Surface oxide development on aluminum alloy 6063 during heat treatment

• DOI: 10.1002/sia.6616
• Publication Date: 2019-02-20T10:56:37Z
• Authors: Lisa Rullik; Jonas Evertsson; Niclas Johansson; Florian Bertram; Jan‐Olov Nilsson; Alexei A. Zakharov; Anders Mikkelsen; Edvin Lundgren
• Keywords: Partial pressure; Chemical state

We report on the influence of oxygen partial pressure for development surface oxides covering industrial aluminum alloy standard 6063 at temperatures ranging from room temperature to 500° C. Using an array synchrotron‐based techniques, we followed change in oxide thickness, chemical composition, and lateral distribution alloying elements. The impact potential is most visible high where composition changes mostly Al based Mg based. This stark contrast ultra‐high vacuum (UHV) conditions only a compositional transition observed. microscopy data demonstrate that UHV case, segregation onto occurs firstly grain boundaries 300° C secondly sites over entire 400° Further, initial thickness 45 Å, as determined by XPS XRR, decreases all observed cases after heating At higher temperatures, however, highly influences resulting evident our X‐ray reflectivity data.