Abstract
This work investigates the root causes of streak defects, appearing as narrow, bright bands, on an anodised AA 6063-T6 extrusion using optical and electron microscopies. It was found that the appearance of etched and anodised aluminium alloy is associated with grain boundary grooves, etching steps and surface scallops which are determined by the distributions of grain size and crystallographic orientations. It was also revealed that the bright streaking regions had relatively large grains with a relatively strong texture. Such microstructure resulted in reduced light scattering by grain boundary grooves, surface scallops and etching steps with, consequently, brighter appearance.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.