Abstract
Abstract The near edge fine structures of the γ-TiAl alloy recorded either in XAS (K edges) or in EELS (L edges) have been compared with calculations based on band structure or full multiple scattering techniques. Good agreement between experiment and theory has been achieved for the Ti-K, Al-K and Al-L edges. The discrepancy observed between experiment and theory at the Ti-L23 edges is interpreted as the failure of the single particle approximation at these edges due to core hole and strong exchange interaction. Strong hybridization between the Ti and Al atoms is demonstrated and supported by analysing charge density maps obtained from the band structure calculations. The existence of Ti-d-Al-p, Ti-d-Al-s and Ti-d-Ti-d hybrids, and therefore covalent character in the bonding, are discussed in terms of the mechanical properties of the γ-TiAl alloy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
