Artur, V., Konstantin, B., Anton, K., Andrey, A., Marina, G.
(2020) Procedia CIRP, 94, pp. 310-313.
https://doi.org/10.1016/j.procir.2020.09.058
КРАТКОЕ ОПИСАНИЕ: The laser metal deposition process is characterized by multiple reheating with high heating and cooling rates, which vary during the deposition process and depend on the size and shape of the part. The development of the process parameters is an essential step in preparing for manufacturing of the real part. As a rule, small trial samples are used for this purpose. Difference in the temperature field during deposition of samples and real part leads to the different microstructure, properties and macrodefects. The aim of this work is to approximate the thermal histories of trial samples and real parts by varying process parameters. It was shown that by varying dwell time and interpass temperature it is possible to obtain similar thermal histories. Metallographic studies showed the absence of defects, the same microstructure and mechanical properties (microhardness) of the samples and real part.
https://www.sciencedirect.com/science/article/pii/S2212827120312439?via%3Dihub
(2020) Procedia CIRP, 94, pp. 310-313.
https://doi.org/10.1016/j.procir.2020.09.058
КРАТКОЕ ОПИСАНИЕ: The laser metal deposition process is characterized by multiple reheating with high heating and cooling rates, which vary during the deposition process and depend on the size and shape of the part. The development of the process parameters is an essential step in preparing for manufacturing of the real part. As a rule, small trial samples are used for this purpose. Difference in the temperature field during deposition of samples and real part leads to the different microstructure, properties and macrodefects. The aim of this work is to approximate the thermal histories of trial samples and real parts by varying process parameters. It was shown that by varying dwell time and interpass temperature it is possible to obtain similar thermal histories. Metallographic studies showed the absence of defects, the same microstructure and mechanical properties (microhardness) of the samples and real part.
https://www.sciencedirect.com/science/article/pii/S2212827120312439?via%3Dihub