王瀚樟,温帅帅,曹少凯,贾楠楠,潘利文

本文以Al-Si-Cu-Mg合金和粉煤灰空心微珠为原材料，采用重力渗透铸造工艺制备了粉煤灰/铝基复合泡沫材料，并研究了渗透温度对铝基复合泡沫显微组织和压缩吸能性能的影响。结果表明，复合泡沫中存在α-Al、Si、Al2O3、SiO2、Al2Cu、Ti7Al5Si12、Q-AlSiMnFe和AlSiFe相。渗透温度对Si相和Al2Cu相的形貌产生较大影响。随着渗透温度的升高，复合泡沫孔隙率不断降低，但复合泡沫的抗压强度和吸能能力逐渐增大，渗透温度为810℃时抗压强度、吸能能力和比吸能均为最高，分别达到了124.33 MPa， 52.99 MJ/m3和26.76 kJ/kg。压缩吸能性能远高于传统的铝泡沫材料，表明所开发的铝基复合泡沫作为一种新型轻质吸能减振材料有望用于一些吸能需求较高的高速冲击碰撞场合。

重力渗透温度；粉煤灰/铝基复合泡沫；显微组织；压缩性能；吸能性能

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