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Handbook of Laser Welding Technologies by S Katayama

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13

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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