选区激光熔融Al-30Si合金的微观组织和性能

秦艳利, 赵光普, 张昊, 倪丁瑞, 肖伯律, 马宗义

Microstructure and Properties of Al-30Si Alloy Produced by Selective Laser Melting

QIN Yanli, ZHAO Guangpu, ZHANG Hao, NI Dingrui, XIAO Bolv, MA Zongyi

表2 常用光机结构件材料的比刚度

Table 2 Specific stiffness of commonly used materials for optical instruments

Materials Density / g·cm-3 Elastic modulus / GPa Specific stiffness / m2·s-2 Al[25] 2.70 68.00 25.19 TC4[25] 4.40 114.00 25.91 Mg-Al alloy[25] 1.80 40.00 22.22 AlSi10Mg[26] 2.62 71.00 27.10 Al-30Si in this study 2.53 89.00 35.18