高能超声对体育器材用铸态铝-镁合金组织与性能的影响  

Effects of high-intensity ultrasonic on the microstructure and properties of as-cast Al-Mg alloy for sports equipment

作　　者：孔琳琳[1] 李晓华[2] 

机构地区：[1]重庆人文科技学院,重庆401524 [2]成都理工大学,四川成都610059

出　　处：《轻合金加工技术》2017年第1期10-13,共4页Light Alloy Fabrication Technology

基　　金：四川省教育厅自然科学类重点项目基金(资助号:082A102)

摘　　要：采用高能超声方法对熔融态体育器材用铝-镁合金进行处理,并进行了铸态合金的显微组织观察,拉伸性能和冲击性能的测试。结果表明,高能超声处理明显细化合金晶粒,显著提高合金的拉伸性能和冲击性能。与未高能超声处理相比,高能超声处理合金的平均晶粒尺寸减小78.3%、抗拉强度增大42.1%、屈服强度增大76.6%、冲击吸收功增大37.5%、断后伸长率基本保持不变。Molten state A1-Mg alloy for sports equipment was treated by the method of high-intensity ultrasonic, and the microstructure, tensile property and impact property were tested and analyzed for the as-cast alloy. The results show that high-intensity ultrasonic could refine the grains and improve the tensile and impact properties. Co alloy not treated by the high-intensity ultrasonic, the average grain size of the treated alloy decreases by 78.3%, the tensile strength, yield strength and impact absorbing power increase by 42.1% ,76.6% and 37.5% ,respectively. While the elongation of the alloy remains almost unchanged.

关 键 词：高能超声 铝-镁合金 体育器材 拉伸性能 冲击性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程] TG663[金属学及工艺—金属材料]