Effect of tungsten content on the microstructure and tensile properties of Ni-xW-6Cr alloys
Liu, SL; Ye, XX; Jiang, L; Cui, CY; Li, ZJ; Huang, HF; Leng, B; Zhou, XT; Zhou, XT (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Ctr Thorium Molten Salt Reactor Syst, Shanghai 201800, PR, Peoples R China.
2016
发表期刊MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
卷号655期号:-页码:269—276
文章类型期刊文献
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.
关键词Stacking-fault Energy Ultrafine-grained Cu Mechanical-properties High Ductility Behavior Systems
DOI10.1016/j.msea.2016.01.010
收录类别SCI
语种英语
WOS记录号WOS:000370103000032
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25701
专题中科院上海应用物理研究所2011-2018年
通讯作者Ye, XX; Li, ZJ; Zhou, XT (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Ctr Thorium Molten Salt Reactor Syst, Shanghai 201800, PR, Peoples R China.
推荐引用方式
GB/T 7714
Liu, SL,Ye, XX,Jiang, L,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, SL.,Ye, XX.,Jiang, L.,Cui, CY.,Li, ZJ.,...&Zhou, XT .(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, SL,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.
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