Microstructure evolution and mechanical properties of the Sip/Zn- Al composite joints by ultrasonic-assisted soldering in air  

作　　者：Kang Yuqing Shen Haoran Fu Yang Chen Yunru Xu Chang Li Xin Gu Keyun Li Xiaohai An Ledong Wang Qian 康宇清;沈浩然;付阳;陈韵如;许昌;李昕;顾克云;李啸海;安乐东;王谦(Guangdong Institute of Special Equipment Inspection and Research Zhanjiang Branch,Zhanjiang 524000,China;Shanghai Aerospace Equipments Manufacture,Shanghai 200245,China;School of Materials Science and Engineering,Tianjin University of Technology,Tianjin 300384,China)

机构地区：[1]Guangdong Institute of Special Equipment Inspection and Research Zhanjiang Branch, Zhanjiang 524000, China [2]Shanghai Aerospace Equipments Manufacture, Shanghai 200245, China [3]School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China

出　　处：《China Welding》2018年第2期39-44,共6页中国焊接（英文版）

基　　金：sponsored by the National Natural Science Foundation of China(Grant No.51504165);the Project funded by the China Postdoctoral Science Foundation(Grant No.2016M601271);Tianjin Scince&Technology Project(Grant No.16JCQNJC02600)

摘　　要：Hypereutectic Al -27Si alloys were joined without flux by ultrasonic-assisted soldering at 420 ℃ in air using Zn -5Al the filler alloys, and Si particulate-reinforced Zn - Al based composites filler joints were obtained. The ultrasonic vibration introduced into soldering could influence the migration of Si particles and the microstructure of solidified Zn - Al based alloys. Both the distribution of Si particles and microstructure of the solidified Zn - Al based alloys affected the shear strength of joints. The shear strength increased with the ultrasonic vibration time. The highest average shear strength of joints reached to -68.5 MPa. Transcrystalline rupture mode was observed on the fracture surface.Hypereutectic Al -27Si alloys were joined without flux by ultrasonic-assisted soldering at 420 ℃ in air using Zn -5Al the filler alloys, and Si particulate-reinforced Zn - Al based composites filler joints were obtained. The ultrasonic vibration introduced into soldering could influence the migration of Si particles and the microstructure of solidified Zn - Al based alloys. Both the distribution of Si particles and microstructure of the solidified Zn - Al based alloys affected the shear strength of joints. The shear strength increased with the ultrasonic vibration time. The highest average shear strength of joints reached to -68.5 MPa. Transcrystalline rupture mode was observed on the fracture surface.

关 键 词：Hypereutectic Al - Si alloys ultrasonic SOLDERING microstructure mechanical properties 

分 类 号：TG453.9[金属学及工艺—焊接]