First experimental evidence of oxygen ordering in dilute titanium-oxygen alloys - Archive ouverte HAL Access content directly
Journal Articles Materials Research Letters Year : 2022

First experimental evidence of oxygen ordering in dilute titanium-oxygen alloys

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Abstract

Small addition of oxygen is currently used to improve the mechanical properties of titanium. It has been thought, until now, that oxygen fully dissolves in the titanium matrix, thus leading to a solid solution. However, we show here, with transmission electronic microscopy and X-ray diffraction, that oxygen can also form ordered precipitates with a Ti$_6$ O-type structure, even for a concentration as low as 0.15 wt% O. The ordered precipitates found in a series of pure binary Ti-O alloys are also visible in commercially pure titanium, including grades 2 and 4, two compositions widely used for technological applications.
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Dates and versions

cea-03652065 , version 1 (26-04-2022)

Licence

Attribution - CC BY 4.0

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Régis Poulain, Stéphanie Delannoy, Ivan Guillot, Fabienne Amann, Raphaelle Guillou, et al.. First experimental evidence of oxygen ordering in dilute titanium-oxygen alloys. Materials Research Letters, 2022, 10, pp.481-487. ⟨10.1080/21663831.2022.2057202⟩. ⟨cea-03652065⟩
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