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Evidence for Dislocation Transport of Hydrogen in Aluminum

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Abstract

The use of concurrent plastic straining during cathodic charging of equiaxed-grain, high purity 7075 aluminum has provided evidence that dislocations can transport large amounts of hydrogen deep into the interior of the alloy; as a direct consequence of this, highly brittle intergranular fracture ensues. This effect is most pronounced for heat treatments that produce a microstructure which allows for planar dislocation arrays and long slip lengths. The implications of these findings to the occurrence of hydrogen embrittlement in other alloy systems have been assessed.

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Authors and Affiliations

  1. Brown Boveri Research Center, CH-5405, Baden, Switzerland

    J. Albrecht

  2. Department of Metallurgical Engineering and Materials Science, Carnegie-Mellon University, 15213, Pittsburgh, PA

    I. M. Bernstein (Professor) & Anthony W. Thompson (Professor)

Authors
  1. J. Albrecht
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  2. I. M. Bernstein
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  3. Anthony W. Thompson
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J. ALBRECHT, formerly Postdoctoral Associate at Carnegie-Mellon University,.

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Albrecht, J., Bernstein, I.M. & Thompson, A.W. Evidence for Dislocation Transport of Hydrogen in Aluminum. Metall Trans A 13, 811–820 (1982). https://doi.org/10.1007/BF02642394

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  • DOI: https://doi.org/10.1007/BF02642394

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