Hydrogen embrittlement of Ni3Al+B
Journal Article
·
· Scr. Metall.; (United States)
An experimental study is conducted to verify the hypothesis that Ni3Al, which exhibits an L1(2) structure and remains ordered up to the melting point, would be severely embrittled by hydrogen and that this effect would be reversible. Unlike its effect on Ni, boron alloying is found not to suppress hydrogen embrittlement in NiAl + B. A continuous oxide layer, however, is an effective barrier to the entry of hydrogen in this material. The reduction of accomodative slip processes, and the resultant buildup of stresses at the grain boundaries, appears to be the most likely cause of hydrogen embrittlement in NiAl + B and other ordered alloys. 11 references.
- Research Organization:
- Rensselaer Polytechnic Institute, Troy, NY
- OSTI ID:
- 5673326
- Journal Information:
- Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Vol. 19; ISSN SCRMB
- Country of Publication:
- United States
- Language:
- English
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