OALib Journal期刊
ISSN: 2333-9721
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石墨/镁基复合材料中的残余应变、位错及孪晶
, PP. 449-454
Keywords: 纤维增强复合材料,镁基体,残余应力,位错,孪晶
Abstract:
利用电子显微术对石墨/镁基复合材料界面附近热应力造成的残余应变、位错结构及孪晶进行了分析与观察。位错形成于基体界面区,在切向、径向及轴向力的作用下向基体运动。在界面处存在一厚度约为150nm的应变层,在基体狭窄区存在应变集中现象。孪晶一般形成于界面处。若粗大孪晶终止于相邻界面处时,可导致界面开裂
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