![]() The stress analysis of the finite element model during the cooling stage was then validated by the spatially-resolved X-ray diffraction measurements of residual stresses in the clad layer. The thermal analysis of the finite element model of the laser cladding process was first validated by the time-resolved temperature measurements using thermocouples placed on the mild steel surface near the clad layer. In this study, a three-dimensional uncoupled thermo-mechanical finite element model was developed to predict (a) the evolution of the temperature field in a direct diode laser hot-wire multi-track cladding process and (b) associated thermally induced residual stress distribution in laser-cladded 316L stainless steel coatings on the A36 mild steel substrate. Large residual stresses in a laser-cladded surface coating over a metal part are detrimental to its mechanical integrity and fatigue life.
0 Comments
Leave a Reply. |