Effect of pre-deformation homogenization on high-temperature deformation behavior and microstructure evolution of a new Ni-W-Cr superalloy

doi:10.1016/j.msea.2025.148112

IMR OpenIR

	Effect of pre-deformation homogenization on high-temperature deformation behavior and microstructure evolution of a new Ni-W-Cr superalloy
	Huang, Meiqian 1,2; Zhou, Zijian 1; Cui, Chuanyong 1; Wang, Xinguang 1; Zhang, Rui 1; Tao, Xipeng 1; Ye, Xiang-xi 3; Zhou, Yizhou 1; Sun, Xiaofeng 1
通讯作者	Zhou, Zijian(zjzhou19b@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn)
	2025-05-01
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	929 页码:16
摘要	To address the challenges posed by high tungsten (W) content (>= 26 wt.%) in a novel Ni-W-Cr alloy designed for next-generation molten salt energy systems, which leads to segregation of refractory elements and difficulties in conventional thermal deformation processing, the effects of pre-deformation homogenization on deformation behavior and microstructural evolution have been investigated. Techniques including scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM) were employed for analysis. A novel homogenization heat treatment method was developed for Ni-W-Cr alloys with elevated refractory element content. Pre-deformation introduces a range of defects, including dislocations and substructures, which act as diffusion channels, facilitating the rapid transport of elements and promoting the dissolution of refractory segregation phases, thereby significantly reducing homogenization time. Moreover, pre-deformation homogenization enhances the reprecipitation of carbides by dissolving large primary carbides into finely dispersed particles, strengthening grain boundaries and minimizing crack initiation at weak boundary regions. Additionally, dislocations and other defects serve as nucleation sites for dynamic recrystallization (DRX), promoting an additional continuous dynamic recrystallization (CDRX)-assisted nucleation mechanism. This mechanism significantly enhances DRX nucleation, thereby improving the hot workability of the alloy.
关键词	Ni-W-Cr superalloy Pre-deformation Homogenization Recrystallization Microstructure evolution
资助者	National Key Research and Devel-opment Program of China ; National Natural Science Foundation of China ; Innovation Program of Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1016/j.msea.2025.148112
收录类别	SCI
语种	英语
资助项目	National Key Research and Devel-opment Program of China[2023YFB3508100] ; National Natural Science Foundation of China[52401068] ; Innovation Program of Institute of Metal Research, Chinese Academy of Sciences[2023-PY08]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001437918000001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/179778
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.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
推荐引用方式 GB/T 7714	Huang, Meiqian,Zhou, Zijian,Cui, Chuanyong,et al. Effect of pre-deformation homogenization on high-temperature deformation behavior and microstructure evolution of a new Ni-W-Cr superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2025,929:16.
APA	Huang, Meiqian.,Zhou, Zijian.,Cui, Chuanyong.,Wang, Xinguang.,Zhang, Rui.,...&Sun, Xiaofeng.(2025).Effect of pre-deformation homogenization on high-temperature deformation behavior and microstructure evolution of a new Ni-W-Cr superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,929,16.
MLA	Huang, Meiqian,et al."Effect of pre-deformation homogenization on high-temperature deformation behavior and microstructure evolution of a new Ni-W-Cr superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 929(2025):16.