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Characterization of Ti-Al surface alloy formed by pulsed electron-beam melting of film-substrate system

Abstract : This paper presents our first results of an ongoing research dedicated to the analysis of Ti-Al surface alloy obtained by a new duplex e-beam treatment. The crack-free Ti3Al-based surface alloy was synthesized by cyclic pulsed melting/mixing of pre-deposited Al film (100nm) on Ti substrate with a low-energy (10–20keV) high-current electron beam (3μs, 3.5J/cm2) followed by additional pulsed e-beam melting (100μs, 15keV, 15J/cm2). The surface analysis has revealed the complexity of the local transformation paths associated with this synthesis mode. A fairly good surface chemical homogeneity was obtained but a duplex microstructures formed because of local changes in the primary phase under rapid solidification and the subsequent modifications of the solid state transformation paths.
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https://hal.univ-lorraine.fr/hal-03059575
Contributor : Nathalie Allain <>
Submitted on : Saturday, December 12, 2020 - 6:50:24 PM
Last modification on : Friday, February 26, 2021 - 2:48:03 PM

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N Allain-Bonasso, V Rotshtein, E. Bouzy, L. Germain, Yu Ivanov, et al.. Characterization of Ti-Al surface alloy formed by pulsed electron-beam melting of film-substrate system. Journal of Physics: Conference Series, IOP Publishing, 2013, 416, pp.012007. ⟨10.1088/1742-6596/416/1/012007⟩. ⟨hal-03059575⟩

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