工艺与制造英文2024被引 17
材料挤出法3D打印连续碳纤维增强青铜基复合材料
3d printing of a continuous carbon fiber reinforced bronze-matrix composite using material extrusion
Mehrdad Mousapour, S. Siddharth Kumar, Jouni Partanen, Mika Salmi · Aalto University
摘要整理
本研究首次探索了采用成本效益型材料挤出（MEX）技术3D打印连续碳纤维（CCF）增强金属基复合材料的可行性。详细分析了青铜基复合材料的微观结构、力学性能和物理性能。研究结果表明，CCF显著阻碍了复合材料结构的致密化，导致青铜颗粒间存在大量孔隙。尽管孔隙率较高，但复合材料的导电率仍保持相对较高水平，说明CCF对复合材料导电性的负面影响有限。通过三点弯曲和拉伸试验进行了力学评估，揭示了该复合材料的优势与局限性。结果显示：屈服应力提高76%，极限抗拉强度增加20%，断裂应变延伸30%；但由于CCF形成的大量孔隙，弯曲强度下降23%。该研究为金属基复合材料的增材制造提供了新的工艺思路，同时揭示了纤维增强对致密性与力学性能的复杂影响机制。
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