Hot Deformation Behavior and Workability of a New Ni-W-Cr Superalloy for Molten Salt Reactors

doi:10.1007/s40195-024-01701-4

IMR OpenIR

	Hot Deformation Behavior and Workability of a New Ni-W-Cr Superalloy for Molten Salt Reactors
	Liu, Long 1,2; Zhou, Zijian 1; Yu, Jie 3; Wang, Xinguang 1; Cui, Chuanyong 1; Zhang, Rui 1; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Zhou, Zijian(zjzhou19b@imr.ac.cn) ; Yu, Jie(13354133046@163.com) ; Wang, Xinguang(xgwang11b@imr.ac.cn)
	2024-06-13
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	14
摘要	The hot deformation behavior of a newly developed Ni-W-Cr superalloy for use in 800 degrees C molten salt reactors (MSRs) was looked into by isothermal compression tests in the temperature range of 1050-1200 degrees C with a strain rate of 0.001-1 s-1 under a true strain of 0.693. An Arrhenius-type model for the Ni-W-Cr superalloy was constructed by fitting the corrected flow stress data. In this model, the effect of dispersion of solid solution elements during thermal deformation on microstructure evolution was considered, as well as the effects of friction and adiabatic heating on the temperature and strain rate-dependent variation of flow stresses. The hot deformation activation energy of the Ni-W-Cr superalloy was 323 kJ/mol, which was less than that of the Hastelloy N alloy (currently used in MSRs). According to the rectified flow stress data, processing maps were created. In conjunction with the corresponding deformation microstructures, the flow instability domains of the Ni-W-Cr superalloy were determined to be 1050-1160 degrees C/0.03-1 s-1 and 1170-1200 degrees C/0.001-0.09 s-1. In these deformation conditions, a locally inhomogeneous microstructure was caused by flow-i.e., incomplete dynamic recrystallization and hot working parameters should avoid sliding into these domains. The ideal processing hot deformation domain for the Ni-W-Cr superalloy was determined to be 1170-1200 degrees C/0.6-1 s-1.
关键词	Ni-W-Cr Superalloy Hot deformation behavior Constitutive equation Processing map Microstructure evolution
资助者	National Key R&D Program of China ; IMR Innovation Fund
DOI	10.1007/s40195-024-01701-4
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2021YFB3700601] ; National Key R&D Program of China[2019YFA0705304] ; IMR Innovation Fund[2023-PY08]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001246015300003
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：3[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/321006/187033
专题	中国科学院金属研究所
通讯作者	Zhou, Zijian; Yu, Jie; Wang, Xinguang
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Fushun Special Steel Co Ltd, Fushun 113000, Peoples R China
推荐引用方式 GB/T 7714	Liu, Long,Zhou, Zijian,Yu, Jie,et al. Hot Deformation Behavior and Workability of a New Ni-W-Cr Superalloy for Molten Salt Reactors[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:14.
APA	Liu, Long.,Zhou, Zijian.,Yu, Jie.,Wang, Xinguang.,Cui, Chuanyong.,...&Sun, Xiaofeng.(2024).Hot Deformation Behavior and Workability of a New Ni-W-Cr Superalloy for Molten Salt Reactors.ACTA METALLURGICA SINICA-ENGLISH LETTERS,14.
MLA	Liu, Long,et al."Hot Deformation Behavior and Workability of a New Ni-W-Cr Superalloy for Molten Salt Reactors".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):14.