金属基复合材料微屈服强度影响因素的理论与实验分析
Theoretical and Experimental Analysis on Influence Factors of Micro-yield Behavior of Metal Matrix Composite
吴 晶1, 李文芳2
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作者单位：1. 广东交通职业技术学院 机电控制系, 广东 广州 510650; 2. 华南理工大学 材料科学与工程学院, 广东 广州 510641)
中文关键字：短纤维； 微屈服； 强度
英文关键字：short fiber; micro-yield; strength
中文摘要：针对短纤维增强金属基复合材料(MMCs)的微屈服行为，应用细观力学计算和实验，定量分析了热处理状态、短纤维尺寸、体积比和分布状态对MMCs微屈服强度的影响。结果表明，短纤维的尺寸、分布状态、体积比对MMCs宏观和微屈服强度的影响趋势相反；时效处理可增加MMCs的宏观和微屈服强度；不同状态的MMCs微屈服行为符合Brown-lukens关系。
英文摘要：The micro-yield behavior of short fiber reinforced MMCs was analyzed by micro-mechanics model and experiment under different heat treatment state , short fiber size, volume fraction and distribution state. The results show that the influence of fiber size, volume fraction, distribution state on the macro-yield and micro-yield strength is in opposite side. The annealing treatment can enhance the macro-yield and micro-yield strength. The micro-yield behavior of MMCs under different state accords with the relationship of Brown-lukens.