Open AccessEffect of part orientation on temperature stresses in the structure of a material during selective laser melting
Author(s) -
A. A. Voznesenskaya,
Д. А. Кочуев,
А. С. Разносчиков,
А. В. Жданов,
V. P. Morozov
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/896/1/012131
Subject(s) - selective laser melting , materials science , laser , machining , orientation (vector space) , thermal , scanning electron microscope , composite material , mechanical engineering , optics , metallurgy , geometry , microstructure , mathematics , engineering , physics , thermodynamics
In this paper, we consider the problems of thermal stress during selective laser melting. Using scanning electron microscopy, the average particle size and shape of the AlSi10Mg powder alloy were revealed. Details of complex geometric shapes have been grown by various construction strategies using the selective laser melting method. In the first case, the influence of supporting structures on the geometric shape of the part was considered. An optimal set of supporting structures has been developed in order to reduce the time spent on machining after selective laser melting, as well as to exclude supports in hard-to-reach cavities. In the second case, the location of the part on the construction platform was considered. It was found that changing the orientation of the parts allows to reduce the volume and number of supporting structures. The results are obtained on thermal stresses occurring in the process of growing a part by selective laser melting.