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Hydrogen partitioning in pure cast aluminum as determined by dynamic evolution rate measurementsHydrogen in pure aluminum can be found in two different states. One is related to a presence in gas-filled pores, while the other state involves the formation of a solid solution between hydrogen and aluminum. The considered investigation is concerned with the distribution of the hydrogen between various states. A dynamic technique is employed to measure the evolution of hydrogen from commercially available samples of polycrystalline pure aluminum under ultrahigh vacuum conditions. The obtained data are compared with the results of a statistical analysis concerning the porosity in the cast aluminum. It was found that more than 99 pct of the hydrogen in the aluminum is located in large pores. Less than 1 pct of the hydrogen is partitioned between the solid solution and the small pores.
Document ID
19820038707
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Outlaw, R. A.
(NASA Langley Research Center Hampton, VA, United States)
Peterson, D. T.
(NASA Langley Research Center Hampton, VA, United States)
Schmidt, F. A.
(U.S. Department of Energy, Ames Laboratory, Ames IA, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1981
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 12A
Subject Category
Metallic Materials
Accession Number
82A22242
Funding Number(s)
CONTRACT_GRANT: W-7405-ENG-82
Distribution Limits
Public
Copyright
Other

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