(中南工业大学非平衡材料科学与工程研究所， 长沙 410083)
摘 要: 研究了多层喷射共沉6066铝合金/SiC复合材料的半固态加工。半固态水淬后的金相组织表明，部分重熔后的喷射沉积组织具有适于半固态加工的搅溶性。不同温度的半固态模锻表明，材料能在较低压力下一步成形； SiC颗粒在加工后仍分布均匀， 与基体结合良好； 材料仍保持了较好的力学性能， T6态性能可达σb=385 MPa，σ0.2=342 MPa，δ=4.3%。
关键字: 喷射共沉 半固态加工 复合材料 搅溶性
（Non-Equilibrium Material Research Institute,Central South University of Technology, Changsha 410083, P. R. China）
Abstract:Semi-solid processing of multi-layer spray co-deposited 6066Al/SiCp composites was studied. By analyzing the water quenched microstructure, it was shown that the partly remelted spray-formed structure got thixotropy suitable for semi-solid processing. Semi-solid die-forging at different temperatures was conducted, the results showed that the material could be shaped under low pressure, SiC particles still uniformly distributed after processing and combined well with matrix alloy; the material maintained reasonable good mechanical properties.
Key words: spray co-deposition semi-solid process composites thixotropy
