Effect of Ta additions on microstructure and mechanical properties of a single-crystal Co-Al-W-base alloy

IMR OpenIR

	Effect of Ta additions on microstructure and mechanical properties of a single-crystal Co-Al-W-base alloy
	Shi, L.; Yu, J. J.; Cui, C. Y.; Sun, X. F.; jjyu@imr.ac.cn
	2015
发表期刊	MATERIALS LETTERS
ISSN	0167-577X
卷号	149 页码:58-61
摘要	Microstructures and mechanical properties of Co-9.5Al-5W-16Ni-6Cr-xTa (at% where x=0, 1.8, 2.8, named as 0Ta, 1.8Ta and 2.8Ta) alloys are investigated. Microstructures of heat-treated samples are composed of gamma and cubical gamma' precipitates. The gamma' solvus temperature increases obviously with Ta additions. The yield strength as well as creep strength is improved with the addition of Ta. Ta additions affect the high-temperature tensile deformation mechanism. The gamma' phase of the three alloys is rafted along the tensile axis direction during creep tests at 900 degrees C. The creep strength of 2.8Ta alloy is approaching the level of a first-generation Ni-base single-crystal superalloy. (C) 2015 Elsevier B.V. All rights reserved.
部门归属	[shi, l. ; yu, j. j. ; cui, c. y. ; sun, x. f.] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Microstructures Metals And Alloys Co-al-w-base Alloys Tantalum
资助者	High Technology Research and Development Program of China [2014AA041701]; National Natural Science Foundation of China (NSFC) [51171179, 51271174, 51331005, 11332010]
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74773
专题	中国科学院金属研究所
通讯作者	jjyu@imr.ac.cn
推荐引用方式 GB/T 7714	Shi, L.,Yu, J. J.,Cui, C. Y.,et al. Effect of Ta additions on microstructure and mechanical properties of a single-crystal Co-Al-W-base alloy[J]. MATERIALS LETTERS,2015,149:58-61.
APA	Shi, L.,Yu, J. J.,Cui, C. Y.,Sun, X. F.,&jjyu@imr.ac.cn.(2015).Effect of Ta additions on microstructure and mechanical properties of a single-crystal Co-Al-W-base alloy.MATERIALS LETTERS,149,58-61.
MLA	Shi, L.,et al."Effect of Ta additions on microstructure and mechanical properties of a single-crystal Co-Al-W-base alloy".MATERIALS LETTERS 149(2015):58-61.