喷射沉积 6061/SiCp 复合材料的组织与拉伸性能
来源期刊：中南大学学报(自然科学版)1998年第5期
论文作者：孙亦 张豪 陈振华
文章页码：63 - 65
关键词：喷射共沉积;6061 铝合金;碳化硅颗粒;显微组织;拉伸性能
Key words：spray co-deposition; 6061 Al alloy; SiC particles; microstructure; tensile property
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：σb 439MPa，σ0．2 409MPa，δ10．4%，E120GPa.
Abstract: SiCp 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: σb 430 MPa; σ0.2 409 MPa; δ 10.4%; E 120 GPa.
