The application of an innovative high-pressure T6 treatment (HPT6) to additively manufactured AlSi10Mg alloy is reported in this paper. The aim of this treatment is to obtain the effective densification of the material together with the hardening effects typical of T6 heat treatment in one step. For comparison, a two-step treatment consisting of hot isostatic pressing followed by conventional T6 treatment was applied. Standard annealing and T6 treatment alone were also considered. The microstructural and mechanical properties of alloys treated under all the studied conditions were analyzed and their density was measured to quantify their densification. Although the application of high pressure hindered the diffusion mechanisms, and thus could limit the hardening effect of heat treatment, HPT6 treatment was found to ensure suitable mechanical properties and high densification. Furthermore, it required less time; therefore, it can be considered as a time-efficient process for high-performance applications.

本文报道了一种创新的高压T6处理（HPT6）在增材制造的AlSi10Mg合金中的应用。这种处理的目的是一步实现T6热处理所特有的材料的有效致密化和硬化效果。为了进行比较，采用了由热等静压和常规T6处理组成的两步​​处理。还考虑单独进行标准退火和T6处理。分析了在所有研究条件下处理的合金的微观结构和力学性能，并测量了其密度以量化其致密化。尽管高压的施加阻碍了扩散机制，因此可能会限制热处理的硬化效果，发现HPT6处理可确保合适的机械性能和高密度。此外，它需要更少的时间；因此，对于高性能应用程序，它可以被认为是省时的过程。