Microstructure evolution in AISI 304 stainless steel during near rapid directional solidification

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	Microstructure evolution in AISI 304 stainless steel during near rapid directional solidification
	J. W. Fu ; Y. S. Yang ; J. J. Guo ; J. C. Ma ; W. H. Tong
刊名	Materials Science and Technology
	2009
卷号	25 期号:8 页码:1013-1016
关键词	Stainless steel Microstructure evolution Directional solidification austenitic stainless-steel phase-formation cooling rate welds selection alloys
ISSN号	0267-0836
中文摘要	The microstructure evolution of near rapidly directionally solidified AISI 304 stainless steel was investigated in the present paper. It is found that the microstructure consists of delta ferrite dendrites with developed sidebranches and interdendritic austenite (gamma) under the temperature gradient (G) of 20 K mm 21 and growth rate (V) of 1.0 mm s(-1). Coupled growth microstructures of thin lamellar ferrite and austenite begin to form at a higher growth rate of 2.0 mm s(-1). The formation mechanism of the coupled microstructures is analysed based on the nucleation and constitutional undercooling criterion that the gamma ferrite phase and austenite phase form alternately before the steady state growth of each phase is reached due to larger undercooling. With further increase of the growth rate up to 3.0 mm s(-1), the morphology of the d ferrite transforms from lathy to cellular.
原文出处	://WOS:000269019800012
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31909]
专题	金属研究所_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. Microstructure evolution in AISI 304 stainless steel during near rapid directional solidification[J]. Materials Science and Technology,2009,25(8):1013-1016.
APA	J. W. Fu,Y. S. Yang,J. J. Guo,J. C. Ma,&W. H. Tong.(2009).Microstructure evolution in AISI 304 stainless steel during near rapid directional solidification.Materials Science and Technology,25(8),1013-1016.
MLA	J. W. Fu,et al."Microstructure evolution in AISI 304 stainless steel during near rapid directional solidification".Materials Science and Technology 25.8(2009):1013-1016.