铝合金熔滴复合电弧增材组织演化及外延生长特性

耿汝伟, 王林, 魏正英, 麻宁绪

Microstructure Evolution and Epitaxial Growth Characteristics of Droplet and Arc Deposition Additive Manufacturing for Aluminum Alloy

GENG Ruwei, WANG Lin, WEI Zhengying, MA Ninshu

图6 熔池底部与中部微观组织生长过程

Fig.6 Microstructure growth processes at the bottom (a-c) and the middle part (d-f) of molten pool (c— concentration, c∞—concentration far away from the interface, c / c∞—relative concentration, t—time, Δt—time step. One grid size is 0.216 μm) (a) t = 2500Δt (b) t = 8500Δt (c) t = 24500Δt (d) t = 2500Δt (e) t = 8500Δt (f) t = 19500Δt