Phase of brazing seam and mechanical properties of magnesium alloy AZ31B brazed joint - Details

Author：

Ma, Li (Ma, Li.) (Scholars：李明爱) | He, Ding-Yong (He, Ding-Yong.) (Scholars：贺定勇) | Wang, Li-Zhi (Wang, Li-Zhi.) | Jiang, Jian-Min (Jiang, Jian-Min.) | Li, Xiao-Yan (Li, Xiao-Yan.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

Induction　brazing　of　wrought　magnesium　alloy　AZ31B　using　Al　matrix　filler　metal　was　investigated.　Both　the　phases　of　brazing　seam　and　the　mechanical　properties　of　brazed　joint　were　studied.　The　interface　structure　and　formation　phase　of　brazing　seam　of　the　brazed　joint　were　investigated　by　scanning　electron　microscopy,　X-ray　diffraction　and　X-ray　electron　probe　microanalysis.　The　tensile　strength　of　joint　and　the　microhardness　of　the　formation　phases　were　also　tested.　The　results　show　that　Al　matrix　filler　metal　has　reacted　with　the　base　metal　and　α-Mg,　β-Mg17　(Al,　Zn)12　phases　have　been　produced　in　brazing　seam.　Average　tensile　strength　of　the　butted　joint　reached　42　MPa　and　average　shear　strength　of　the　overlapped　joint　reached　27　MPa.　The　joint　mainly　exhibits　intergranular　fracture　mode　and　the　fracture　comes　from　β-Mg17(Al,　Zn)12　hard　brittle　phase.

Keyword：

Metals Electron probe microanalysis Filler metals Textures Magnesium alloys Fillers Induction heating Scanning electron microscopy Brazing Tensile strength Joints (structural components)

Author Community：

[ 1 ] [Ma, Li]School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [He, Ding-Yong]School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wang, Li-Zhi]School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Jiang, Jian-Min]School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Li, Xiao-Yan]School of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China