Reinforcement effect of Mg-Al-Zn ternary IMC on MB8/2024 joints with Al/Zn/Cu/Zn multi-interlayer via ultrasonic-assisted brazing

被引：4

作者：

LI, Jie ^{[1
]}

Shi, Lei ^{[1
,2
]}

LI, Yi-nan ^{[1
]}

Zhou, Tao-shuai ^{[1
]}

Yu, Zi-jing ^{[1
]}

Zhang, Hong-chang ^{[1
]}

Peng, Zi-long ^{[1
]}

Miao, Shu-wen ^{[3
]}

Gao, Jian-guo ^{[3
]}

Su, Zhao-fang ^{[3
]}

机构：

[1] Qingdao Univ Technol, Sch Mech & Automot Engn, Qingdao 266000, Peoples R China

[2] Zhejiang Asia Gen Soldering & Brazing Mat Co Ltd, Hangzhou 310000, Peoples R China

[3] Shandong Jingdian Heavy Ind Grp Co Ltd, Jining 272100, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2023年 / 33卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Al; Zn; Cu; Zn multi-interlayer; ultrasonic-assisted brazing; intermetallic compound (IMC); phase transformation; mechanical performance; quasicrystal; MECHANICAL-PROPERTIES; MICROSTRUCTURAL EVOLUTION; TENSILE PROPERTIES; MAGNESIUM ALLOY; DIFFUSION; TEMPERATURE; INTERFACE; METAL; CU; 304-STAINLESS-STEEL;

D O I：

10.1016/S1003-6326(23)66162-X

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The evolution of microstructure in the MB8/2024 dissimilar alloy joints by using Al/Zn/Cu/Zn multi-interlayers via ultrasonic-assisted brazing was investigated. The results show that the addition of aluminum foil on the MB8 side realized the transformation of Al3Mg2 binary intermetallic compounds (IMCs) to AlMg4Zn11ternary IMCs along the interface between copper foil and MB8 magnesium alloys. This transformation reinforced the joints and then the shear strength reached a maximum at 22 s (85.26 MPa). Thermodynamic analysis shows that increment GMg,Al,Zn of AlMg4Zn11 (-38.65 kJ/mol) was smaller than that of Al3Mg2 (-31.94 kJ/mol), which provided a basis for the IMC transformation. Mg32(Al,Zn)49 quasicrystal was found for the first time using ultrasonic-assisted brazing due to the cavitation effect.

引用

页码：1015 / 1028

页数：14

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