Effects of Ru Addition on the Microstructures of the Ni-Based Single Crystal Superalloys

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	Effects of Ru Addition on the Microstructures of the Ni-Based Single Crystal Superalloys
	Du Yunling 1,2; Niu Jianping 2; Wang Xinguang 1; Liu Jinlai 1; Liu Jide 1; Zhou Yizhou 1; Jin Tao 1; Sun Xiaofeng 1
刊名	RARE METAL MATERIALS AND ENGINEERING
	2018-04-01
卷号	47 期号:4 页码:1248-1253
关键词	Ru long term aging TCP phase Ni-based single crystal superalloys
ISSN号	1002-185X
通讯作者	Du Yunling(18640467381@126.com)
英文摘要	The effects of ruthenium (Ru) addition on the microstructures of Ni-based single crystal superalloys as-cast, post-heat treated and long term aged (at 1100 degrees C) were investigated by optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that Ru addition increases the content of eutectic and reduces primary dendritic arm spacing. The solution heat treatment of the 3Ru alloy is more difficult. The stacking fault energy of the gamma matrix obviously decreases after Ru addition, and the extended dislocations in the gamma matrix may impede the movement of the following dislocations during plastic deformation and improve the mechanical properties significantly. During long term aging at 1100 degrees C, Ru addition has no significant effects on the rafting process, and does not change the main type of topologically close-packed (TCP) phase. However, the precipitation process of TCP phase is suppressed after Ru addition. As the aging time is prolonged, the suppression effect of Ru addition is weakened (over 500 h).
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	NORTHWEST INST NONFERROUS METAL RESEARCH
WOS记录号	WOS:000431601500039
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/127992]
专题	金属研究所_中国科学院金属研究所
通讯作者	Du Yunling
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Shenyang Univ, Shenyang 110044, Peoples R China
推荐引用方式 GB/T 7714	Du Yunling,Niu Jianping,Wang Xinguang,et al. Effects of Ru Addition on the Microstructures of the Ni-Based Single Crystal Superalloys[J]. RARE METAL MATERIALS AND ENGINEERING,2018,47(4):1248-1253.
APA	Du Yunling.,Niu Jianping.,Wang Xinguang.,Liu Jinlai.,Liu Jide.,...&Sun Xiaofeng.(2018).Effects of Ru Addition on the Microstructures of the Ni-Based Single Crystal Superalloys.RARE METAL MATERIALS AND ENGINEERING,47(4),1248-1253.
MLA	Du Yunling,et al."Effects of Ru Addition on the Microstructures of the Ni-Based Single Crystal Superalloys".RARE METAL MATERIALS AND ENGINEERING 47.4(2018):1248-1253.