Amelioration of weld-crack resistance of the M951 superalloy by engineering grain boundaries

doi:10.1016/j.jmst.2020.10.069

CORC > 金属研究所 > 中国科学院金属研究所

	Amelioration of weld-crack resistance of the M951 superalloy by engineering grain boundaries
	Wen, Mingyue 2,3; Sun, Yuan 2; Yu, Jinjiang 2; Yang, Shulin 1; Hou, Xingyu 2; Yang, Yanhong 2; Sun, Xiaofeng 2; Zhou, YiZhou 2
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2021-07-10
卷号	78 页码:260-267
关键词	Fusion weld Superalloys M951 Weld-crack resistance Grain boundary engineering
ISSN号	1005-0302
DOI	10.1016/j.jmst.2020.10.069
通讯作者	Sun, Yuan(yuansun@imr.ac.cn) ; Yu, Jinjiang(jjyu@imr.ac.cn)
英文摘要	Fusion weld is a portable and economical joining and repairing method of metals. However, weld cracks often occur during the fusion weld of Ni-base superalloys, which hinder the applications of fusion weld on this kind of materials. In this work, the effects of microstructures of grain boundaries (GBs) of the prototype M951 superalloy on its weldability were investigated. The precipitated phases, the elemental segregations on GBs, and the morphologies of GBs can be largely altered by regulating the cooling rates of pre-weld heat treatments. With decreasing the cooling rate, chain-like M23X6 phase precipitates along the GBs, accompanying segregations of B, and GBs becomes more serrated in morphology. During fusion weld, the engineered GBs in the M951 superalloy with a low cooling rate favor the formation of the continuous liquid films on GBs, which together with the serrated GB morphology significantly prevents the formation of weld cracks. Our findings imply that the weld-crack resistance of the superalloys can be ameliorated by engineering GBs. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	National Natural Science Foundation of China[51971214] ; National Natural Science Foundation of China[51771191] ; National Natural Science Foundation of China[51801206] ; Aeronautics Power Foundation of China[DLJJ1825]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000652023600025
资助机构	National Natural Science Foundation of China ; Aeronautics Power Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161110]
专题	金属研究所_中国科学院金属研究所
通讯作者	Sun, Yuan; Yu, Jinjiang
作者单位	1.Shenyang Liming Aeroengine Cooperat Ltd, Shenyang 110043, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wen, Mingyue,Sun, Yuan,Yu, Jinjiang,et al. Amelioration of weld-crack resistance of the M951 superalloy by engineering grain boundaries[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,78:260-267.
APA	Wen, Mingyue.,Sun, Yuan.,Yu, Jinjiang.,Yang, Shulin.,Hou, Xingyu.,...&Zhou, YiZhou.(2021).Amelioration of weld-crack resistance of the M951 superalloy by engineering grain boundaries.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,78,260-267.
MLA	Wen, Mingyue,et al."Amelioration of weld-crack resistance of the M951 superalloy by engineering grain boundaries".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 78(2021):260-267.