Hydrogen effects in gamma titanium aluminides

J. Haddad; D. Eliezer

doi:10.1023/A:1018559813721

Hydrogen effects in gamma titanium aluminides

J. Haddad, D. Eliezer

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The results of X-ray diffraction studies on Ti-48Al-1V at %(Ti-48-1) are reported. The objective of this study is to investigate the effects of hydrogen on phase changes and hydride formation in these alloys. Hydrogen-induced cracking was found to occur as a result of hydrogen charging. The cracking appears after the hydride phase formation and is observed to be dispersed throughout the material. The hexagonal hydride formed is unlike any previously reported titanium hydride. The hydride exhibits an 8% volume contraction compared to Ti₃Al which is made up of a 10% contraction in the a-direction, and a 12.5% expansion in the c-direction.

Original language	English
Pages (from-to)	2229-2232
Number of pages	4
Journal	Journal of Materials Science
Volume	32
Issue number	8
DOIs	https://doi.org/10.1023/A:1018559813721
State	Published - 1 Jan 1997

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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abstract = "The results of X-ray diffraction studies on Ti-48Al-1V at %(Ti-48-1) are reported. The objective of this study is to investigate the effects of hydrogen on phase changes and hydride formation in these alloys. Hydrogen-induced cracking was found to occur as a result of hydrogen charging. The cracking appears after the hydride phase formation and is observed to be dispersed throughout the material. The hexagonal hydride formed is unlike any previously reported titanium hydride. The hydride exhibits an 8% volume contraction compared to Ti3Al which is made up of a 10% contraction in the a-direction, and a 12.5% expansion in the c-direction.",

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AB - The results of X-ray diffraction studies on Ti-48Al-1V at %(Ti-48-1) are reported. The objective of this study is to investigate the effects of hydrogen on phase changes and hydride formation in these alloys. Hydrogen-induced cracking was found to occur as a result of hydrogen charging. The cracking appears after the hydride phase formation and is observed to be dispersed throughout the material. The hexagonal hydride formed is unlike any previously reported titanium hydride. The hydride exhibits an 8% volume contraction compared to Ti3Al which is made up of a 10% contraction in the a-direction, and a 12.5% expansion in the c-direction.

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Hydrogen effects in gamma titanium aluminides

Abstract

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