Distribution of Zn and Interfacial Microstructure of Braze-Welding CMT Joints between Aluminium and Galvanized Steel Sheets |
| Journal |
Solid State Phenomena (Volume 127) |
| Volume |
Designing of Interfacial Structures in Advanced Materials and their Joints |
| Edited by |
Masaaki Naka |
| Pages |
43-48 |
| DOI |
10.4028/www.scientific.net/SSP.127.43 |
| Online since |
September, 2007 |
| Authors |
J.C. Feng,
Peng He,
Heinz Hackl
|
| Keywords |
Aluminum, Braze-Welding CMT, Galvanized Steel Sheet, Interfacial Microstructure |
| Abstract |
Distribution of Zn and interfacial microstructure of braze-welding CMT
joints between aluminium and galvanized steel sheets were researched. The results
showed, except the gas porosity contains a little Zn, the other areas of fusion zone
almost have no Zn. Temperature plays a decisive role in the distribution of Zn. The
content of Zn is higher in the dendritic crystal than the intergranular part. The Zn coat
adjacent to the joint is almost evaporated entirely. The Zn coat of steel sheet in the
heat-affected zone around the joint is badly destroyed, and the corrosion resistance of
the joint will decline. There are FeAl3 intermetallics and Al-Fe-Zn triphase solid
solution formed at the interface. |
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