研究了6061/AlzO3复合材料中球形Al2O3颗粒的强化作用.该强化颗粒的加入大大提高了材料在固溶处理后未时效状态的强度.对组织的观察和位错密度的测量表明,该强化作用与位错强化模型的计算结果一致.强化颗粒的加入还显著提高了材料在各种时效状态的加工硬化率.将Ashby提出的含异质颗粒复合材料的几何必须位错模型与位错强化模型结合,可以很好地解释加工硬化率的提高.
参考文献
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