Welding Crack of Ni-Based Alloys: A Review

doi:10.11900/0412.1961.2020.00200

	Welding Crack of Ni-Based Alloys: A Review
	Yu, Lei 1,2; Cao, Rui 1,2
刊名	Jinshu Xuebao/Acta Metallurgica Sinica
	2021-01-11
卷号	57 期号:1 页码:16-28
关键词	Aerospace industry Ductility Liquid films Nuclear fuels Precipitation (chemical) Solidification Welding Ductility-dip cracking Liquation cracking Precipitation rates Solidification cracking Strain-age cracking Synergistic effect Technical limitations Welding method
ISSN号	04121961
DOI	10.11900/0412.1961.2020.00200
英文摘要	Recently, Ni-based weldments have been widely used in various industries, including aerospace, nuclear power, thermal power, and petrochemicals. In this paper, the classification and welding methods of Ni-based alloys are introduced. Fusion welding methods were mainly used for the welding of Ni-based alloys because of cost and technical limitations. The mechanism of welding cracks in Ni-based alloys and the effects of various elements on cracks are mainly reviewed. Solidification cracking, liquation cracking, ductility-dip cracking, and strain-age cracking frequently occurred in fusion welding processes. The appearance of a low-melting liquid film has been found to be the main reason for the relative clarity of the mechanisms of solidification cracking and liquation cracking. Ductility-dip cracking is still not clearly defined, and its mechanism in Ni-based alloys remains obscure. Strain-age cracking of Ni-based alloys is unique to precipitation-strengthened-Ni-based alloys and closely related to the precipitation rate. Though much research has been done, impurities and addition of elements have a major effect on welding cracks of Ni-based alloys. Therefore, the influence of most elements alone and the synergistic effects on cracks need further study. © 2021, Science Press. All right reserved.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	中文
出版者	Chinese Academy of Sciences
WOS记录号	WOS:000624917400002
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/147216]
专题	材料科学与工程学院
作者单位	1.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Yu, Lei,Cao, Rui. Welding Crack of Ni-Based Alloys: A Review[J]. Jinshu Xuebao/Acta Metallurgica Sinica,2021,57(1):16-28.
APA	Yu, Lei,&Cao, Rui.(2021).Welding Crack of Ni-Based Alloys: A Review.Jinshu Xuebao/Acta Metallurgica Sinica,57(1),16-28.
MLA	Yu, Lei,et al."Welding Crack of Ni-Based Alloys: A Review".Jinshu Xuebao/Acta Metallurgica Sinica 57.1(2021):16-28.