Hydrogen effects on Ti-22Al-27Nb

D. Eliezer, A. Ben-Guigui, N. Stern, N. Eliaz, E. Abramov, R. G. Rowe

Research output: Contribution to conferencePaperpeer-review

Abstract

Ti-22Al-27Nb specimens of different microstructures were exposed to both cathodic and gaseous hydrogen charging. Lattice parameters of the ordered orthorhombic (O) phase and the bcc (β0) phase were determined using X-ray diffractometry. Neither cracks nor microstructural changes were found after cathodic hydrogen charging at 1 A/cm2 for 168 h. No cracking was found after gaseous hydrogen charging (4 bar, 1h) at temperatures below 500°C, and little cracking at temperatures above 500°C as compared to Ti-25Al-10Nb-3V-1Mo. These results suggest that Ti-22Al-27Nb may have good resistance to hydrogen. Gaseous hydrogen charging resulted in changes in the X-ray diffraction pattern, showing that Al15H2Ti15 hydride had been formed.

Original languageEnglish
Pages777-785
Number of pages9
StatePublished - 1 Jan 1996
EventProceedings of the 1994 5th International Conference on the Effect of Hydrogen on the Behavior of Materials - Moran, WY, USA
Duration: 11 Sep 199414 Sep 1994

Conference

ConferenceProceedings of the 1994 5th International Conference on the Effect of Hydrogen on the Behavior of Materials
CityMoran, WY, USA
Period11/09/9414/09/94

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