粉末粒径对AlSi10Mg合金选区激光熔化成形的影响

王孟, 杨永强, Trofimov Vyacheslav, 宋长辉, 周瀚翔, 王迪

Effects of Particle Size on Processability of AlSi10Mg Alloy Manufactured by Selective Laser Melting

WANG Meng, YANG Yongqiang, Trofimov Vyacheslav, SONG Changhui, ZHOU Hanxiang, WANG Di

表2 DEM模型使用参数及参数范围

Table 2 Used parameters and variable range in DEM model

Parameter Unit Value Variable range Particle density ρ kg·m-3 2680 - Poisson's ratio ɛ 0.3 - Young's modulus E MPa 750 - Rolling friction coefficient μr 0.09 - Sliding friction coefficient μs 0.6 0.4-0.8 Restitution coefficient rs 0.64 - Surface energy density γ mJ·m-2 1.2 0-15 L1 mm 2 - L2 mm 4 2-6 W 10D50 2D50-10D50 H0 5D50 1D50-5D50 L3 mm 1 - V mm·s-1 50 -