Fatigue Damage Evolution and Short Crack Behavior of the Fusion Zone of SUS301L-HT Stainless Steel Laser-Arc Hybrid Welding Joints

2021 ◽  
Author(s):  
Xu Zhao ◽  
Weihua Zhang ◽  
Hui Chen
Keyword(s):  
Stainless Steel ◽  
Fusion Zone ◽  
Fatigue Damage ◽  
Damage Evolution ◽  
Short Crack ◽  
Hybrid Welding ◽  
Crack Behavior ◽  
Welding Joints

Porosity and joint property of laser-MIG hybrid welding joints for 304 stainless steel

2020 ◽  
Vol 32 (2) ◽  
pp. 022056
Author(s):  
Detao Cai ◽  
Ziyi Luo ◽  
Limei Han ◽  
Shanguo Han ◽  
Yaoyong Yi
Keyword(s):  
Stainless Steel ◽  
304 Stainless Steel ◽  
Hybrid Welding ◽  
Welding Joints ◽  
Joint Property

Understanding of Laser and Hybrid Welding Phenomena

2008 ◽  
Vol 580-582 ◽  
pp. 535-538 ◽  
Author(s):  
Seiji Katayama ◽  
Yousuke Kawahito ◽  
Masami Mizutani
Keyword(s):  
Stainless Steel ◽  
Aluminum Alloy ◽  
Fusion Zone ◽  
Molten Pool ◽  
Bubble Formation ◽  
Hybrid Welding ◽  
Laser Weld ◽  
Pool Surface ◽  
Weld Fusion Zone ◽  
Keyhole Behavior

This paper describes laser and hybrid welding phenomena for the production of a sound and deep weld. The penetration of laser weld beads depended upon the power and power density at low and high welding speeds, respectively. It was reveled that the weld fusion zone geometry was formed by keyhole behavior and melt flows. It was also understood that the production of sound welds without porosity was attributed to no bubble formation in TIG-YAG hybrid welding of stainless steel and the disappearance of bubbles from the molten pool surface in YAG-MIG hybrid welding of aluminum alloy.

HISCC behavior of SUS301L-MT stainless steel laser-arc hybrid welding joints

2019 ◽  
Vol 33 (01n03) ◽  
pp. 1940042 ◽  
Author(s):  
Z. H. Fu ◽  
T. Li ◽  
M. L. Mei ◽  
G. Q. Gou ◽  
Z. Y. Zhu ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Weld Metal ◽  
Strain Rate ◽  
Stress Corrosion Cracking ◽  
Index Formula ◽  
Hybrid Welding ◽  
Nacl Solution ◽  
Induced Stress ◽  
Secondary Cracks ◽  
Welding Joints

The hydrogen-induced stress corrosion cracking (HISCC) behavior of SUS301L-MT stainless steel laser-arc hybrid welding (LAHW) joints was investigated using slow strain rate tensile (SSRT) method in 3.5 wt.% NaCl solution under different cathodic potentials. With the negative shift of applied potentials from open circle potential (OCP) to −1400 mV[Formula: see text], the HISCC susceptibility index ([Formula: see text]) decreased from 0.15 (OCP) to 0.06 (−400 mV[Formula: see text]), then increased to 0.28 (−1400 mV[Formula: see text]). The specimens tested in air and under OCP to −800 mV ruptured in weld metal zone with ductile features of dimples. While with the potential turned more negative, the specimens ruptured in base metal zone with brittle features of transgranular cleave in martensite, intergranular failure and secondary cracks [Chen et al., Int. J. Adv. Manuf. Technol. 73, 1695 (2014)].

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