Effect of relative position in low-power pulsed-laser–tungsten-inert-gas hybrid welding on laser-arc interaction

2018 ◽  
Vol 36 ◽  
pp. 426-433 ◽  
Author(s):  
Hao Gui ◽  
Ke Zhang ◽  
Danyang Li ◽  
Zhuguo Li
Keyword(s):  
Low Power ◽  
Relative Position ◽  
Pulsed Laser ◽  
Inert Gas ◽  
Hybrid Welding

Numerical simulation for pulsed laser–gas tungsten arc hybrid welding of magnesium alloy

2018 ◽  
Vol 25 (9) ◽  
pp. 995-1002 ◽  
Author(s):  
Zhong-lin Hou ◽  
Li-ming Liu ◽  
Xin-ze Lv ◽  
Jun Qiao ◽  
Hong-yang Wang
Keyword(s):  
Numerical Simulation ◽  
Magnesium Alloy ◽  
Pulsed Laser ◽  
Hybrid Welding ◽  
Gas Tungsten Arc ◽  
Gas Tungsten

Low‐power pulsed‐laser annealing of implanted GaAs

1991 ◽  
Vol 69 (7) ◽  
pp. 3882-3885 ◽  
Author(s):  
G. Vitali ◽  
M. Rossi ◽  
D. Karpuzov ◽  
H. Budinov ◽  
M. Kalitzova
Keyword(s):  
Low Power ◽  
Laser Annealing ◽  
Pulsed Laser ◽  
Pulsed Laser Annealing

scholarly journals Comparative Study of Laser-Arc Hybrid Welding for AA6082-T6 Aluminum Alloy with Two Different Arc Modes

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 407 ◽  
Author(s):  
Xiaohui Han ◽  
Zhibin Yang ◽  
Yin Ma ◽  
Chunyuan Shi ◽  
Zhibin Xin
Keyword(s):  
Aluminum Alloy ◽  
Heat Affected Zone ◽  
Metal Transfer ◽  
Inert Gas ◽  
Hybrid Welding ◽  
Cold Metal Transfer ◽  
Melted Zone ◽  
Cold Metal ◽  
Fracture Features ◽  
Softening Region

The effects of arc modes on laser-arc hybrid welding for AA6082-T6 aluminum alloy were comparatively studied. Two arc modes were employed: pulsed metal inert gas arc and cold metal transfer arc. The results indicated that joints without porosity, undercutting, or other defects were obtained with both laser-pulsed metal inert gas hybrid welding (LPMHW) and laser-cold metal transfer hybrid welding (LCHW). Spatter was reduced, and even disappeared, during the LCHW process. The sizes of equiaxed dendrites and the width of the partially melted zone in the LPMHW joint were larger than those in the LCHW joint. The microhardness in each zone of the LPMHW joint was lower than that of the LCHW joint. The softening region in the heat-affected zone of the LPMHW joint was wider than that of the LCHW joint. The tensile strength of the LCHW joint was higher than that of the LPMHW joint. For the two joints, the fractures all occurred in the softening region in the heat-affected zone, and the fracture morphologies showed ductile fracture features. The dimples in the fractograph of the LCHW joint were deeper than those of the LPMHW joint.

Pulsed LASER-(Micro)TIG Welding of Automotive Dissimilar Zn-Coated Advanced High Strength Steels Thin Sheets in Overlap Configuration

2016 ◽  
Vol 1138 ◽  
pp. 147-152
Author(s):  
Aurel Valentin Bîrdeanu
Keyword(s):  
High Performance ◽  
Pulsed Laser ◽  
Welding Process ◽  
High Strength Steels ◽  
High Strength ◽  
Industrial Applications ◽  
Cost Ratio ◽  
Hybrid Welding ◽  
Thin Sheets ◽  
Advanced High Strength Steels

The development and implementation into a high number of industrial applications of materials categorized as (Advanced) High Strength Steels (AHSS) due to their high performance per cost ratio is more and more present and this trend is also combined with the development and implementation of new joining technologies and processes, including laser-arc hybrid processes.The paper presents the results of applying Pulsed LASER-(micro)TIG hybrid welding process, for realizing overlap joints for Zn-coated (A)HSS materials in dissimilar configurations, joints that were presented as designed based on UltraLight Steel Auto Body (ULSAB) principles.The influence of main hybrid welding process parameters was investigated in order to establish if one can obtain joints with high values for the shear strength resistance for some of the actually used dissimilar steel combinations based on designs applied throughout ULSAB project and the autos built following these principles.

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