PHASE-ANALYSIS OF A LASERGLAZED RENEN4 SUPERALLOY

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	PHASE-ANALYSIS OF A LASERGLAZED RENEN4 SUPERALLOY
	X. H. Yu ; J. H. Zhang ; Z. Q. Hu ; Y. X. Zhu ; B. Y. Tong ; Y. Liang
刊名	Materials Transactions Jim
	1993
卷号	34 期号:8 页码:669-674
关键词	phase analysis rapid solidification single-crystal superalloy solidification
ISSN号	0916-1821
中文摘要	It is the first time that the phases in laserglazed single crystal nickel-base superalloy Rene'N4 have been studied systematically. The results show that there are three kinds of carbides and finely dispersed gamma' phase, as well as the gamma/gamma' eutectic in the microstructure, and the carbides are f.c.c TiC, TaC and hexagonal WC. These carbides and gamma/gamma' eutectic are distributed in the interdendritic regions. The cooling rate strongly affects not only the morphology of TiC but also the morphology and size of the gamma' phase. The morphology of TiC changes from the as-cast blocky form to dendritic and finally to a well-branched chrysanthemum-like form as the cooling rate is increased. At the same time, the size of gamma' becomes smaller and the morphology of gamma' changes from cubic to rounded-cubic. After rapid solidification, the as-cast well-developed mushroom-like gamma/gamma' eutectic alters into featherlike. The existence of gamma' and gamma/gamma' eutectic indicates that their precipitation rates are too large to be able to suppress their precipitations under a rapid solidification condition.
原文出处	://WOS:A1993LX45800005
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/39167]
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	X. H. Yu,J. H. Zhang,Z. Q. Hu,et al. PHASE-ANALYSIS OF A LASERGLAZED RENEN4 SUPERALLOY[J]. Materials Transactions Jim,1993,34(8):669-674.
APA	X. H. Yu,J. H. Zhang,Z. Q. Hu,Y. X. Zhu,B. Y. Tong,&Y. Liang.(1993).PHASE-ANALYSIS OF A LASERGLAZED RENEN4 SUPERALLOY.Materials Transactions Jim,34(8),669-674.
MLA	X. H. Yu,et al."PHASE-ANALYSIS OF A LASERGLAZED RENEN4 SUPERALLOY".Materials Transactions Jim 34.8(1993):669-674.