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。
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.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1999年第2期67-72,共6页
Acta Materiae Compositae Sinica
关键词
复合材料
挤压
组织
性能
碳化硅晶须
铝基
silicon carbide whisker, metal matrix composite, hotextrusion, microstructure, properties