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用粉末冶金法制备了分别用Al2O3、SiC颗粒增强的颗粒体积分数为25%的6061Al基复合材料,在不同温度对其进行固溶-时效热处理,通过拉伸曲线分析和断口SEM分析研究了增强颗粒与基体适配性对颗粒增强铝基复合材料拉伸性能的影响。结果表明,低强度Al2O3颗粒不适合用于增强高强度的6061Al基体;研究了增强颗粒与基体适配性对颗粒增强铝基复合材料强化机制的影响,发现主要通过影响应力传递机制来影响复合材料性能;揭示了适配性与增强颗粒开裂、复合材料屈服之间的关系,得出增强颗粒相对于基体强度越高,颗粒开裂越少,并总结了一种表示增强颗粒与基体适配性关系的方法。
The 6061Al matrix composites reinforced by Al2O3 and SiC particles with volume fraction of 25% were prepared by powder metallurgy method. The solution was treated with solution-heat treatment at different temperatures. The tensile strength and fracture toughness Effect of Particle - matrix Adaptability on Tensile Properties of Particle Reinforced Aluminum Matrix Composites. The results show that the low-strength Al2O3 particles are not suitable for strengthening the high-strength 6061Al matrix. The effect of the compatibility between the reinforcing particles and the matrix on the strengthening mechanism of the particle-reinforced aluminum matrix composites is studied. The results show that the influence of the stress transfer mechanism The relationship between the compatibility and the enhancement of particle cracking and the yield of the composite was revealed. The results showed that the higher the strength of the reinforced particle relative to the matrix, the less the particle cracking, and the conclusion that the compatibility between the enhanced particle and the matrix Methods.