Preparation of Al–La master alloy by ultrasonic method and modification on Al alloy

作     者：Hong Yan Xian-Chen Song Xin Huang 

作者机构：Department of Materials Processing EngineeringSchool of Mechanical and Electrical EngineeringNanchang University 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2015年第34卷第7期

页      面：457-462页

核心收录：

学科分类：08[工学] 0806[工学-冶金工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 0703[理学-化学] 080201[工学-机械制造及其自动化] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (No. 51165032) the Innovative Group of Science and Technology of College of Jiangxi Province (No. 00008713) the Jiangxi Province Education Commission Foundation (No. GJJ13203) 

主　　题：Rare earth La Master alloy Al alloy Ultrasonic 

摘      要：In this study, two kinds of Al–La master alloys were prepared by ultrasonic method and ordinary mixmelting method, and both of the alloys were added into the Al alloy.Then, the microstructure of Al–La master alloy and the modification effect on the Al alloy were investigated using optical microscope(OM), X-ray diffraction(XRD), scanning electron microscope(SEM), and energy disperse spectroscopy(EDS).The results show that because of ultrasonic cavitation and streaming, the grain size of Al–La master alloy prepared by the ultrasonic method is refined, which distributes evenly.And, there is no gas hole,inclusion, or segregation in the Al–La master alloy with aAl, La, and La3Al11.Furthermore, Al–La master alloys show a nice modification for Al alloy, which is much better than that prepared by ordinary mix-melting method.