超声波和T6处理对原位自生Mg_2Si/Al复合材料微观组织与摩擦磨损性能的影响  

Effect of Ultrasonic and T6 Treatment on Microstructure and Friction and Wear Properties of In-situ Mg_2Si/Al Composite

作　　者：胡义锋[1] 白光珠 余昭福 张嘉艺[1] 刘龙[1] 刘政[2] 

机构地区：[1]江西理工大学材料科学与工程学院,江西赣州341000 [2]江西理工大学机电工程学院,江西赣州341000

出　　处：《热加工工艺》2017年第10期130-135,共6页Hot Working Technology

基　　金：国家自然科学基金项目(51361012);江西省自然科学基金项目(20114bab206014);江西省教育厅重点科技项目(GJJ11021)

摘　　要：采用超声波方法和T6处理制备了原位自生Mg_2Si/Al复合材料,研究了超声波和T6处理对该复合材料微观组织与摩擦磨损性能的影响。利用光学显微镜、荧光光谱分析仪和扫描电镜分析了该复合材料的化学成分和显微组织。并通过布氏硬度计和磨损试验机测试了该复合材料经T6处理后的硬度和超声波处理后的摩擦磨损性能。结果表明:超声波功率和时间分别为150 W和20 s时,复合材料的摩擦磨损性能最好;T6处理可有效改善Mg_2Si/Al基复合材料的凝固组织形貌和硬度。In-situ Mg2Si/Al composite was prepared by ultrasonic technique and T6 treatment. The effects of ultrasonic and T6 treatment on the microstructure and friction and wear properties of the composite were investigated. The chemical composition and microstructure of the composite was investigated by OM, XRF and SEM. The hardness of the composite after T6 treatment was researched by Brinell hardness tester. The friction and wear properties of the composite after ultrasonic were tested by wear testing machine. The results indicate that when the ultrasonic power and time is 150 W and 20 s, respectively, the fiiction and wear properties of the composite is the best. In addition, the solidification microstructure morphology and hardness of Mg2Si/A1 composite can be effectively improved by T6 treatment.

关 键 词：Mg2Si/Al复合材料 超声波 T6处理 摩擦磨损 

分 类 号：TB333[一般工业技术—材料科学与工程] TG244[金属学及工艺—铸造]