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Study of the hydrogen internal friction peak in Nb-10 At. Pct V in the presence of oxygen

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Abstract

Low concentrations of hydrogen in Nb-10 at. pct V yield a relatively broad internal friction peak at low temperatures, which is interpreted as a Snoek-type relaxation peak. The broadening is attributed to hydrogen atoms occupying a spectrum of energy levels caused by a random distribution of vanadium in niobium, such that at different frequencies, different energy levels are probed. The major aim of the present study was to determine the effects of oxygen on this hydrogen peak. A small decrease in peak height and a small increase of the broadening of the peak were observed, but there was no change in the activation parameters. It is concluded that oxygen and hydrogen interact weakly in this alloy, if at all. This supports earlier work in which it was concluded that there is no convincing evidence for a synergistic effect of oxygen and hydrogen on the mechanical properties of this alloy.

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Authors and Affiliations

  1. Ames Laboratory, Iowa State University, 50011, Ames, IA

    O. Buck (Senior Metallurgist)

  2. Department of Materials Science and Engineering and Ames Laboratory, Iowa State University, 50011, Ames, IA

    O. N. Carlson (Professor Emeritus)

Authors
  1. O. Buck
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  2. H. Indrawirawan
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  3. O. N. Carlson
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Formerly Graduate Student at Ames Laboratory, is living in Indonesia.

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Buck, O., Indrawirawan, H. & Carlson, O.N. Study of the hydrogen internal friction peak in Nb-10 At. Pct V in the presence of oxygen. Metall Trans A 20, 1215–1219 (1989). https://doi.org/10.1007/BF02647403

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  • DOI: https://doi.org/10.1007/BF02647403

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