Residual stress and distortion in laser welding
H. Murakawa, JWRI, Osaka University, Japan
Abstract:
Typical examples of welding distortion and residual stress are presented first and the mechanism by which they are produced is explained using a simple mechanical model. Further, influential factors on various types of welding deformations and the distribution of residual stress are discussed based on the temperature distribution and the restraint. To understand the welding distortion and the residual stress associated with laser welding, typical examples selected from published articles are presented.
Key words
residual stress
distortion
transverse shrinkage
angular distortion
longitudinal shrinkage
buckling
thermal cycle
mismatch ...
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