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ZHENG Xiangbo, LI Yuanxing, BAI Yujie, LIU Yingzong, ZHU Zongtao, DONG Yue. Microstructure and mechanical properties of ultrasonic assisted soldering joint of Al-60Si alloy at low temperature[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(2): 94-100. DOI: 10.12073/j.hjxb.20211109001
Citation: ZHENG Xiangbo, LI Yuanxing, BAI Yujie, LIU Yingzong, ZHU Zongtao, DONG Yue. Microstructure and mechanical properties of ultrasonic assisted soldering joint of Al-60Si alloy at low temperature[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2022, 43(2): 94-100. DOI: 10.12073/j.hjxb.20211109001
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Microstructure and mechanical properties of ultrasonic assisted soldering joint of Al-60Si alloy at low temperature

  • 1.

    Key Laboratory of Advanced Technologies of Materials, Southwest Jiaotong University, Chengdu, 610031, China

  • 2.

    Chengdu Metro Operation Co., Ltd., Chengdu, 610057, China

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  • Received Date: November 08, 2021
  • Available Online: February 23, 2022
    Graphical Abstract
    • Abstract
  • Ultrasonic-assisted low-temperature brazing of Al-60Si alloy was carried out with SnAgCu solder. The effects of brazing temperature and ultrasonic time on the mechanical properties and microstructure of the joint were investigated. High (240 ℃ to 360 ℃), the average mass fraction of Si particles in the brazing joint increases (1.11% to 7.17%), and the shear strength of the joint increases first and then decreases. The highest value during welding is 42 MPa; when the brazing temperature is fixed at 330 ℃, and the time that ultrasonic waves are applied to the substrate is increased (from 10 s to 70 s), the average mass fraction of Si particles in the brazing seam increases accordingly (from 5.13% increased to 9.18%), the shear strength of the joint showed a trend of increasing first and then decreasing, reaching the highest at 51 MPa when ultrasonic for 50 s.
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    • References (11)
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