Influence of Ru on Solidification Behavior, Microstructure and Hardness of Re-free Ni-based Equiaxed Superalloys with High Cr Content

IMR OpenIR

	Influence of Ru on Solidification Behavior, Microstructure and Hardness of Re-free Ni-based Equiaxed Superalloys with High Cr Content
	Guan, Yingshuang; Liu, Enze; Guan, Xiurong; Zheng, Zhi; nzliu@mir.ac.cn; guan7551@sina.com
	2016
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	32 期号:3 页码:271-281
摘要	The effect of Ru addition on solidification behavior, microstructure and hardness of Re-free Ni-based equiaxed superalloys with high Cr content has been investigated. With the increase of Ru, the solidus temperature of the alloys and the gamma' solvus temperature decreased, respectively. However, the liquidus temperatures of the alloys had no obvious change. The microstructure of the as-cast alloys was mainly composed of gamma,gamma', gamma/gamma' eutectic and MC carbides. The gamma/gamma' eutectic was completely dissolved after the heat treatment. The morphology of gamma' was more cuboidal in heat-treated alloys with increasing Ru. Furthermore, the volume fraction of gamma' in the as-cast and heat-treated alloys diminished upon the increase of Ru. It was noted that Ru addition changed the segregation behaviors of Cr and Mo in the alloys from positive segregation element to negative segregation element and promotes the segregation degree of W. As the Ru content increased, the magnitude of segregation of the positive segregation elements Ta and Ti increased accordingly. Meanwhile, the magnitude of Al segregation decreased and Ru tended to segregate in the dendrite core. In addition, the hardness of the alloys improved and their porosity reduced with increasing amount of Ru. Copyright (C) 2015, The editorial office of Journal of Materials Science & Technology. Published by Elsevier Limited. All rights reserved.
部门归属	[guan, yingshuang ; guan, xiurong] shenyang ligong univ, sch environm & chem engn, shenyang 110159, peoples r china ; [guan, yingshuang ; liu, enze ; zheng, zhi] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china
关键词	Ru Ni-based Equiaxed Superalloy Microstructure Segregation Hardness
收录类别	sci
语种	英语
WOS记录号	WOS:000370814900011
引用统计	被引频次：16[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/321006/74918
专题	中国科学院金属研究所
通讯作者	nzliu@mir.ac.cn; guan7551@sina.com
推荐引用方式 GB/T 7714	Guan, Yingshuang,Liu, Enze,Guan, Xiurong,et al. Influence of Ru on Solidification Behavior, Microstructure and Hardness of Re-free Ni-based Equiaxed Superalloys with High Cr Content[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2016,32(3):271-281.
APA	Guan, Yingshuang,Liu, Enze,Guan, Xiurong,Zheng, Zhi,nzliu@mir.ac.cn,&guan7551@sina.com.(2016).Influence of Ru on Solidification Behavior, Microstructure and Hardness of Re-free Ni-based Equiaxed Superalloys with High Cr Content.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,32(3),271-281.
MLA	Guan, Yingshuang,et al."Influence of Ru on Solidification Behavior, Microstructure and Hardness of Re-free Ni-based Equiaxed Superalloys with High Cr Content".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 32.3(2016):271-281.