Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity

doi:10.1016/j.matchar.2023.113112

IMR OpenIR

	Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity
	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)
	2023-09-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	203 页码:13
摘要	The effect of strain rate on microstructure evolution of a Ni-Co-base superalloy during superplasticity was examined in this study. The experiments were conducted at 1050 degrees C with various strain rates. The strain rate had profound impacts on flow behavior and elongation that were connected to the characteristics of dynamic recrystallization (DRX). A comparatively high strain rate promoted the occurrence of DRX, and the elongation of >1335% prior to failure was obtained at 0.01/s. Scanning electron microscope (SEM), electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM) measurements were used to investigate the deformed microstructures. A 0.01/s strain rate accelerated the recovery and dissolution within the primary gamma'-phase, resulting in a reduction in its volume fraction and size, which enhanced the DRX process of the gamma-matrix. The primary gamma'-phase partly retarded the DRX process of gamma-matrix grains, which was expedited by twin boundaries. Regardless of strain rate, discontinuous-DRX (DDRX) dominated the superplastic deformation. Meanwhile, continuous-DRX (CDRX) occurrence increased slightly at 0.1/s, which had a minor effect during the superplastic deformation of the Ni-Co-base superalloy.
关键词	Ni-Co-base superalloy Superplasticity Microstructure evolution gamma'-phase Twin
资助者	National Key R amp; D Program of China ; Natural Science Foundation Project of Liaoning Province ; Youth Innovation Promotion Association, CAS
DOI	10.1016/j.matchar.2023.113112
收录类别	SCI
语种	英语
资助项目	National Key R amp; D Program of China[2019YFA0705300] ; Natural Science Foundation Project of Liaoning Province[2023-MS-024] ; Youth Innovation Promotion Association, CAS[2023202]
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:001031381700001
出版者	ELSEVIER SCIENCE INC
引用统计	被引频次：12[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/321006/178670
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. Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity[J]. MATERIALS CHARACTERIZATION,2023,203:13.
APA	Al-Hammadi, Rashad A.,Zhang, Rui,Cui, Chuanyong,Zhou, Zijian,&Zhou, Yizhou.(2023).Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity.MATERIALS CHARACTERIZATION,203,13.
MLA	Al-Hammadi, Rashad A.,et al."Effect of strain rate on microstructure evolution of a fine-grained gamma plus gamma' Ni-Co-base superalloy during superplasticity".MATERIALS CHARACTERIZATION 203(2023):13.