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首页> 外文期刊>Materials Letters >Microstructure and mechanical properties of wire + arc additively manufactured Al-Mg-Si aluminum alloy
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Microstructure and mechanical properties of wire + arc additively manufactured Al-Mg-Si aluminum alloy

机译：丝+电弧增材制造的Al-Mg-Si铝合金的组织和力学性能。

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摘要

Al-3.1Mg-2.0Si ternary aluminum alloy thin wall component was built with double - wire + arc additive manufacturing process by synchronously feeding ER5087 (Al-5Mg) and ER4043 (Al-5Si) wires. The microstructure and mechanical properties were tested and studied. The results showed the main existed phase were alpha-Al, Mg2Si and Al9Si. Al-Mg-Si eutectics (alpha-Al + Mg2Si + Al9Si) distributed along the grain boundary in a-Al matrix. The micro hardness was about 54.7HV. The ultimate tensile strength, yield strength and elongation of the deposit in horizontal direction were 176 MPa, 76.6 MPa and 11.4%, respectively. The properties in vertical direction were slightly lower. An isotropic feature of the tensile properties was exhibited in the deposit. (C) 2018 Elsevier B.V. All rights reserved.
机译：通过同步送入ER5087（Al-5Mg）和ER4043（Al-5Si）焊丝，采用双丝+电弧增材制造工艺构建了Al-3.1Mg-2.0Si三元铝合金薄壁构件。对组织和力学性能进行了测试和研究。结果表明，主要存在的相为α-Al，Mg2Si和Al9Si。 Al-Mg-Si共晶（α-Al+ Mg2Si + Al9Si）沿a-Al基体中的晶界分布。显微硬度为约54.7HV。沉积物的极限抗拉强度，屈服强度和水平方向的伸长率分别为176 MPa，76.6 MPa和11.4％。垂直方向的性能略低。沉积物中表现出拉伸性能的各向同性特征。 （C）2018 Elsevier B.V.保留所有权利。

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