Abstract In the present work, the model alloy of AlSi10Mg was prepared by selective laser melting, and further annealed by two kinds of heat treatment regimes, i.e. A1 (300 °C/2h+ water quench) and A2 (535 °C/1h+ water quench + 190 °C/10 h+ furnace quench). The samples were investigated by XRD, SEM, EBSD, room temperature tensile and nanoindentation tests, to understand the effect of heat treatments on the phase constituents, microstructure, residual stress and mechanical properties of the laser additive manufactured AlSi10Mg alloy. The experimental results showed that, the heat treatment method of A1 is an effective heat treatment regime for eliminating the residual stress and improving the comprehensive mechanical properties for structural applications.

中文翻译：

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后处理热处理对选区激光熔化AlSi10Mg合金组织和性能的影响

摘要 本工作采用激光选区熔化制备 AlSi10Mg 模型合金，并通过两种热处理方式进一步退火，即 A1（300℃/2h+水淬）和 A2（535℃/1h+水淬） + 190 °C/10 h+ 炉淬）。通过XRD、SEM、EBSD、室温拉伸和纳米压痕测试对样品进行了研究，以了解热处理对激光增材制造的AlSi10Mg合金的相成分、微观结构、残余应力和机械性能的影响。实验结果表明，A1热处理方法是消除残余应力、提高结构应用综合力学性能的有效热处理方式。