The Role of Oxygen in α2 Formation in the Titanium Model Alloy Ti-7Al

Gardner H. M.; Radecka A.; Rugg D.; Armstrong D. E. J.; Moody M. P.; Bagot P. A. J.

doi:10.1051/matecconf/202032104003

MATEC Web of Conferences (Jan 2020)

The Role of Oxygen in α2 Formation in the Titanium Model Alloy Ti-7Al

Gardner H. M.,
Radecka A.,
Rugg D.,
Armstrong D. E. J.,
Moody M. P.,
Bagot P. A. J.

Affiliations

Gardner H. M.: Department of Materials, University of Oxford
Radecka A.: Rolls-Royce plc
Rugg D.: Rolls-Royce plc
Armstrong D. E. J.: Department of Materials, University of Oxford
Moody M. P.: Department of Materials, University of Oxford
Bagot P. A. J.: Department of Materials, University of Oxford

DOI: https://doi.org/10.1051/matecconf/202032104003
Journal volume & issue: Vol. 321
p. 04003

Abstract

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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.

Published in MATEC Web of Conferences

ISSN: 2261-236X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.matec-conferences.org

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