scholarly journals Laser Welding of Thin Sheet Magnesium Alloys

Nd YAG Laser ◽  
10.5772/35370 ◽  
2012 ◽  
Author(s):  
Mahadzir Ishak ◽  
Kazuhiko Yamasaki ◽  
Katsuhiro Maekaw
Keyword(s):  
Laser Welding ◽  
Magnesium Alloys ◽  
Thin Sheet

Morphology of Edge Cracks of Rolled Magnesium Alloy Sheet

2014 ◽  
Vol 922 ◽  
pp. 469-474 ◽  
Author(s):  
Sho Manabe ◽  
Hiroshi Utsunomiya ◽  
Tetsuo Sakai ◽  
Ryo Matsumoto
Keyword(s):  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
High Speed ◽  
Heating Temperature ◽  
Thin Sheet ◽  
Contact Length ◽  
Alloy Sheet ◽  
Different Temperatures ◽  
Edge Cracks ◽  
Critical Reduction

Magnesium alloys show low deformability at low temperature because of hcp structure and inactiveness of basal slip. Manufacturing of thin sheet is difficult in industries. Some approaches, such as small-draft multi-pass rolling, intermediate annealing, isothermal rolling and high-speed rolling were proposed to overcome the deformability. However, small edge cracks are still formed on the sheet. In this study, rolling speed of 1000m/min was employed to warm-roll AZ31B magnesium alloy in a single pass at different temperatures. The edge cracks formed after the rolling were classified into three main groups: minor, regular and zigzag edge cracks. ‘Crack contact length’ are introduced to explain the morphology of edge cracks. The results show that the critical reduction for crack initiation depends on the pre-heating temperature. The spacing between edge cracks increases linearly with the crack contact length regardless of roll diameter, speed and reduction. It is suggested that this approach is useful to understand the formation mechanism of edge cracks and to evaluate the rollability of magnesium alloys.

Effect of Shielding Gas on Joint Morphology and Mechanical Property of Fiber Laser Welding of A304 Thin Sheet

2017 ◽  
Vol 54 (1) ◽  
pp. 011404
Author(s):  
樊 宇 Fan Yu ◽  
李沛智 Li Peizhi ◽  
柳岸敏 Liu Anmin ◽  
陈 正 Chen Zheng ◽  
郭 跃 Guo Yue
Keyword(s):  
Mechanical Property ◽  
Laser Welding ◽  
Fiber Laser ◽  
Thin Sheet ◽  
Shielding Gas ◽  
Fiber Laser Welding ◽  
Joint Morphology

Correlation between laser welding sequence and distortions for thin sheet structures

2016 ◽  
Vol 22 (2) ◽  
pp. 150-156 ◽  
Author(s):  
K. Fahlström ◽  
O. Andersson ◽  
A. Melander ◽  
L. Karlsson ◽  
L.-E. Svensson
Keyword(s):  
Laser Welding ◽  
Thin Sheet ◽  
Welding Sequence

Laser Welding of AZ91 and WE43 Magnesium Alloys for Automotive and Aerospace Industries

2001 ◽  
Vol 3 (7) ◽  
pp. 504-507 ◽  
Author(s):  
M. Dhahri ◽  
J. E. Masse ◽  
J. F. Mathieu ◽  
G. Barreau ◽  
M. Autric
Keyword(s):  
Laser Welding ◽  
Magnesium Alloys

A review of laser welding techniques for magnesium alloys

2006 ◽  
Vol 171 (2) ◽  
pp. 188-204 ◽  
Author(s):  
X. Cao ◽  
M. Jahazi ◽  
J.P. Immarigeon ◽  
W. Wallace
Keyword(s):  
Laser Welding ◽  
Magnesium Alloys

scholarly journals Flow characteristics of the molten pool in pulsed laser welding of thin sheet with filler wire

2019 ◽  
Vol 50 (3) ◽  
pp. 034208
Author(s):  
ZhuJi JIN ◽  
DongSheng CHAI ◽  
DongJiang WU ◽  
GuangYi MA ◽  
MingKai LEI ◽  
...  
Keyword(s):  
Laser Welding ◽  
Molten Pool ◽  
Thin Sheet ◽  
Flow Characteristics ◽  
Pulsed Laser ◽  
Filler Wire ◽  
Pulsed Laser Welding
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