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Estimation of Dislocation Density in Metals from Hardness Measurements

  • A. A. H. AmeriEmail author
  • N. N. Elewa
  • M. Ashraf
  • J. P. Escobedo-Diaz
  • P. J. Hazell
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

A novel methodology to estimate the dislocation density in cubic metals by using microhardness measurements has been established. The proposed methodology is based on the Indention Size Effect (ISE) phenomena and strengthening mechanisms of materials at the micro-level. The methodology was validated by using experimental data of lean duplex stainless steel 2101 alloy. The results are confirmed via X-ray diffraction measurements and they substantiate that the proposed approach can be used as a general method to estimate dislocation density in metals.

Keywords

Hardness Microstructure Dislocations Lean duplex 

Notes

Acknowledgements

The authors would like to thank Prof. Sean Cadogan in the School of Physical, Environmental and Mathematical Sciences at The University of New South Wales Canberra for his support in performing X-ray diffraction experiments. Dr. Md. Quadir at Faculty of Science and Engineering, Curtin University is also acknowledged for his help with EBSD measurements. Moreover, the authors are grateful for the support of A/Prof. Jodie Bradby and Mr. Christopher Tanner in the Department of Electronic Materials Engineering in the Research School of Physics and Engineering at the Australian National University in conducting nanoindentation experiments.

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Copyright information

© The Minerals, Metals & Materials Society 2017

Authors and Affiliations

  • A. A. H. Ameri
    • 1
    Email author
  • N. N. Elewa
    • 2
  • M. Ashraf
    • 1
  • J. P. Escobedo-Diaz
    • 1
  • P. J. Hazell
    • 1
  1. 1.School of Engineering and Information TechnologyThe University of New South WalesCanberraAustralia
  2. 2.School of Physical, Environmental and Mathematical SciencesThe University of New South WalesCanberraAustralia

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