摘要
对SiCp／2024A1复合材料及其基体2024A1合金的微屈眼行为和热处理的影响进行了详细的比较研究结果表明，由于SiC颗粒的作用，复合材料在微屈服前即已产生明显的应变弛豫，并且其微屈服行为也与铝合金不同在时效处理中，两种材料的微屈服强度均受时效强化相析出规律的控制，表现出“峰时效”现象；而冷热循环处理能改善2024A1的微屈服性能。
microyield behaviours of SiCp/2024A1 composite and its matrix alloy were investigated in this work. The results indicated that the composite showed quite different strain relaxation before' general' microyielding and its microyield mechanism was not same as that of the matrix alloy. It was also showed that during aging treatment, the microyield strengths of both composite and matrix alloy were dependent to precipitation of the strengthening phase,S', and exhibited a peak aging trend. Thermal cycling treatment could improve the microyield strength of the matrix alloy, but lower the microyield strength of the composite.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第7期713-718,共6页
Acta Metallurgica Sinica
关键词
微屈服
热处理
应变弛豫
铝合金
复合材料
microyield, SiCp/2024A1, 2024A1, heat treatment, strain relaxation
