细晶铝合金低温超声辅助TLP钎焊工艺及机理

doi:10.7527/S1000-6893.2021.26236

材料工程与机械制造

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细晶铝合金低温超声辅助TLP钎焊工艺及机理

王健^1,2, 杨晓雨^1,2, 李卓霖^1,2, 王浩然^1,2, 武晓伟^1,2, 宋晓国^1,2

1. 哈尔滨工业大学先进焊接与连接国家重点实验室, 哈尔滨 150001;
2. 哈尔滨工业大学(威海) 山东省特种焊接技术重点实验室, 威海 264209

收稿日期:2021-08-16 修回日期:2021-09-22 发布日期:2021-10-18
通讯作者: 李卓霖,E-mail:lizl@hit.edu.cn E-mail:lizl@hit.edu.cn
基金资助:
国家自然科学基金（51805111）

Process and mechanism of low-temperature ultrasonic assisted TLP soldering of fine grain aluminum alloy

WANG Jian^1,2, YANG Xiaoyu^1,2, LI Zhuolin^1,2, WANG Haoran^1,2, WU Xiaowei^1,2, SONG Xiaoguo^1,2

1. State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;
2. Shandong Provincial Key Lab of Special Welding Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China

Received:2021-08-16 Revised:2021-09-22 Published:2021-10-18
Supported by:
National Natural Science Foundation of China (51805111)

摘要/Abstract

摘要： 细晶铝合金存在热敏感性和焊接性差的问题，限制了其在各领域的广泛应用。试验采用低温超声辅助瞬态液相扩散钎焊，降低热输入，以减少钎焊过程中母材性能的损失；在400℃下，研究了超声作用时间对细晶铝合接头界面冶金反应与力学性能的影响。典型钎缝组织由α-Al、β-Zn、共晶组织以及扩散层构成。随着超声作用时间的增加，钎缝中Al含量逐渐升高，β-Zn和共晶组织随之减少，而α-Al含量和扩散层厚度逐渐增加；超声作用时间为9 s时形成全α-Al固溶体接头，平均抗剪强度为238.5 MPa。

关键词: 细晶铝合金, 超声辅助TLP钎焊, 超声时间, 组织演变, 力学性能

Abstract: Fine grain aluminum alloy has the problems of poor thermal sensitivity and weldability, which limits its wide application in various fields. In this experiment, in order to reduce the property loss of base metal during the welding process, transient liquid phase soldering(TLP Soldering) is constructed. The effect of ultrasonic action time on the interface metallurgical reaction and mechanical properties of fine grain aluminum joint is studied at 400℃. Typical weld microstructure is composed of α-Al, β-Zn, eutectic microstructure and diffusion layer. With the increase of ultrasonic time, the content of Al in the weld increases gradually, and the β-Zn and eutectic structures decrease, while the content of α-Al and the thickness of diffusion layer increase gradually. Finally, a full α-Al solid solution joint is formed, and the shear strength reaches 238.5 MPa. with the time to 9 s.

Key words: fine grained aluminum alloy, ultrasonic assisted TLP soldering, ultrasonic time, organizational evolution, mechanical properties

中图分类号:

V252.2
TG454

王健, 杨晓雨, 李卓霖, 王浩然, 武晓伟, 宋晓国. 细晶铝合金低温超声辅助TLP钎焊工艺及机理[J]. 航空学报, 2022, 43(12): 426236-426236.

WANG Jian, YANG Xiaoyu, LI Zhuolin, WANG Haoran, WU Xiaowei, SONG Xiaoguo. Process and mechanism of low-temperature ultrasonic assisted TLP soldering of fine grain aluminum alloy[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(12): 426236-426236.

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细晶铝合金低温超声辅助TLP钎焊工艺及机理

Process and mechanism of low-temperature ultrasonic assisted TLP soldering of fine grain aluminum alloy

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