Author/Authors :
Din، نويسنده , , Rameez Ud and Valgarًsson، نويسنده , , Smلri and Jellesen، نويسنده , , Morten Stendahl and Eriksen، نويسنده , , Hans Jّrgen and Praastrup، نويسنده , , Ulrik and Mّller، نويسنده , , Per and Ambat، نويسنده , , Rajan، نويسنده ,
Abstract :
In this study detailed microstructural investigation of the reason for unexpected corrosion of powder coated aluminium alloy AA6060 windows profiles has been performed. The results from this study reveals that the failure of the window profiles was originated from the surface defects present on the extruded AA6060 aluminium profile after metallurgical process prior to powder coating. Surface defects are produced due to intermetallic particles in the alloy, which disturb the flow during the extrusion process. The corrosion mechanism leading to the failure of the powder coated AA6060 aluminium profiles in service is explained.
