Copper based alloys are promising materials for electrical and thermal devices. In this respect, the use of laser powder bed fusion (LPBF) allows the realization of 3D complex structures, possibly enhancing the functional performances of such devices. LPBF also induces refined microstructures and build-up of residual stresses, due to the rapid solidifications and high cooling rate. In this work a CuCrZr alloy was manufactured by LPBF and a process feasibility window was defined. The effect of a heat treatment, consisting of solution annealing and artificial aging, on the microstructure, tensile and thermal properties was evaluated. Moreover, particular attention was addressed to the effect of the building direction on the thermal behaviour.

It was found that thermal conductivity is improved by the heat treatment and that thermal conductivity resulted anisotropic, being higher in the growth direction.

铜基合金是用于电气和热设备的有前途的材料。在这方面，激光粉末床熔合 (LPBF) 的使用可以实现 3D 复杂结构，可能会增强此类设备的功能性能。由于快速凝固和高冷却速率，LPBF 还可以细化微观结构并产生残余应力。在这项工作中，CuCrZr 合金由 LPBF 制造，并定义了工艺可行性窗口。评估了热处理（包括固溶退火和人工时效）对显微组织、拉伸和热性能的影响。此外，还特别关注了建筑方向对热性能的影响。

发现通过热处理提高了热导率，并且热导率导致各向异性，在生长方向上更高。