The mechanical properties, physical properties and electrochemical behavior of metal components produced by selective laser melting can be influenced by the relative density and building direction. To this end, the optimization of the building process was conducted by identifying the influence of process parameters on the relative density and determining the ideal combination of parameters using the Box–Behnken design response surface methodology to achieve a relative density of 99.303 pct. With the ideal process parameters, material strength, thermal, and electrochemical performance were evaluated in a series of experiments. Anisotropic characteristics were displayed due to the differences in build-direction, microstructural features, and phase composition. The 0 deg possessed the highest tensile strength measured to be 1263.03 ± 8.71 MPa, while the 45 deg demonstrated the highest ductility with an elongation of 13.21 ± 0.34 pct. Thermal expansion was governed by the heat treatment process, such that anisotropic traits were eliminated after solution treatment. Strip melt tracks on the X–Y plane differed from the strip and arcuate melt tracks observed in the X–Z and Y–Z planes, leading to significant deficiencies in electrochemical reactance with an open circuit potential of − 645.8 mV in comparison to the latter measured at − 397.7 and − 396.7 mV, respectively.

通过选择性激光熔化产生的金属部件的机械性能，物理性能和电化学行为会受到相对密度和构造方向的影响。为此，通过确定过程参数对相对密度的影响并使用Box–Behnken设计响应面方法确定参数的理想组合来进行建筑过程的优化，以实现99.303 pct的相对密度。通过理想的工艺参数，通过一系列实验评估了材料强度，热性能和电化学性能。由于构造方向，微观结构特征和相组成的差异，显示出各向异性特征。0度具有最高的拉伸强度，测得值为1263.03±8.71 MPa，而45度显示了最高的延展性与13.21±0.34 pct的伸长率。热膨胀受热处理工艺控制，因此固溶处理后消除了各向异性特征。X–Y平面上的带状熔体轨迹不同于在X–Z和Y–Z平面上观察到的带状和弧形熔体轨迹，导致电化学反应的显着缺陷，与后者相比，开路电势为− 645.8 mV分别在− 397.7和− 396.7 mV下测量。