【摘要】 采用多层喷射共沉积法制备了６０６１铝合金／１０％ＳｉＣ颗粒增强复合材料，对其显微组织和拉伸性能进行了研究．结果表明，沉积坯组织为细小、均匀的等轴晶，增强相颗粒分布均匀，基体与增强相颗粒间没有发生界面反应．增强相颗粒加速了沉淀相析出并明显缩短峰时效时间，沉积坯热挤压后经５ｈ时效即可达到峰时效状态，此时力学性能为：σｂ４３９ＭＰａ，σ０．２４０９ＭＰａ，δ１０．４％，Ｅ１２０ＧＰａ．更多还原

【Abstract】 SiC p composites were produced by multi layer spray Co deposition technology. Its microstructure and tensile properties were investigated. The results show that, the as deposited preform is composed of very fine equiaxed grains; the distribution of the reinforcement particles is homogeneous; chemical reactions at the metal/reinforcement particles interface are avioded. The reinforcement particles enhance precipitation and significantly reduce the time to attain peak age; after extrusion, the materials get to the peak age condition in 5 h and show mechanical properties as: σ b 430 MPa; σ 0 2 409 MPa; δ 10 4%; E 120 GPa.更多还原