In laser cladding with pre-placed powd er, a trial-and-error approach is widely adopted to acquire the suitable processing parameters. The shortcomings of such an approach are obvious: long investigation times, high costs, and more importantly, the difficulty of making predictions. In this study, a numerical approach based on the finite element method has been developed to simulate the temperature profile of laser cladding with pre-placed metal powders. The FEM model is capable of simulating the 3-D thermal field of the cladding material under a moving heat source. Verification experiments were conducted by the laser cladding of Al-12%Si alloy on ZM51 magnesium alloy, using a high-power Nd-YAG laser. The results show that the model can be employed to determine the appropriate processing parameters for achieving good interfacial bonding between the clad layer and the substrate.
An FEM approach for the thermal analysis of laser cladding with pre-placed powder
L. F. Guo, T. M. Yue, H. C. Man; October 14–18, 2018. "An FEM approach for the thermal analysis of laser cladding with pre-placed powder." Proceedings of the International Congress on Applications of Lasers & Electro-Optics. ICALEO® 2003: 22nd International Congress on Laser Materials Processing and Laser Microfabrication. Orlando, FL, USA. (pp. 703). ASME. https://doi.org/10.2351/1.5060073
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