选区激光熔化成形Al-Si-Fe-Mn-Ni合金的高温蠕变行为

韩英, 吴雨航, 赵春禄, 张靖实, 李振民, 冉旭

High-Temperature Creep Behavior of Selective Laser Melting Manufactured Al-Si-Fe-Mn-Ni Alloy

HAN Ying, WU Yuhang, ZHAO Chunlu, ZHANG Jingshi, LI Zhenmin, RAN Xu

图6 SLM成形Al-Si-Fe-Mn-Ni合金在350 ℃、应力60 MPa条件下断口附近变形组织的TEM像

Fig.6 TEM images of the deformed microstructures near the fracture of SLMed Al-Si-Fe-Mn-Ni alloy under conditions of 350 oC and 60 MPa (White arrows represent dislocation cells, blue arrows represent Si phases, green arrows represent Al15(Fe, Mn, Ni)3Si2, black arrows represent dislocations; green, white, and blue areas are the corresponding high magnified images of IMC phase, Al matrix, and Si phase) (a) microscopic morphology and corresponding EDS results (b) BF image of the Al-Si eutectic structure and IMCs (c) interaction behavior of IMCs and dispersed Si phases with dislocations (d) high resolution TEM (HRTEM) image of IMCs (Inset shows SAED result of the IMC) (e) HRTEM image of the Si phase (Inset shows magnification of local interface structure) (f) SAED image of the Si phase (Inset shows atomic occupancy information)