Solidification Characteristics and Dendritic Segregation of As-Cast GH742 Alloys

IMR OpenIR

	Solidification Characteristics and Dendritic Segregation of As-Cast GH742 Alloys
	Pan Xiaolin 1,2; Sun Wenru 1; Li Zhan 3; Yang Shulin 1; Guo Shouren 1; Yang Hongcai 2; Hu Zhuangqi 1
通讯作者	Pan Xiaolin(xlpan0512@hotmail.com)
	2010
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	39 期号:1 页码:55-59
摘要	High alloying GH742 alloys exhibit severe dendritic segregation with Nb and Ti intensively segregated to the interdendritic regions, leading to the precipitation of MC carbide, (gamma+gamma') eutectic, Laves phase and delta phase. High content of Mo as well as its dendritic segregation is the significant reason for the precipitation of sigma phase. Two phases containing rare earth elements, Ni(5)Ce phase and RE-O-S phase, are precipitated in the interdendritic regions due to the enrichment of La and Ce. Different from other superalloys, both eutectic reactions of (gamma+gamma') and (gamma+Laves) take place in sequence during the solidification process of GH742 alloys owing to the high contents of Al, Ti and Nb. The solidification temperature range of GH742 alloys is between 1346 and 1190 degrees C, and the solidification sequence is gamma, MC, (gamma+gamma'), Laves and Ni(5)Ce, which is determined by differential thermal analysis and solidification microstructure characterization.
关键词	GH742 solidification segregation microstructure
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000276258200012
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
引用统计	被引频次：5[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/321006/100616
专题	中国科学院金属研究所
通讯作者	Pan Xiaolin
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Northeastern Univ, Shenyang 110004, Peoples R China 3.Shenyang Univ Sci & Technol, Shenyang 110168, Peoples R China
推荐引用方式 GB/T 7714	Pan Xiaolin,Sun Wenru,Li Zhan,et al. Solidification Characteristics and Dendritic Segregation of As-Cast GH742 Alloys[J]. RARE METAL MATERIALS AND ENGINEERING,2010,39(1):55-59.
APA	Pan Xiaolin.,Sun Wenru.,Li Zhan.,Yang Shulin.,Guo Shouren.,...&Hu Zhuangqi.(2010).Solidification Characteristics and Dendritic Segregation of As-Cast GH742 Alloys.RARE METAL MATERIALS AND ENGINEERING,39(1),55-59.
MLA	Pan Xiaolin,et al."Solidification Characteristics and Dendritic Segregation of As-Cast GH742 Alloys".RARE METAL MATERIALS AND ENGINEERING 39.1(2010):55-59.