The advantages of metal powder in the Polylactic Acid (PLA) matrix for strengthening have attracted interest among the researchers. An attempt was made to use the advantages of copper (Cu) as the reinforcing component in the PLA matrix. After a few series of exams, copper with weight percentages of 12 in the PLA matrix was reported to be an appropriate composition. The PLA-Cu composite filament with 12% Cu was successfully manufactured using hot extrusion. 1.75–mm-diameter extracted composite filament was built according to the ASTM standard for shear and impact testing under various Fused Deposition Model (FDM) conditions. The effects of nozzle temperature, bed temperature, and layer height on different printing conditions were examined. The effect of the FDM parameters during impact load conditions was in the order of the nozzle temperature, bed temperature, and layer height. The effect of FDM machining conditions on the shear depends primarily on the thickness of the layer. The shear test is minimally influenced by the extrusion temperature. Analysis of the topography of the fracture surface reveals that a fracture surface is a form of plastic deformation and that the crack initiated from the layer limit. The dislocations of the Cu particles through the slide advances toward the failure. An elevated extrusion temperature reduces ductility. Different surface profile settings are analyzed using 3D optical microscopy.

金属粉末在聚乳酸 (PLA) 基体中的强化优势引起了研究人员的兴趣。尝试利用铜 (Cu) 作为 PLA 基质中的增强组分的优势。经过几个系列的测试，据报道 PLA 基质中重量百分比为 12 的铜是合适的成分。使用热挤压成功制造了含 12% Cu 的 PLA-Cu 复合长丝。1.75 毫米直径的提取复合长丝是根据 ASTM 标准制造的，用于在各种熔融沉积模型 (FDM) 条件下进行剪切和冲击测试。检查喷嘴温度、床温和层高对不同印刷条件的影响。FDM 参数在冲击载荷条件下的影响按喷嘴温度、床温和层高。FDM 加工条件对剪切的影响主要取决于层的厚度。剪切试验受挤出温度的影响最小。对断裂面形貌的分析表明，断裂面是塑性变形的一种形式，裂纹是从层限开始的。Cu 粒子的位错通过滑动向失效方向发展。升高的挤出温度会降低延展性。使用 3D 光学显微镜分析不同的表面轮廓设置。对断裂面形貌的分析表明，断裂面是塑性变形的一种形式，裂纹是从层限开始的。通过滑动的 Cu 颗粒的位错向着失效的方向发展。升高的挤出温度会降低延展性。使用 3D 光学显微镜分析不同的表面轮廓设置。对断裂面形貌的分析表明，断裂面是塑性变形的一种形式，裂纹是从层限开始的。Cu 粒子的位错通过滑动向失效方向发展。升高的挤出温度会降低延展性。使用 3D 光学显微镜分析不同的表面轮廓设置。