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

doi:10.1016/j.matchar.2023.113211

IMR OpenIR

	Formation and evolution behavior of M6C carbide in a Ni-W-Cr superalloy
	Huang, Meiqian 1,2; Zhou, Zijian 1; Cui, Chuanyong 1; Zhang, Rui 1; Shi, Zhiwu 3; Wang, Xinguang 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Zhou, Zijian(zjzhou19b@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn)
	2023-10-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	204 页码:11
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.
关键词	Ni-W-Cr superalloy Elements redistribution Homogenization Acicular carbide
资助者	National Key R amp; D Program of China ; Innovation Program of Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1016/j.matchar.2023.113211
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001047111400001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：6[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/321006/178967
专题	中国科学院金属研究所
通讯作者	Zhou, Zijian; Cui, Chuanyong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 3.AECC Commercial Aircraft Engine Co Ltd, Dept Mat Engn, Shanghai 200241, 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.