| SiCp/2024A1复合材料及2024A1合金的微屈服行为 |
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| 引用本文： | 张帆,李小璀,金城,邱继明,胡正军.SiCp/2024A1复合材料及2024A1合金的微屈服行为[J].金属学报,1998(7). |
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| 作者姓名： | 张帆 李小璀 金城 邱继明 胡正军 |
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| 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，但却对SiCp／2024A1的微屈服强度不利
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| 关 键 词： | 微屈服 SiCp／2024A1 2024A1合金 热处理 应变弛豫 |
MICROYIELD BEHAVIOURS OF SiCp/2024A1 COMPOSITE AND 2024A1 ALLOY |
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| ZHANG Fan, LI Xiaocui, JIN Cheng, QIU Jiming, HU Zhengjun.MICROYIELD BEHAVIOURS OF SiCp/2024A1 COMPOSITE AND 2024A1 ALLOY[J].Acta Metallurgica Sinica,1998(7). |
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| Authors: | ZHANG Fan LI Xiaocui JIN Cheng QIU Jiming HU Zhengjun |
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| Abstract: | 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. |
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| Keywords: | microyield SiCp/2024A1 2024A1 heat treatment strain relaxation |
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