计算辅助高性能增材制造铝合金开发的研究现状与展望

高建宝, 李志诚, 刘佳, 张金良, 宋波, 张利军

Current Situation and Prospect of Computationally Assisted Design in High-Performance Additive Manufactured Aluminum Alloys: A Review

GAO Jianbao, LI Zhicheng, LIU Jia, ZHANG Jinliang, SONG Bo, ZHANG Lijun

图7 一种用于SLM的新型无裂纹Ti改性Al-Cu-Mg合金设计流程[21]

Fig.7 A novel crack-free Ti-modified Al-Cu-Mg alloy design flow for SLM[21] (a) vertical section of Al-2.25Cu-1.8Mg-xTi alloys (mass fraction, %) (b) Tvs (fS)1/2 curves of Al-Cu-Mg-xTi alloys with Ti contents ranging from 0 to 2% (c) calculated Qtrue values in Ti/Al-Cu-Mg alloys for constrained L→α-Al solidification with Ti contents ranging from 0 to 2% (Metastable solidification conditions are used at higher values of Ti content to suppress the formation of intermetallic phases) (d) schematic of cracking mechanism in the Al-Cu-Mg alloy (e, f) SEM image (e) and inverse pole figure (IPF) (f) showing the microstructure in the cracked zone of Al-Cu-Mg alloy (g, h) SEM image (g) and IPF (h) of Ti/Al-Cu-Mg alloy consisting of fine equiaxed grains without cracks