| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1471246 | Corrosion Science | 2009 | 6 Pages |
Abstract
The paper presents the corrosion behaviour of the Nd:YAG laser–gas metal arc (GMA) welds of AA6061-T6 alloy. The laser–GMA hybrid welding enhances the corrosion susceptibility of AA6061 alloy. The surface morphology observation and composition analysis were investigated by the scanning electron microscopy (SEM) with energy dispersive X-ray (EDX) spectroscopy. An increasing of the precipitate phase is observed in the weld fusion zone (WFZ). The WFZ suffers more severe pitting and cracks are associated with pitting. It is proposed that the increased precipitate phase increases the galvanic corrosion couples and results in the aggravation of pitting and cracking in the WFZ.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Da-Quan Zhang, Jin Li, Hyung Goun Joo, Kang Yong Lee,