首页|Joined AZ31B Magnesium Alloys with Ag Interlayer by Ultrasonic-Induced Transient Liquid Phase Bonding in Air

Joined AZ31B Magnesium Alloys with Ag Interlayer by Ultrasonic-Induced Transient Liquid Phase Bonding in Air

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AZ31B magnesium alloys are commonly used in lightweight structures of automobile and aerospace industry.In this work,the ultrasonic-induced transient liquid phase bonding technique is deployed to joint AZ31B magnesium alloys at 490 ℃ with Ag interlayer in the atmosphere.The effect of ultrasonic vibration on microstructure and mechanical properties of welding seam is investigated.As vibration duration increases,the width of the welding seam increases firstly and then decreases.When the ultrasound vibration sustained for one second,the eutectic reaction occurred in the contacting interface between Ag interlayer and the base metal AZ31B,resulting in formation of liquid phase and metallurgical bonding.When the ultra-sound vibration sustained for seven second,the width of the welding seam increased to a maximum of about 303.1 pm and the average shear bond strength of the welding joint attained the peak value of about 66.87 MPa.When the ultrasound vibra-tion sustained over seven seconds,the liquid phase is gradually squeezed out and the width of the welding seam decreases.α-Mg and AgMg3 can be observed in the welding seam.The analysis shows that α-Mg has a certain strengthening effect.The whole process of appearance,growth and integration of α-Mg is analyzed.

Ultrasonic bondingMagnesium alloySilverMicrostructureIntermetallic compound

Qian Wang、Peng Yu、Haoran Lin、Chongzhi Guo、Xiaoqiang Hu

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Ganjiang Innovation Academy,Chinese Academy of Sciences,Ganzhou 341119,China

School of Rare Earths,University of Science and Technology of China,Hefei 230026,China

Shenyang 7D New Materials Equipment Co.LTD.,Shenyang 110076,China

Shenyang National Laboratory of Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China

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Selfdeployed Projects of Ganjiang Innovation Academy,Chinese Academy of SciencesJiangxi Province"Double Thousand Plan"LingChuang Research Project of China National Nuclear CorporationLingChuang Research Project of China National Nuclear Corporation

E355B0020jxsq2023101058CNNC-LCKY-202283CNNC-LCKY-202284

2024

10.1007/s40195-024-01702-3

金属学报(英文版)
中国金属学会

金属学报(英文版)

CSTPCD
影响因子：0.77
ISSN：1006-7191
年,卷(期)：2024.37(7)