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Formation and evolution behavior of M6C carbide in a Ni-W-Cr superalloy

文献类型：期刊论文

作者Huang, Meiqian2,3; Zhou, Zijian2; Cui, Chuanyong2; Zhang, Rui2; Shi, Zhiwu1; Wang, Xinguang2; Zhou, Yizhou2; Sun, Xiaofeng2
刊名MATERIALS CHARACTERIZATION
出版日期2023-10-01
卷号204页码:11
关键词Ni-W-Cr superalloy Elements redistribution Homogenization Acicular carbide
ISSN号1044-5803
DOI10.1016/j.matchar.2023.113211
通讯作者Zhou, Zijian(zjzhou19b@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn)
英文摘要The carbide formation and evolution of a new Ni-26W-6Cr (wt.%) superalloy for the 800 & DEG;C molten salt reactor (MSR) was investigated by homogenization heat treatment tests and the effect of carbide characteristics on the plastic deformation behavior was further investigated by isothermal simulated tensile tests. The plastic defor-mation properties of Ni-26W-6Cr superalloys are associated with the morphological characteristics and distri-bution of carbides. During homogenization at 1220 & DEG;C, a unique phenomenon was discovered, that is, the precipitation of the acicular carbide. The XRD, TEM and EBSD results show that this acicular carbide is distributed along the particular crystal plane of the & gamma; matrix. Based on crystallographic theory, there is no obvious orientation relationship between the carbide and the & gamma; matrix, which is prone to cracking along the carbide/& gamma; interface during deformation. After homogenization at 1220 & DEG;C for 48 h, the acicular M6C carbides dissolved and the discrete granular M6C carbides distributed diffusely at the grain boundaries can relieve stress concentration and strengthen the grain boundaries, reducing the deformation resistance of the alloy, effectively inhibiting grain boundary slip and thus inhibiting crack propagation, and improving the tensile strength and plasticity of the material.
资助项目National Key R amp; D Program of China[2021YFB3700601] ; National Key R amp; D Program of China[2019YFA0705304] ; Innovation Program of Institute of Metal Research, Chinese Academy of Sciences[2023-PY08]
WOS研究方向Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
WOS记录号WOS:001047111400001
出版者ELSEVIER SCIENCE INC
资助机构National Key R amp; D Program of China ; Innovation Program of Institute of Metal Research, Chinese Academy of Sciences
源URL[http://ir.imr.ac.cn/handle/321006/178966]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhou, Zijian; Cui, Chuanyong
作者单位1.AECC Commercial Aircraft Engine Co Ltd, Dept Mat Engn, Shanghai 200241, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Meiqian,Zhou, Zijian,Cui, Chuanyong,et al. Formation and evolution behavior of M6C carbide in a Ni-W-Cr superalloy[J]. MATERIALS CHARACTERIZATION,2023,204:11.
APA Huang, Meiqian.,Zhou, Zijian.,Cui, Chuanyong.,Zhang, Rui.,Shi, Zhiwu.,...&Sun, Xiaofeng.(2023).Formation and evolution behavior of M6C carbide in a Ni-W-Cr superalloy.MATERIALS CHARACTERIZATION,204,11.
MLA Huang, Meiqian,et al."Formation and evolution behavior of M6C carbide in a Ni-W-Cr superalloy".MATERIALS CHARACTERIZATION 204(2023):11.

入库方式： OAI收割

来源：金属研究所

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