Fibre laser welding of Zn-coated steel on Al alloy for next generation lightweight vehicles

2009 ◽  
Author(s):  
Hui-Chi Chen ◽  
Andrew J. Pinkerton ◽  
Lin Li ◽  
Anil T. Mistry
Keyword(s):  
Laser Welding ◽  
Fibre Laser ◽  
Al Alloy ◽  
Coated Steel ◽  
Next Generation

Gap-free fibre laser welding of Zn-coated steel on Al alloy for light-weight automotive applications

2011 ◽  
Vol 32 (2) ◽  
pp. 495-504 ◽  
Author(s):  
Hui-Chi Chen ◽  
Andrew J. Pinkerton ◽  
Lin Li ◽  
Zhu Liu ◽  
Anil T. Mistry
Keyword(s):  
Laser Welding ◽  
Fibre Laser ◽  
Al Alloy ◽  
Light Weight ◽  
Coated Steel ◽  
Automotive Applications

Study of Effect on Tensile Stress Test from Distortion of Fibre Laser Welded Ti6Al4V Using FEA

2011 ◽  
Vol 314-316 ◽  
pp. 1889-1894
Author(s):  
Yu Fan ◽  
Philip Shipway ◽  
Geoff Tansley ◽  
Zheng Chen
Keyword(s):  
Tensile Stress ◽  
Laser Welding ◽  
Tensile Test ◽  
Thin Plate ◽  
Stress Level ◽  
Continuous Wave ◽  
Stress Test ◽  
Welding Distortion ◽  
Fibre Laser

Distortion is one type of defect in the weld, which is troublesome for some reasons, especially in thin plate welding. Distortion was found in fibre laser welding processing for 0.7mm thickness Ti6Al4V plate. The purpose of this paper is to understand and evaluate the effect of distortion on stress level by FEA and tensile test. A group of 0.7mm Ti6Al4V plates welded using continuous wave fibre laser. FEA models were established for fibre laser welded Ti6Al4V in abaqus 6.7.

scholarly journals Inhibition Mechanism of Black Patina Development on a Hot Dip Zn-Al Alloy Coated Steel Sheet by Spraying Aqueous Solution of Co Salt

1990 ◽  
Vol 76 (3) ◽  
pp. 383-390
Author(s):  
Mitsuru KODA ◽  
Yukio UCHIDA ◽  
Masaru SUZUKI ◽  
Takenori DEGUCHI ◽  
Yusuke HIROSE
Keyword(s):  
Aqueous Solution ◽  
Steel Sheet ◽  
Inhibition Mechanism ◽  
Al Alloy ◽  
Coated Steel ◽  
Coated Steel Sheet

scholarly journals Black Patina Developed on Zn-Al Alloy Coated Steel Sheet

1986 ◽  
Vol 72 (8) ◽  
pp. 1013-1020 ◽  
Author(s):  
Yukio UCHIDA ◽  
Mitsuru KODA ◽  
Yasushi FUKUI ◽  
Yusuke HIROSE
Keyword(s):  
Steel Sheet ◽  
Al Alloy ◽  
Coated Steel ◽  
Coated Steel Sheet

Influence of Beam Power and Traverse Speed in Fibre Laser welding of Dual phase steel (590) on Depth of weld zone penetration, Microstructure and Hardness

2018 ◽  
Vol 5 (9) ◽  
pp. 17132-17138
Author(s):  
P.V.S. Lakshminarayana ◽  
Jai Prakash Gautam ◽  
P. Mastanaiah ◽  
G. Madhusudan Reddy ◽  
K. Bhanu Sankara Rao
Keyword(s):  
Laser Welding ◽  
Dual Phase Steel ◽  
Weld Zone ◽  
Traverse Speed ◽  
Fibre Laser ◽  
Beam Power ◽  
Dual Phase

scholarly journals The Interaction between Grains during Columnar-to-Equiaxed Transition in Laser Welding: A Phase-Field Study

Metals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1647
Author(s):  
Lingda Xiong ◽  
Chunming Wang ◽  
Zhimin Wang ◽  
Ping Jiang
Keyword(s):  
Laser Welding ◽  
Phase Field ◽  
Numerical Results ◽  
Model Alloy ◽  
Columnar Dendrite ◽  
Nucleation Density ◽  
Al Alloy ◽  
Nucleation Undercooling ◽  
Columnar To Equiaxed Transition ◽  
Equiaxed Grains

A phase-field model was applied to study CET (columnar-to-equiaxed transition) during laser welding of an Al-Cu model alloy. A parametric study was performed to investigate the effects of nucleation undercooling for the equiaxed grains, nucleation density and location of the first nucleation seed ahead of the columnar front on the microstructure of the fusion zone. The numerical results indicated that nucleation undercooling significantly influenced the occurrence and the time of CET. Nucleation density affected the occurrence of CET and the size of equiaxed grains. The dendrite growth behavior was analyzed to reveal the mechanism of the CET. The interactions between different grains were studied. Once the seeds ahead of the columnar dendrites nucleated and grew, the columnar dendrite tip velocity began to fluctuate around a value. It did not decrease until the columnar dendrite got rather close to the equiaxed grains. The undercooling and solute segregation profile evolutions of the columnar dendrite tip with the CET and without the CET had no significant difference before the CET occurred. Mechanical blocking was the major blocking mechanism for the CET. The equiaxed grains formed first were larger than the equiaxed grains formed later due to the decreasing of undercooling. The size of equiaxed grain decreased from fusion line to center line. The numerical results were basically consistent with the experimental results obtained by laser welding of a 2A12 Al-alloy.

Study of CW Nd-Yag laser welding of Zn-coated steel sheets

2006 ◽  
Vol 39 (2) ◽  
pp. 401-409 ◽  
Author(s):  
Rémy Fabbro ◽  
Frédéric Coste ◽  
Dominique Goebels ◽  
Mathieu Kielwasser
Keyword(s):  
Laser Welding ◽  
Coated Steel ◽  
Yag Laser ◽  
Steel Sheets
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