyses were carried out to identify the pleases and determine the phase composition, respectively. (C) 2008 Elsevier B.V. All rights reserved.
部门归属	[fu, j. w.; yang, y. s.; ma, j. c.; tong, w. h.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [fu, j. w.; guo, j. j.] harbin inst technol, sch mat sci & engn, harbin 150001, peoples r china.;yang, ys (reprint author), chinese acad sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;ysyang@imr.ac.cn
关键词	Directional Solidification Microstructure Fe-cr-ni Alloy Stainless-steel Welds Aisi 304-stainless-steel Rapid Solidification Delta-ferrite Evolution
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WOS记录号	WOS:000262796500026
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32763
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. W. Fu,Y. S. Yang,J. J. Guo,et al. Formation of a two-phase microstructure in Fe-Cr-Ni alloy during directional solidification[J]. Journal of Crystal Growth,2008,311(1):132-136.
APA	J. W. Fu,Y. S. Yang,J. J. Guo,J. C. Ma,&W. H. Tong.(2008).Formation of a two-phase microstructure in Fe-Cr-Ni alloy during directional solidification.Journal of Crystal Growth,311(1),132-136.
MLA	J. W. Fu,et al."Formation of a two-phase microstructure in Fe-Cr-Ni alloy during directional solidification".Journal of Crystal Growth 311.1(2008):132-136.