The effect of typical heat treatments (annealing, stress relieving) on laser formed components in terms of the geometry and metallurgy was investigated, seeking to confirm that the laser formed geometry is retained. The results reveal that no significant changes in the geometry of the samples were observed. The bend angle was maintained throughout with only small changes in magnitude. In every case the changes in angle can be attributed to the change in distortion level in the samples. This distortion is caused by residual stresses in the samples initially from the laser forming process and latterly by the quenching process. In the annealing process it was observed that the residual stresses are relaxed and a removal of induced distortion is observed. This is the likely reason for any changes in the geometry and therefore bend angle of a laser formed part after the first heat treatment and not a negation of the laser formed region. Though the effects of post forming heat treatments on 2D laser formed parts are minimal this could be a cumulative effect in 3D laser forming with the increase of irradiation lines.
Effect of post forming heat treatments on laser formed components
2008
8 Seiten, 3 Bilder, 6 Tabellen, 6 Quellen
Aufsatz (Konferenz)
Englisch
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