摘要
分析比较了原始态碳化硅颗粒与莫来石纤维混杂增强硬铝和氧化态碳化硅颗粒与莫来石纤维混杂增强硬铝复合材料的微观结构与力学性能.结果发现,后者的弯曲强度明显低于前者,微观分析表明,后者发生界面反应生成脆性化合物并使基体中的时效强化相减少是其强度降低的原因.
The mechanical properties of as received SiC particles and short mullite fibers reinforced 2024Al composite were compared with that of oxidized SiC particles and short mullite fibers reinforced 2024Al composite. It is found that the bending strength of the latter is obviously lower than that of the former. Microstructure analysis indicates that the strong interface reaction in latter, which results in the formation of brittle phase at the interface and the decrease of aging strengthening phase in the matrix, is responsible for the decrease of the strength.
出处
《华中理工大学学报》
CSCD
北大核心
1998年第7期94-96,共3页
Journal of Huazhong University of Science and Technology
基金
国家自然科学基金
上海交通大学金属基复合材料国家重点实验室开放基金