大功率超声处理对铸态QAl9-4铝青铜组织与性能的影响  

Effect of High-Power Ultrasonic Treatment on Microstructure and Properties of As-Cast QAl9-4 Aluminum Bronze

作　　者：吕海波 刘祥玲 索忠源[1] 姜峰[1] 王鑫[1] LYU Hai-bo;LIU Xiang-ling;SUO Zhong-yuan;JIANG Feng;WANG Xin(College of Mechanical and Electrical Engineering,Jilin Institute of Chemical Technology,Jilin 132022,Jilin,China)

机构地区：[1]吉林化工学院机电工程学院,吉林吉林132022

出　　处：《铸造》2020年第11期1162-1166,共5页Foundry

基　　金：吉林化工学院校级重大项目(吉化院重大合字[2018]第012号)。

摘　　要：研究了大功率超声处理对铸态QAl9-4铝青铜组织与性能的影响。结果表明:超声处理后合金中的α相转变为细小、均匀的等轴晶,K相则由不规则形状转变为相对较粗大的四边形,其含量少于未施加超声处理的合金。超声处理后的合金的抗拉强度为569 MPa,布氏硬度为HB141,伸长率为18.9%。与未施加超声处理合金相比,抗拉强度和硬度分别提高了11.6%和16.5%,而伸长率则降低了31.3%。另外,两种合金主要磨损形式均为磨粒磨损和粘着磨损,超声处理后的合金耐磨性有所降低。The effect of high-power ultrasonic treatment on the microstructure and properties of as-cast QAl9-4 aluminum bronze was investigated. The results show that α phase in the alloy became fine and uniform equiaxed grains, K-phase was changed from an irregular form to a relatively large quadrilateral after ultrasonic treatment, and the content of K-phase was less than that of the alloy without ultrasonic treatment. The tensile strength of the alloy with ultrasonic treatment was 569 MPa, Brinell hardness was HB141, elongation was 18.9%. Compared with the alloy without ultrasonic treatment, the tensile strength and Brinell hardness increased by 11.6% and 16.5%, respectively, while the elongation decreased by 31.3%. Furthermore, the wear mechanism of the two alloys were abrasive wear and adhesive wear, and the wear resistance of the alloy with ultrasonic treatment decreased.

关 键 词：大功率超声 QAl9-4铝青铜 组织与性能 

分 类 号：TG146.11[一般工业技术—材料科学与工程]