MATEC Web Conf.
Volume 321, 2020The 14th World Conference on Titanium (Ti 2019)
|Number of page(s)||7|
|Published online||12 October 2020|
The Role of Oxygen in α2 Formation in the Titanium Model Alloy Ti-7Al
1 Department of Materials, University of Oxford, Oxford OX1 3PH, United Kingdom
2 Rolls-Royce plc, Derby, DE24 8BJ, United Kingdom
* Corresponding Author: email@example.com
The mechanical and microstructural response of a model Ti-7wt.%Al alloy doped with 500 wppm oxygen has been examined in detail as a function of ageing. Three ageing conditions, ice-water quenched, and aged at 550 oC for 10 or 49 days were examined in detail as a function of ageing. Nanoindentation was used to measure hardness as a function of ageing, while Atom Probe Tomography (APT) also revealed α2 precipitation in the aged samples. The partitioning pReference of oxygen to the α matrix instead of the α2 precipitates has been directly measured.
© The Authors, published by EDP Sciences, 2020
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