Effect of tungsten content on the microstructure and tensile properties of Ni-xW-6Cr alloys

IMR OpenIR

	Effect of tungsten content on the microstructure and tensile properties of Ni-xW-6Cr alloys
	Liu, Shulin; Ye, Xiang-Xi; Jiang, Li; Cui, Chuanyong; Li, Zhijun; Huang, Hefei; Leng, Bin; Zhou, Xingtai; yexiangxi@sinap.ac.cn; lizhijun@sinap.ac.cn; zhouxingtai@sinap.ac.cn
	2016
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	655 页码:269-276
摘要	Ni-xW-6Cr alloys have been considered as one of the potential structural materials for molten salt techniques, whereas their microstructure and mechanical performance have not been sufficiently studied. In this study, the microstructure and tensile deformation behavior of Ni-(10-35 wt%)W-6Cr alloys have been systematically investigated. The phase diagram calculations indicated that the solubility limit of W is 34 wt% in Ni-xW-6Cr alloy. alpha-W phase is formed in the matrix while the W content exceeds such limit. The fracture of the Ni-(10-35 wt%)W-6Cr alloys at room temperature is in the transgranular ductile fracture mode. The tensile properties of alloys, except for the elongation of Ni-35 wt%W-6Cr alloy, are improved with the increase of W content, which can be explained by the larger lattice distortion, the lower stack fault energy and the higher length fraction of twin boundaries (Sigma 3 and Sigma 9 type) in the Ni-(10-35 wt%)W-6Cr alloys caused by the addition of more W. The reduced elongation of the Ni-35 wt%W-6Cr alloy is ascribed to the particles in alpha-W phase which act as the main nucleation sites for cracking. (C) 2016 Elsevier B.V. All rights reserved.
部门归属	[liu, shulin ; ye, xiang-xi ; jiang, li ; li, zhijun ; huang, hefei ; leng, bin ; zhou, xingtai] chinese acad sci, shanghai inst appl phys, ctr thorium molten salt reactor syst, shanghai 201800, pr, peoples r china ; [liu, shulin ; jiang, li] univ chinese acad sci, beijing 100049, peoples r china ; [cui, chuanyong] chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Ni-w-cr Alloy Alpha-w Phase Ebsd Tensile Deformation Twin Boundaries
资助者	Program of International S&T Cooperation, ANSTO-SINAP [2014DFG60230]; National Natural Science Foundation of China [51371188, 51501216]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA02004210]
收录类别	sci
语种	英语
WOS记录号	WOS:000370103000032
引用统计	被引频次：33[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/321006/74776
专题	中国科学院金属研究所
通讯作者	yexiangxi@sinap.ac.cn; lizhijun@sinap.ac.cn; zhouxingtai@sinap.ac.cn
推荐引用方式 GB/T 7714	Liu, Shulin,Ye, Xiang-Xi,Jiang, Li,et al. Effect of tungsten content on the microstructure and tensile properties of Ni-xW-6Cr alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,655:269-276.
APA	Liu, Shulin.,Ye, Xiang-Xi.,Jiang, Li.,Cui, Chuanyong.,Li, Zhijun.,...&zhouxingtai@sinap.ac.cn.(2016).Effect of tungsten content on the microstructure and tensile properties of Ni-xW-6Cr alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,655,269-276.
MLA	Liu, Shulin,et al."Effect of tungsten content on the microstructure and tensile properties of Ni-xW-6Cr alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 655(2016):269-276.