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The role of grain boundaries in hydrogen diffusion in metals at 25 CThe effect of grain size on hydrogen diffusion at 25 C was examined for 4340 steel (body-centered cubic) and for Inconel 718 (face-centered cubic). It was found that the effect of grain size is important for body-centered cubic structures, but plays a much less important role in face centered cubic structures. Accurate measurements of hydrogen desorption coefficients during hydrogen desorption show that these are not greatly different for both types of structures.
Document ID
19930019854
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Danford, M. D.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 6, 2013
Publication Date
June 1, 1993
Subject Category
Metallic Materials
Report/Patent Number
NAS 1.15:108407
NASA-TM-108407
Accession Number
93N29043
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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