Nikonov, A.Y.; Lychagin, D.V.; Bibko, A.A.; Novitskaya, O.S. Aluminum Bronze Crystallization on Deformed Base during Electron Beam Additive Manufacturing. Metals2023, 13, 1012.
Nikonov, A.Y.; Lychagin, D.V.; Bibko, A.A.; Novitskaya, O.S. Aluminum Bronze Crystallization on Deformed Base during Electron Beam Additive Manufacturing. Metals 2023, 13, 1012.
Nikonov, A.Y.; Lychagin, D.V.; Bibko, A.A.; Novitskaya, O.S. Aluminum Bronze Crystallization on Deformed Base during Electron Beam Additive Manufacturing. Metals2023, 13, 1012.
Nikonov, A.Y.; Lychagin, D.V.; Bibko, A.A.; Novitskaya, O.S. Aluminum Bronze Crystallization on Deformed Base during Electron Beam Additive Manufacturing. Metals 2023, 13, 1012.
Abstract
To obtain a given structure in 3D building-up modes, it is necessary to use optimal surfacing modes that determine the amount of heat input in local areas. For this purpose, aluminum bronze was surfacing onto a deformed base and the structure and its characteristics in the surfacing and heat-affected zones were studied by the EBSD method. The heterogeneity of the formation of the structure in each selected zone is established, which indicates the heterogeneity of heat input in local areas of the material in one mode of surfacing. For typical cases of crystallization, a molecular dynamics simulation of crystallization processes with different heat input to the base with characteristics specified based on experimental data was carried out. It has been established that the amount of heat input determines the degree of melting and the inherited defectiveness of growing crystals. The formation of misorientation boundaries and crystallization centers of new grains is determined by the conditions of joint growth of grains with given crystallographic parameters of the computational model. Numerical calculations agree with the experimentally observed results.
Keywords
additive manufacturing; electron beam melting; aluminum bronze; molecular dynamics simulation; crystallization, electron backscatter diffraction
Subject
Chemistry and Materials Science, Metals, Alloys and Metallurgy
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
