Abstract
Al–1.5 wt% Fe alloy was irradiate by Yb-fiber laser beam using the laser surface remelting (LSR) technique, generating weld fillets that covered the whole surface of the sample. The laser-treatment showed to be an efficient technology for corrosion resistance improvements. In this study, the finite element method was used to simulate the solidification processes by LSR technique. The method Multigrid was employed in order to reduce the CPU time, which is important to the viability for industrial applications. Multigrid method is a technique very promising of optimization that reduced drastically the CPU time. The result was highly satisfactory, because the CPU time has fallen dramatically in comparison when it was not used Multigrid method. To validate the result of numerical simulation with the experimental result was done the microstructural characterization of laser-treated layer by the optical microscopy and SEM techniques and however, that both results showing be consistent.
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Acknowledgments
The authors would like to acknowledge the financial support of the Brazilian research funding agencies: CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico, Brazil), FA (Fundação Araucária, Paraná, Brazil) and Dedalo (Development Laboratory of Lasers and Optics Applications) of CTA-IEAv, São José dos Campos, São Paulo, Brazil. The authors would also thank Luciano K. Araki for reviewing the text and for their valuable comments.
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Pariona, M.M., de Oliveira, F., Teleginski, V. et al. Simulation and optimization of Al–Fe aerospace alloy processed by laser surface remelting using geometric Multigrid solver and experimental validation. Heat Mass Transfer 52, 1037–1049 (2016). https://doi.org/10.1007/s00231-015-1619-y
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DOI: https://doi.org/10.1007/s00231-015-1619-y