High-pressure hydrogen charging of TiAl-based titanium aluminides
- Shibaura Inst. of Tech., Omiya, Saitama (Japan). Dept. of Mechanical Engineering
The ordered intermetallic titanium aluminides, particularly Ti{sub 3}Al ({alpha}{sub 2}) and TiAl ({gamma}) based alloys, have attractive specific properties at elevated temperatures. These attractive properties imply that titanium aluminides will be exposed to hostile high-temperature environmental which can be hydrogen ranging all the way from cryogenic liquid hydrogen to elevated temperature high-pressure gaseous hydrogen. Most of the research on hydrogen effects in titanium aluminides have been focused on microstructural changes either by low-pressure gaseous hydrogen charging at elevated temperatures or cathodic hydrogen charging at room temperature. However, the process of hydrogen uptake in {gamma}-based alloys in a high-pressure of hydrogen gas has not yet been reported. This paper investigates the process of hydrogen uptake in {gamma}-based titanium aluminides by means of thermogravimetric measurements at a hydrogen pressure of 10 MPa.
- OSTI ID:
- 611573
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 4 Vol. 38; ISSN 1359-6462; ISSN SCMAF7
- Country of Publication:
- United States
- Language:
- English
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