Microstructure and properties of a nano-ZrO2-reinforced AlSi10Mg matrix composite prepared by selective laser melting
Microstructure and properties of a nano-ZrO2-reinforced AlSi10Mg matrix composite prepared by selective laser melting
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DOI：
10.1016/j.msea.2022.142792
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发表时间：
2022-02
期刊：
影响因子：
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通讯作者：
Shuzhe Zhang;Zhen Chen;Pei Wei;Ke Huang;Y. Zou;Sen Yao;Min Li;B. Lu;J. Xing
中科院分区：
文献类型：
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作者：
Shuzhe Zhang;Zhen Chen;Pei Wei;Ke Huang;Y. Zou;Sen Yao;Min Li;B. Lu;J. Xing
采用高速均质机制备了纳米ZrO 2增强AlSi 10 Mg复合材料，并利用选区激光熔化（SLM）技术制备了样品。研究了ZrO 2对ZrO 2/AlSi 10 Mg复合材料的显微组织、晶体学织构和力学性能的影响。结果表明：ZrO 2颗粒分布均匀，与AlSi 10 Mg基体界面结合良好。ZrO 2的加入减少了大晶粒的形成，对晶粒细化有重要作用。小角度晶界和（001）晶向得到显著增强。与AlSi 10 Mg相比，ZrO 2/AlSi 10 Mg复合材料具有更优异的上级力学性能，其中最高硬度为139 HV（平均提高10.3%），抗拉强度为478.6 MPa，伸长率为10.6%，分别提高13.5%和41%。
In this study, nano-ZrO2-reinforced AlSi10Mg composites were prepared using a high-speed homogenizer and samples were fabricated by selective laser melting (SLM) technique. The effects of ZrO2on the microstructures, crystallographic textures and mechanical properties of the ZrO2/AlSi10Mg composites were studied. The results show that ZrO2particles were distributed uniformly and had good interfacial bonding with the AlSi10Mg matrix. The incorporation of ZrO2reduced the formation of large crystalline grains and had an important role in grain refinement. The small-angle grain boundaries and (001) crystal orientation were greatly enhanced. Compared with AlSi10Mg, ZrO2/AlSi10Mg had superior mechanical properties, including the highest hardness strength of 139 HV (an average increase of 10.3%), a tensile strength of 478.6 MPa and an elongation of 10.6% (increases of 13.5% and 41%, respectively).