Open AccessPreparation of Silicon Carbide Reinforced Aluminium Matrix Composites (SiC/Al) by Selective Laser Melting
Author(s) -
Zhang Jia-lian,
Faliang Li,
Qing Zhu,
Haijun Zhang
Publication year - 2019
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/678/1/012015
Subject(s) - materials science , silicon carbide , aluminium , selective laser melting , flexural strength , composite material , indentation hardness , relative density , microstructure , silicon , carbide , laser , laser power scaling , metallurgy , optics , physics
Silicon carbide reinforced aluminium matrix composites (AMCs) attracted a lot of attention owing to their low density, high specific strength and specific stiffness, and good wear resistance. Selective laser melting (SLM) technique has been widely used in the preparation of complex structural product with high precision, short production cycle and low cost. In this paper, silicon carbide (SiC) powders and aluminium (Al) powders were mixed together firstly with a weight ratio of 15:85 and then used to prepare AMCs by SLM technology. The effects of laser power on the microstructures, microhardness and flexural strength of formed AMCs were studied. The results show that the relative density, microhardness and flexural strength of the as-prepared samples can be improved with increasing the laser power. Meanwhile, the samples prepared at higher laser power exhibit lower friction coefficient.