Microstructure and mechanical properties of magnesium alloy AZ31B solder joint using Zn-Mg filler metal - 文章详情页

作者：

Ma, Li (Ma, Li.) (学者：李明爱) | Long, Weimin (Long, Weimin.) | Qiao, Peixin (Qiao, Peixin.) | He, Dingyong (He, Dingyong.) (学者：贺定勇) | Li, Xiaoyan (Li, Xiaoyan.)

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摘要：

In　order　to　join　wrought　magnesium　alloy　AZ31B　sheet　high-frequency　induction　soldering　of　wrought　magnesium　alloy　AZ31B　using　Zn-Mg　filler　metal　was　investigated.　The　microstructure　of　the　Zn-Mg　filler　metal　was　evaluated.　Both　the　interface　microstructure　and　the　mechanical　properties　of　the　solder　joint　were　studied.　The　interface　microstructure　and　formation　phases　of　the　soldering　seam　were　investigated　by　X-ray　diffractometer,　scanning　electron　microscopy　and　X-ray　energy　dispersive　spectrometer.　The　strength　of　the　solder　joint　and　the　microhardness　of　the　interface　microstructure　were　tested.　The　results　show　that　Zn-Mg　filler　metal　reacts　with　the　base　metal　AZ31B,　and　α-Mg　matrix　and　α-Mg+γ-MgZn　eutectoid　structure　are　formed　in　soldering　seam,　and　the　microstructure　in　the　original　Zn-Mg　filler　metal　disappearing　after　the　soldering　process.　The　average　tensile　strength　of　the　butt　joint　is　51　MPa　and　the　average　shear　strength　of　the　overlap　joint　is　36　MPa.　The　microhardness　of　the　α-Mg+γ-MgZn　eutectoid　structure　is　the　maximum　in　the　solder　joint.　The　fracture　morphology　of　the　solder　joint　exhibits　intergranular　fracture　mode　and　the　fracture　comes　from　α-Mg+γ-MgZn　eutectoid　structure.

关键词：

Binary alloys Fillers Fracture Lead-free solders Magnesium alloys Magnesium printing plates Metals Microhardness Morphology Scanning electron microscopy Sheet metal Soldering Spectrometers Tensile strength Textures X rays Zinc alloys

作者机构：

[ 1 ] [Ma, Li]State Key Laboratory of Advanced Brazing Filler Metals and Technology (Preparation), Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China
[ 2 ] [Long, Weimin]State Key Laboratory of Advanced Brazing Filler Metals and Technology (Preparation), Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China
[ 3 ] [Qiao, Peixin]State Key Laboratory of Advanced Brazing Filler Metals and Technology (Preparation), Zhengzhou Research Institute of Mechanical Engineering, Zhengzhou 450001, China
[ 4 ] [He, Dingyong]School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Li, Xiaoyan]School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

电子邮件地址：

dyhe@bjut.edu.cn

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