發(fā)布時(shí)間：2021-05-08 23:59

　　選區(qū)激光熔化（SLM）是一種新興逐層增材制造技術(shù),能夠生成具有三維復(fù)雜結(jié)構(gòu)的高性能構(gòu)件。顆粒增強(qiáng)鋁基復(fù)合材料（PAMCs）由于結(jié)合鋁基體和增強(qiáng)相的優(yōu)異特性在很多領(lǐng)域被認(rèn)為是一種重要材料。基于SLM和PAMCs的綜合優(yōu)勢,新型SLMPAMCs在近年來被陸續(xù)開發(fā)和研究。因而,本文總結(jié)當(dāng)前有關(guān)SLMPAMCs的研究進(jìn)展。首先,著重分析SLM20PAMCs的凝固行為。其次,對高性能SLM20PAMCs設(shè)計(jì)和制造中涉及的重要問題進(jìn)行全面的討論,其中包括增強(qiáng)相的選擇、工藝參數(shù)對成形和微觀結(jié)構(gòu)的影響以及缺陷演變和相調(diào)控。第三,對SLM20PAMCs的性能和增強(qiáng)機(jī)制進(jìn)行系統(tǒng)討論。最后,對高性能SLM20PAMCs未來發(fā)展方向提出建設(shè)性的觀點(diǎn)。 

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

【文章頁數(shù)】：34 頁

【文章目錄】：
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



本文編號：3176224