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Testing for hydrogen environment embrittlement - Primary and secondary influencesA somewhat phenomological overview of the hydrogen embrittlement process, both internal as well as external, is presented in a effort to make more clear the type of parameters which must be considered in the selection of a test method and test procedure so that the resulting data may be meaningfully applied to real engineering structures. What are believed to be the three primary influences on the embrittlement process are considered - the original location and form of the hydrogen, the transport reactions involved in the transport of hydrogen from its origin to some point it can interact with the metal to cause embrittlement, and the embrittlement interaction itself. Additionally, a few of the large number of secondary influences on the embrittlement process are discussed, for example, the influence of impurity species in the environment, surface hydride films, and surface oxide films.
Document ID
19740050463
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Nelson, H. G.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1974
Subject Category
Machine Elements And Processes
Meeting Information
Meeting: Symposium on Hydrogen embrittlement testing
Location: Los Angeles, CA
Start Date: June 25, 1972
End Date: June 30, 1972
Accession Number
74A33213
Distribution Limits
Public
Copyright
Other

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