Effects of temperature on superplastic and fracture behaviors of a Ni-Co-based superalloy

doi:10.1016/j.jallcom.2023.170524

IMR OpenIR

	Effects of temperature on superplastic and fracture behaviors of a Ni-Co-based superalloy
	Al-Hammadi, Rashad A.1,2; Zhang, Rui 1; Cui, Chuanyong 1; Zhou, Zijian 1; Zhou, Yizhou 1
通讯作者	Zhang, Rui(rzhang@imr.ac.cn) ; Cui, Chuanyong(chycui@imr.ac.cn)
	2023-10-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	958 页码:13
摘要	The effects of deformation temperatures on the superplastic behavior, microstructure evolution, and failure mechanisms of Ni-Co-based superalloy were analyzed at temperatures ranging from 900 to 1140 degrees C. The superplastic-tensile temperatures have significant effects on flow behavior, which shows distinctive fea-tures of dynamic recrystallization (DRX). The alloy exhibits a striking increase in elongation with increasing the superplastic-tensile temperature to 1100 degrees C, reaching 1760 %. The deformed microstructure was char-acterized using SEM, EBSD, and TEM. As the superplastic-tensile temperatures increased, the DRX-grain fraction increased. The superplastic deformation of the alloy is primarily governed by discontinuous-DRX (DDRX) mechanism. Continuous-DRX (CDRX) had a significant effect at 900 degrees C and occurs as an assistant mechanism during superplastic deformation of the alloy at elevated temperatures. The fracture at 900 degrees C was initiated by a combination of intergranular and micro-void coalescences, while the pure intergranular fracture takes place above 1050 degrees C. Meanwhile, the micro-void coalescence has only a minor effect on the fracture behavior at 1140 degrees C.(c) 2023 Elsevier B.V. All rights reserved.
关键词	Ni-Co-based superalloy Superplastic behavior Deformation mechanism Failure mechanism
资助者	National Key R&D Program of China ; IMR Innovation Fund ; National Science and Technology Major Project of China
DOI	10.1016/j.jallcom.2023.170524
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2019YFA0705300] ; IMR Innovation Fund[2021-PY09] ; National Science and Technology Major Project of China[2019 -VI -0006-0120]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001006128700001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：8[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/321006/178253
专题	中国科学院金属研究所
通讯作者	Zhang, Rui; Cui, Chuanyong
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Al-Hammadi, Rashad A.,Zhang, Rui,Cui, Chuanyong,et al. Effects of temperature on superplastic and fracture behaviors of a Ni-Co-based superalloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2023,958:13.
APA	Al-Hammadi, Rashad A.,Zhang, Rui,Cui, Chuanyong,Zhou, Zijian,&Zhou, Yizhou.(2023).Effects of temperature on superplastic and fracture behaviors of a Ni-Co-based superalloy.JOURNAL OF ALLOYS AND COMPOUNDS,958,13.
MLA	Al-Hammadi, Rashad A.,et al."Effects of temperature on superplastic and fracture behaviors of a Ni-Co-based superalloy".JOURNAL OF ALLOYS AND COMPOUNDS 958(2023):13.