On the high-pressure phase stability
and elastic properties of β-titanium alloys

Smith, D; Joris, OPJ; Sankaran, A; Weekes, HE; Bull, DJ; Prior, TJ; Dye, D; Errandonea, D; Proctor, JE

Abstract

We have studied the compressibility and stability of different β-titanium alloys at high pressure, including binary Ti–Mo, Ti–24Nb–4Zr–8Sn (Ti2448) and Ti–36Nb–2Ta–0.3O (gum metal). We observed stability of the β phase in these alloys to 40GPa, well into the ω phase region in the P–T diagram of pure titanium. Gum metal was pressurised above 70GPa and forms a phase with a crystal structure similar to the η phase of pure Ti. The bulk moduli determined for the different alloys range from 97 ± 3GPa (Ti2448) to 124 ± 6GPa (Ti–16.8Mo–0.13O).

• Journal Article Type: Article
• Acceptance Date: Feb 15, 2017
• Publication Date: Mar 7, 2017
• Deposit Date: Mar 13, 2017
• Publicly Available Date: Mar 7, 2018
• Journal: Journal of Physics: Condensed Matter
• Print ISSN: 0953-8984
• Electronic ISSN: 1361-648X
• Publisher: IOP Publishing
• Volume: 29
• Issue: 15
• Pages: 155401-155401
• DOI: https://doi.org/10.1088/1361-648X/aa60b6
• Publisher URL: https://doi.org/10.1088/1361-648X/aa60b6
• Related Public URLs: http://iopscience.iop.org/journal/0953-8984
• Additional Information: Funders : Engineering and Physical Sciences Research Council (EPSRC); Projects : On the high-pressure phase stability and elastic properties of β-titanium alloys