On the microstructure and the origin of intermetallic phase seams in magnetic pulse welding of aluminum and steelGefuge und Ursache von intermetallischen Phasen beim Magnetpulsschweißen von Aluminium und Stahl

被引：7

作者：

Boehme, M. ^{[1
]}

Sharafiev, S. ^{[1
]}

Schumacher, E. ^{[2
]}

Boehm, S. ^{[2
]}

Wagner, M. F. X. ^{[1
]}

机构：

[1] Tech Univ Chemnitz, Inst Mat Sci & Engn, Erfenschlager Str 73, D-09125 Chemnitz, Germany

[2] Univ Kassel, Dept Cutting & Joining Mfg Proc, Kurt Wolters Str 3, D-34125 Kassel, Germany

来源：

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK | 2019年 / 50卷 / 08期

关键词：

Impact welding; magnetic pulse welding; microstructure; electron backscatter diffraction (EBSD);

D O I：

10.1002/mawe.201900034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure of aluminum-steel compounds fabricated by magnetic pulse welding are investigated. Electron backscatter diffraction, energy dispersive x-ray spectroscopy and scanning electron microscopy revealed the existence of several different phases along the weld seam. While one layer could be identified as aluminum solid solution, a very thin layer close to the steel side of the compound eluded detailed characterization by scanning electron microscopy techniques. Transmission electron microscopy and selected area electron diffraction investigations of this layer revealed a mix of nanocrystalline and amorphous parts. When ambient pressure was reduced to 1 mbar during welding, no interlayers were observed in the samples. This suggests that the interlayers are precipitates of the jet that is formed during conventional impact welding.

引用

页码：958 / 964

页数：7

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