Microstructure and corrosion characterization of weld metal in stainless steel and low carbon steel joint under different heat input

doi:10.1016/j.mtcomm.2021.102948

CORC > 兰州理工大学 > 兰州理工大学 > 外国语学院

	Microstructure and corrosion characterization of weld metal in stainless steel and low carbon steel joint under different heat input
	Huang, Yanqin 1; Huang, Jankang 1; Zhang, Jianxiao 2,3; Yu, Xiaoquan 1; Li, Qi 2; Wang, Zhen 2; Fan, Ding 2
刊名	MATERIALS TODAY COMMUNICATIONS
	2021-12
卷号	29
关键词	Stainless steel/low carbon steel Dissimilar steel welding Microstructure Corrosion resistance
DOI	10.1016/j.mtcomm.2021.102948
英文摘要	In this study, a novel method of the arc assisted tungsten insert gas (AA-TIG) backing welding and the submerged arc welding (SAW) to fill the groove was used to join 12Cr2Mo1R low carbon steel and S30408 stainless steel. The weld metal microstructure characteristics of different heat input and its microhardness and corrosion resistance were investigated in detail. The optical microscope (OM) and scanning electron microscope (SEM) was used to analyze the microstructure and composition distribution of weld zone. The cyclic potentiodynamic polarization and electrochemical impedance spectroscopy were employed to determine corrosion resistance of weld zone under different heat input. The results show that the combination welding process of AA-TIG backing welding and SAW can effectively join thick plate with high efficiency, and the weld shape is good without incomplete fusion and penetration. A higher ratio between ferrite and austenite under higher heat input, resulting in finer microstructure with increased hardness. Further, discovered by discussing the corrosion mechanism is due to the high content of Ni and C elements in the weld are likely to form Ni-C phase, which become the inducing point of pitting corrosion. It is recommended to use a higher heat input to obtain the best corrosion resistance of the welded area.
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000718041200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150057]
专题	外国语学院材料科学与工程学院
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China; 3.Lanzhou LS Heavy Equipment Co LTD, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Huang, Yanqin,Huang, Jankang,Zhang, Jianxiao,et al. Microstructure and corrosion characterization of weld metal in stainless steel and low carbon steel joint under different heat input[J]. MATERIALS TODAY COMMUNICATIONS,2021,29.
APA	Huang, Yanqin.,Huang, Jankang.,Zhang, Jianxiao.,Yu, Xiaoquan.,Li, Qi.,...&Fan, Ding.(2021).Microstructure and corrosion characterization of weld metal in stainless steel and low carbon steel joint under different heat input.MATERIALS TODAY COMMUNICATIONS,29.
MLA	Huang, Yanqin,et al."Microstructure and corrosion characterization of weld metal in stainless steel and low carbon steel joint under different heat input".MATERIALS TODAY COMMUNICATIONS 29(2021).