Effects of cerium addition on the microstructure and stress rupture properties of a new nickel-based cast superalloy

doi:10.1016/j.jmst.2023.01.060

IMR OpenIR

	Effects of cerium addition on the microstructure and stress rupture properties of a new nickel-based cast superalloy
	Rong, Lirong 1,2; Wang, Min 2,3; Xing, Weiwei 2,3; Hao, Xianchao 2,3; Ma, Yingche 2,3
通讯作者	Xing, Weiwei(wwxing@imr.ac.cn) ; Ma, Yingche(ycma@imr.ac.cn)
	2023-10-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	159 页码:112-124
摘要	The microstructure and stress rupture properties of a new nickel-based cast superalloy were investigated with the cerium (Ce) additions of 0, 19, 50, 96, 150, and 300 ppm, respectively. The results indicated that Ce was mainly found in MC and M23C6 carbides, and it was also found to exist in the form of cerium -rich phases or inclusions. According to the microstructure evidence, Ce promoted the formation of MC carbides and aggravated the inhomogeneity of M23C6 carbides along grain boundaries. It was also identi-fied that the average sizes of primary and secondary gamma' phases all decreased with the rising Ce content. The acceleration of Ti, Nb, and C segregations during solidification was attributed to the influence of cerium on the variation of carbides along grain boundaries. The stress rupture life experienced a signifi-cant drop as the Ce content increased from 19 to 300 ppm. Explorations showed that the degradation was mainly attributed to the severe degradation of MC carbides and the easily forming micro-voids around them caused by the Ce addition. In addition to that, the increments in the inhomogeneous distribution of M23C6 carbides at grain boundaries and the accelerated coarsening rate of gamma' phases both induced the fracture under complex stress conditions.(c) 2023 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词	Nickel -based cast superalloy Cerium M C carbide Stress rupture properties
资助者	National Science and Technology Major Project of China ; China Postdoctoral Science Foundation
DOI	10.1016/j.jmst.2023.01.060
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project of China[J2019 -VI -0 0 04-0118] ; China Postdoctoral Science Foundation[2020M671403]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000987108900001
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：11[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/321006/177666
专题	中国科学院金属研究所
通讯作者	Xing, Weiwei; Ma, Yingche
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Rong, Lirong,Wang, Min,Xing, Weiwei,et al. Effects of cerium addition on the microstructure and stress rupture properties of a new nickel-based cast superalloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2023,159:112-124.
APA	Rong, Lirong,Wang, Min,Xing, Weiwei,Hao, Xianchao,&Ma, Yingche.(2023).Effects of cerium addition on the microstructure and stress rupture properties of a new nickel-based cast superalloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,159,112-124.
MLA	Rong, Lirong,et al."Effects of cerium addition on the microstructure and stress rupture properties of a new nickel-based cast superalloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 159(2023):112-124.