Formation of a blocky ferrite in Fe-Cr-Ni alloy during directional solidification

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	Formation of a blocky ferrite in Fe-Cr-Ni alloy during directional solidification
	J. W. Fu; Y. S. Yang; J. J. Guo
	2009
发表期刊	Journal of Crystal Growth
ISSN	0022-0248
卷号	311 期号:14 页码:3661-3666
摘要	Formation and evolution details of a blocky microstructure in AISI 304 stainless steel are studied by quenching method during directional solidification. Results show that a Coupled growth microstructure, consisting of lathy ferrite and austenite, forms first from the melt. At solid-state transformation stage, most lathy ferrite disappears due to the phase transformation from ferrite to austenite. With further decreasing of the temperature, plenty of fine ferrite colonies occur in the original austenite region. The formation of the blocky ferrite indicates that reverse solid-state transformation from austenite to ferrite takes place. This transformation is due to the segregation and the instability of austenite during the growth of austenite under low cooling rate. The fine ferrite colonies transform into blocky ferrite at room temperature. TEM and EDS analyses were carried out to identify the phases and determine the phase composition, respectively. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[fu, j. w.; yang, y. s.] 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, shenyang 110016, peoples r china;ysyang@imr.ac.cn
关键词	Blocky Ferrite Directional Solidification Solid-state Transformation Fe-cr-ni Alloy Austenitic Stainless-steel Microstructure Evolution Rapid Solidification Phase-formation Delta-ferrite Welds Sequence
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WOS记录号	WOS:000268652400022
引用统计	被引频次：33[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/321006/31908
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. Formation of a blocky ferrite in Fe-Cr-Ni alloy during directional solidification[J]. Journal of Crystal Growth,2009,311(14):3661-3666.
APA	J. W. Fu,Y. S. Yang,&J. J. Guo.(2009).Formation of a blocky ferrite in Fe-Cr-Ni alloy during directional solidification.Journal of Crystal Growth,311(14),3661-3666.
MLA	J. W. Fu,et al."Formation of a blocky ferrite in Fe-Cr-Ni alloy during directional solidification".Journal of Crystal Growth 311.14(2009):3661-3666.