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Hydrogen and deformation: Nano- and microindentation studies

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Abstract

Utilizing indentation techniques coupled with atomic-force microscopy (AFM) and orientation-imaging microscopy (OIM), it is possible to identify both out-of-plane deformation and slip-band formation around nanoindentations. These effects are due to both strain hardening and cross slip. The effects of hydrogen on body-centered-cubic and face-centered-cubic alloys were tested using nano- and microindentation and show a distinctive change in deformation morphology. Localized slip steps on the surface were examined using OIM and AFM. The frequency of slip steps (number of planes between each step) is not significantly influenced by hydrogen concentration, but the overall height of each step is reduced in the presence of hydrogen.

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Authors and Affiliations

  1. the School of Mechanical and Materials Engineering, Washington State University, USA

    David Bahr (associate professor), David Field (associate professor) & Kevin Nibur (graduate student)

  2. the University of Wisconsin, USA

    Kevin Morasch (undergraduate student)

Authors
  1. David Bahr
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  2. David Field
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  3. Kevin Nibur
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  4. Kevin Morasch
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Additional information

For more information, contact David F. Bahr at Washington State University, Mechanical and Materials Engineering, PO Box 642920, Pullman, WA, 99164-2920 (509) 335-8523; fax (509) 335-4662; e-mail bahr@mme.wsu.edu

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Bahr, D., Field, D., Nibur, K. et al. Hydrogen and deformation: Nano- and microindentation studies. JOM 55, 47–50 (2003). https://doi.org/10.1007/s11837-003-0226-4

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  • DOI: https://doi.org/10.1007/s11837-003-0226-4

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