title: Ultrasonic semi-solid coating soldering 6061 aluminum alloys with Sn-Pb-Zn alloys.
abstract: In this paper, 6061 aluminum alloys were soldered without a flux by the ultrasonic semi-solid coating soldering at a low temperature. According to the analyses, it could be obtained that the following results. The effect of ultrasound on the coating which promoted processes of metallurgical reaction between the components of the solder and 6061 aluminum alloys due to the thermal effect. Al2Zn3 was obtained near the interface. When the solder was in semi-solid state, the connection was completed. Ultimately, the interlayer mainly composed of three kinds of microstructure zones: α-Pb solid solution phases, β-Sn phases and Sn-Pb eutectic phases. The strength of the joints was improved significantly with the minimum shear strength approaching 101MPa.
authors.affiliation: College of Material Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China.
authors.forename: Xin-ye
authors.initials: XY
authors.lastname: Yu
authors.affiliation: College of Material Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China.
authors.forename: Wen-qing
authors.initials: WQ
authors.lastname: Xing
authors.affiliation: College of Material Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China; Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China; Shanxi Key Laboratory of Advanced Magnesium-Based Materials, Taiyuan 030024, China. Electronic address: dingmin@tyut.edu.cn.
authors.forename: Min
authors.initials: M
authors.lastname: Ding
keywords: 6061 aluminum alloy; Crystallization behavior; Shear strength; Ultrasonic semi-solid coating soldering