选区激光熔化成形颗粒增强铝基复合材料综述（英文）

发布时间：2021-05-08 23:59

　　选区激光熔化（SLM）是一种新兴逐层增材制造技术,能够生成具有三维复杂结构的高性能构件。颗粒增强铝基复合材料（PAMCs）由于结合铝基体和增强相的优异特性在很多领域被认为是一种重要材料。基于SLM和PAMCs的综合优势,新型SLMPAMCs在近年来被陆续开发和研究。因而,本文总结当前有关SLMPAMCs的研究进展。首先,着重分析SLM20PAMCs的凝固行为。其次,对高性能SLM20PAMCs设计和制造中涉及的重要问题进行全面的讨论,其中包括增强相的选择、工艺参数对成形和微观结构的影响以及缺陷演变和相调控。第三,对SLM20PAMCs的性能和增强机制进行系统讨论。最后,对高性能SLM20PAMCs未来发展方向提出建设性的观点。 

【文章来源】：Transactions of Nonferrous Metals Society of China. 2020,30(08)EISCICSCD

【文章页数】：34 页

【文章目录】：
1 Introduction
2 Solidification behavior of SLM PAMCs
    2.1 Solidification theory of selective laser melting
    2.2 Diffusion and interaction of SLM PAMCs during laser melting
    2.3 Heterogeneous nucleation,equiaxed growth and grain refinement during processing of SLM PAMCs
3 Current issues of SLM PAMCs
    3.1 Selection of reinforcements
    3.2 Feedstock preparation methods
    3.3 Effect of parameters on processing and microstructure
    3.4 Defect evolution
        3.4.1 Defects generated from rapid solidification
        3.4.2 Defects caused by ball milling
        3.4.3 Defects generated from diffusion and reaction
    3.5 Phase control
4 Performance of current PAMCs
    4.1 SLM CP-Al matrix composites
    4.2 SLM Al-Si matrix composites
    4.3 SLM Al-Cu matrix composites
5 Prospective viewpoints
    5.1 Pre-design of constituent of SLM PAMCs
    5.2 Preparation of powder feedstock of SLM PAMCs
    5.3 Theoretical breakthrough of forming mechanism of SLM PAMCs
    5.4 Strengthening and fracture mechanism of SLM PAMCs
    5.5 Investigation on more chemical/physical properties of SLM PAMCs



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