工艺与制造英文2020被引 8
连续纤维增强低熔点合金基复合材料的3D打印：力学性能与微观结构
3D Printing of Continuous Fiber Reinforced Low Melting Point Alloy Matrix Composites: Mechanical Properties and Microstructures
Xin Wang, Xiaoyong Tian, Lixian Yin, Dichen Li · Xi'an Jiaotong University
摘要整理
提出了一种制造连续纤维增强金属基复合材料（CFRMMC）的新型3D打印工艺。该工艺不同于利用喷嘴内压力将基体与纤维结合的聚合物基复合材料3D打印过程，而是通过利用原材料的润湿性和毛细作用将金属基体与连续纤维结合，形成致密的内部结构和良好的纤维-基体界面。采用Pb50Sn50合金丝和改性连续碳纤维打印CF/Pb50Sn50复合材料。研究了复合材料试样的力学性能，极限抗拉强度达到236.7 MPa，是Pb50Sn50合金的7.1倍。对断裂形貌和界面微观结构进行了观察分析，讨论了力学性能与界面反应的关系。通过优化工艺参数，打印了多种复合材料零件，验证了该工艺具有成本低、制造周期短、复杂结构成形灵活等优势。
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