【摘要】 通过ＳＥＭ、ＴＥＭ及硬度和拉伸性能测试对ＳｉＣＷ／６０６１Ａｌ复合材料正挤压管材和反挤压杯的组织和性能进行了观察和测定。研究结果表明，挤压使ＳｉＣＷ发生了定向排列和折断，挤压温度是影响挤压件组织和性能的重要因素，挤压件硬度分布不均匀是由于金属流动不均匀所致，挤压后固溶时效处理能够大幅度地提高复合材料的抗拉强度更多还原

【Abstract】 In this work, the microstructures of hotextruded tubes and cuplike parts were observed by SEM and TEM. The Vickershardness and tensile properties were investigated. The results indicate that SiC whiskers tend to break and distribute directionally. The extrusion temperature is an important factor in final microstructure and properties of extruded parts. It is also shown that the unevenly distributed hardness is caused by the uneven flow of metals. An aging treatment of extruded parts will greatly increase the tensile strength.更多还原