摘要
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。
The hardness and wear performance of Al matrix composite reinforced by deformation nanometric Al2O3 particle were investigated by metallographic analysis,durometer and wear test.The results show that the hardness and wear performance of the composite are greatly enhanced after heat treatment.By comparision,after solution at 510 ℃for 3 h and aging at 120 ℃ for 24 h,the wear performance of the composite is best,the wear volume of the composite only makes up 8.8% of the substrate under same condition of experiment,the friction coefficient is only 0.18.In addition,the hardness of the composite after aging decreases with the increase of solution temperature.
出处
《热加工工艺》
CSCD
北大核心
2011年第8期178-180,共3页
Hot Working Technology
关键词
纳米Al2O3颗粒
热处理
硬度
耐磨性
nano-metric Al2O3 particle
heat treatment
hardness
wear resistance
