The room temperature and high temperature tensile properties of Al–7Si–0.6Mg alloy prepared by wire arc additive manufacturing have been investigated. The results show that the strengthening phase gradually coarsens and the eutectic silicon phase does not grow and agglomerate, meanwhile, the tensile strength and yield strength of the alloy gradually decrease with the increase of temperature. The high-temperature properties of the alloy are better than that of cast alloy. With the increase of temperature, the fracture of the alloy changes from ductile transgranular fracture to intergranular fracture.

中文翻译：

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线材+电弧增材制造Al-7Si-0.6Mg合金高温力学性能研究

研究了电弧增材制造Al-7Si-0.6Mg合金的室温和高温拉伸性能。结果表明，随着温度的升高，强化相逐渐粗化，共晶硅相没有长大和团聚，同时合金的抗拉强度和屈服强度逐渐降低。该合金的高温性能优于铸造合金。随着温度的升高，合金的断裂由韧性穿晶断裂转变为沿晶断裂。