In-situ Si particle-reinforced joints of hypereutectic Al−60Si alloys by ultrasonic-assisted soldering

作     者：Yuan-xing LI Xiang-bo ZHENG Chao-zheng ZHAO Zong-tao ZHU Yu-jie BAI Hui CHEN 李远星;郑向博;赵朝政;朱宗涛;白玉杰;陈辉

作者机构：Key Laboratory of Advanced Technologies of MaterialsMinistry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报(英文版))

年 卷 期：2025年第35卷第1期

页      面：77-90页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financial support from the National Natural Science Foundation of China(Nos.52275385,U2167216) Sichuan Province Science and Technology Support Program,China(No.2022YFG0086) 

主　　题：hypereutectic Al−60Si alloy ultrasonic-assisted soldering Si particle reinforcement Sn−9Zn solder 

摘      要：To improve the wettability of hypereutectic Al−60Si alloy and enhance the mechanical properties of the joints,Al−60Si alloy was joined by ultrasonic soldering with Sn-9Zn solder,and a sound joint with in-situ Si particle reinforcement was *** oxide film of Al−60Si alloy at the interface was identified by transmission electron microscopy(TEM)analysis as amorphous Al_(2)O_(3).The oxide of Si particles in the base metal was also *** oxide film of Al−60Si alloy was observed to be removed by ultrasonic vibration instead of holding *** particle-reinforced joints(35.7 vol.%)were obtained by increasing the ultrasonication *** maximum shear strength peaked at 99.5 MPa for soldering at 330℃with an ultrasonic vibration time of 50 s.A model of forming of Si particles reinforced joint under the ultrasound was proposed,and ultrasonic vibration was considered to promote the dissolution of Al and migration of Si particles.