Fabrication of multi-material samples from nickel and copper alloys by selective laser melting: Computer simulation and experimental results.

The manufacture of multi-material products by layer-by-layer synthesis involves many issues related to both technological parameters and equipment preparation, as well as warping and internal stresses of manufactured parts. This article shows the possibility of modeling the process of selective laser melting in terms of the manufacture of multi-material parts on the example of specimen of nickel alloy VZh159 and copper alloy BrHCRV. The results of numerical simulation of the printing process were verified on the basis of the fabricated specimens. It was found that the obtained simulation results are indicative, however, they do not quite accurately describe the deformation of the specimen obtained by the SLM method, which is due to the imperfection of the chosen calculation algorithms. For the possibility of further use of numerical computer simulation of the process of growing multi-material specimens by the SLM method, it is necessary to implement a continuous simulation process, without transition between parts of the specimen, when one part begins to be considered by the system as a substrate. [ABSTRACT FROM AUTHOR]