Process and Properties of AlSi7Mg Alloy Fabricated by Laser Selected Melting
Author of the article:TANG Guangdong;FENG Tao;DUAN Guoqing;FENG Yunlong;GUO Donghai;WU Pengyue
Author's Workplace：Beijing Eplus 3D Tech.Co.,Ltd.,Beijing 102206,China
Key Words：selective laser melting AlSi7Mg process parameters properties
Abstract：By changing the laser power and scanning speed,the melting process and properties of AlSi7Mg alloy selective laser were studied.The influence law of different process parameters on the properties of formed samples was obtained.The results show that the relative density of the samples increases first and then decreases with the increase of laser power and scanning speed,and the relative density of the samples is up to 99.95%.With the increase of laser power,the tensile property of the sample increases first and then decreases.When the laser power is 350 W and the scanning speed is 1400 mm/s,the tensile strength and the yield strength of the sample is 423 MPa and 293 MPa,respectively.
