| SiCp／Al复合材料微蠕变行为及其影响因素分析 |
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| 引用本文： | 李义春,安希.SiCp／Al复合材料微蠕变行为及其影响因素分析[J].航空学报,1994,15(5):632-635. |
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| 作者姓名： | 李义春 安希 |
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| 作者单位： | 北京有色金属研究总院，哈尔滨工业大学 |
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| 摘 要： | 通过对碳化硅颗粒增强铝基复合材料（ＳｉＣｐ／Ａｌ）微蠕变性能的测试及微观组织分析,研究了ＳｉＣｐ／Ａｌ复合材料微蠕变变形规律及机理。结果表明,ＳｉＣｐ／Ａｌ复合材料微蠕变变形行为可分为二个阶段：第一阶段是可动位错的耗尽阶段；第二阶段位错全面开动、增殖是引起材料微蠕变的主要原因。材料内的增强体颗粒、析出相可有效的提高材料的微蠕变抗力。
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| 关 键 词： | 复合材料 蠕变分析 位错 |
ANALYSIS OF MICROCREEP AND ITS AFFECTING FACTORS OF SICP/AI COMPOSITES |
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| Li YiChun.ANALYSIS OF MICROCREEP AND ITS AFFECTING FACTORS OF SICP/AI COMPOSITES[J].Acta Aeronautica et Astronautica Sinica,1994,15(5):632-635. |
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| Authors: | Li YiChun |
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| Institution: | General Research Institute for Nonferrous Metals,Beijing,100088;Harbin Institute of Technology,Harbin,150006 |
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| Abstract: | The deformation process and mechanism of microcreep of SiCp/Al composites are inves-tigated by the measurement of microcreep properties and analysis of transmlssion electron mi-croscopy,Results show that the process of microcreep deformation behavior of SICp/Al compos-ites can be divided into two;tages,the stage of moving dislocations defletion and the stage of dis-locations movement;the latter is the main cause of microcreep of SiCp/Al composites.The precip-itation phases and reinforcement particles in the SiCp/Al composites are important factors of in-creasing resistance to microcreep. |
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| Keywords: | composite materials creep analysis dislocations(materials) |
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