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Hydrogen Embrittlement of FeAl and Fe3Al

Published online by Cambridge University Press:  26 February 2011

M. Shea ,
A. Castagna  and
N. S. Stoloff
M. Shea
Affiliation:
Materials Engineering Department, Rensselaer Polytechnic Institute, Troy, New York 12180–3590
A. Castagna
Affiliation:
Materials Engineering Department, Rensselaer Polytechnic Institute, Troy, New York 12180–3590
N. S. Stoloff
Affiliation:
Materials Engineering Department, Rensselaer Polytechnic Institute, Troy, New York 12180–3590
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Abstract

This paper deals with the role of charging conditions and strain rate on the embrittlement of several Fe.Al and Fe3Al alloys. Fracture paths are transgranular or mixed mode in both air and after precharging of the iron aluminides, unlike the intergranular cracking typical of Ll2 superlattices exposed to hydrogen. The fractographic observations are consistent with a decohesion mechanism. The role of long range order in transport of hydrogen will be discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 213: Symposium Q – High-Temperature Ordered Intermetallic Alloys IV , 1990 , 609
Copyright
Copyright © Materials Research Society 1991

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References

REFERENCES

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