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采用现代冶金分析、硬度测定和磨损性实验研究了不同热处理条件下变形态纳米Al2O3颗粒增强铝基复合材料的性能。结果表明:形变热处理可以大幅提高该材料的硬度和耐磨性;尤其是在510℃×3 h固溶+120℃×24 h时效状态下复合材料的耐磨性最好,磨损量仅为相同磨损条件下基体材料的8.8%,摩擦系数仅为0.18;但随固溶温度的升高,时效后复合材料的硬度的提高幅度有下降趋势。
Modern metallurgical analysis, hardness measurement and wear test were used to study the properties of modified aluminum matrix composites reinforced with different morphologies under different heat treatment conditions. The results show that: the deformation heat treatment can greatly improve the hardness and wear resistance of the material; especially in the 510 ℃ × 3 h solution + 120 ℃ × 24 h aging state composites wear the best wear resistance is only the same Under the condition of wear, the friction coefficient of the matrix material is 8.8% and the friction coefficient is only 0.18. However, with the increase of the solution temperature, the hardness of the composites has a decreasing trend.