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采用激光选区熔化技术探索3D打印方法制备航空航天用Al Si10Mg铝合金的可行性,并对其性能适用性进行评价。研究发现:选区激光熔化技术成形Al Si10Mg合金组织致密,晶粒细小,力学性能优于传统铸造成形的零件。其中横向性能和纵向性能相当,横向塑性略优于纵向。使用国产SLM设备成形的Al Si10Mg合金退火态性能与德国EOS公司的官方性能数据相当,说明国内对于金属3D打印的研究和应用水平已达到国际先进水平。
The feasibility of 3D printing method for preparing Al Si10Mg aluminum alloy for aerospace is explored by using laser selective melting technology and its performance applicability is evaluated. The results show that the Al Si10Mg alloy formed by selective laser melting is dense, with fine grains and better mechanical properties than the traditional castings. Among them, horizontal performance and longitudinal performance are comparable, lateral plasticity is slightly better than vertical. The annealing performance of AlSi10Mg alloy formed by using domestic SLM equipment is comparable with the official performance data of EOS Company in Germany, which shows that the research and application of metal 3D printing in China has reached the international advanced level.