Stress corrosion cracking behavior of SUS301L-MT stainless steel laser-arc hybrid welded joints

doi:10.1016/j.corsci.2018.08.002

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	Stress corrosion cracking behavior of SUS301L-MT stainless steel laser-arc hybrid welded joints
	Fu, ZH ; Gou, GQ ; Zhu, ZY ; Ma, CP ; Yang, WQ ; Zhang, LL ; Hu, YC ; Gao, W
刊名	CORROSION SCIENCE
	2018
卷号	143 期号:-页码:23-30
关键词	MECHANICAL-PROPERTIES INTERGRANULAR CORROSION RAILWAY VEHICLES WELDING JOINT UNMIXED ZONE MICROSTRUCTURE SENSITIZATION RESISTANCE METALS GROWTH
ISSN号	0010-938X
DOI	10.1016/j.corsci.2018.08.002
文献子类	期刊论文
英文摘要	Laser-arc hybrid welding (LAHW) has potentially employed for the excellent welding of cold rolled SUS301L stainless steel, promising for the new generation subway vehicles underframe, due to its low heat input and high welding speed. However, the stress corrosion cracking (SCC) behavior of this type welded joints is still unclear, which may be a potential risk for its applications. Here, in combination with the fracture morphology, microstructure and potentiodynamic polarization of the weld metal (WM), heat affect zone (HAZ) and base metal (BM), the slow strain rate tensile (SSRT) method was applied to systematically investigate its SCC behavior of LAHW-based SUS301L-MT stainless steel in 3.5 wt.% NaCl solution. The result indicated that the SCC susceptibility index (I-SSRT) of welded joints is 0.09, much lower than that of BM (0.23). The low I-SSRT should be mainly attributed to the cathodic protection of austenite originated from the corroding delta-gamma interfaces. We believe that this study will help to facilitate the wide applications of LAHW for new generation of subway vehicles under frame and others high strength welding structures.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/31121]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.CRRC Qingdao Sifang Locomot Co Ltd, Qingdao 266550, Peoples R China 2.Univ Auckland, Dept Chem & Mat Engn, PB 92019, Auckland 1142, New Zealand 3.Southwest Jiaotong Univ, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China 4.Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China
推荐引用方式 GB/T 7714	Fu, ZH,Gou, GQ,Zhu, ZY,et al. Stress corrosion cracking behavior of SUS301L-MT stainless steel laser-arc hybrid welded joints[J]. CORROSION SCIENCE,2018,143(-):23-30.
APA	Fu, ZH.,Gou, GQ.,Zhu, ZY.,Ma, CP.,Yang, WQ.,...&Gao, W.(2018).Stress corrosion cracking behavior of SUS301L-MT stainless steel laser-arc hybrid welded joints.CORROSION SCIENCE,143(-),23-30.
MLA	Fu, ZH,et al."Stress corrosion cracking behavior of SUS301L-MT stainless steel laser-arc hybrid welded joints".CORROSION SCIENCE 143.-(2018):23-30.