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The P–h2 relationship on load–displacement curve considering pile-up deformation mode in instrumented indentation

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Abstract

A microhardness tester equipped with a Vickers indenter allows the determination of mechanical properties of a large variety of materials by analyzing load–displacement curves. In present work, a new model to compute the coefficient of proportionality K (named K-factor) between P and h relating to the pile-up have been developed. It was proved that indenter tip defect must be absolutely considered for an accurate determination of the contact area reducing an overestimation of mechanical properties and better fitting the loading curve. The proposed model is validated on a large variety of materials, i.e. carbides, nitrides and oxides showing sink-in phenomenon and steel, stainless steel, brass, bronze and copper having pile-up deformation mode. The model is compared with previous developed ones for sink-in and pile-up that can be easily applied but ignoring deformation mode and discarding the indenter defects will lead to not quite right no phenomenologically representative mechanical properties.

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Acknowledgments

This research was supported by the General Directorate of Scientific Research and Technological Development of Algeria (DGRSDT: Under the authority of the Ministry of Higher Education and Scientific Research in charge of scientific research).

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Authors and Affiliations

  1. Department of Mechanical Engineering, Ahmed Zabana University of Relizane, 48000, Relizane, Algeria

    S. Habibi, D. Chicot, A. Mejias, B. Boutabout, E. Zareb, D. E. Semsoum, S. Benaissa, A. Mezough & H. Merzouk

  2. Univ. Lille, ULR 4515, 59000, Lille, France

    S. Habibi, D. Chicot, A. Mejias, B. Boutabout, E. Zareb, D. E. Semsoum, S. Benaissa, A. Mezough & H. Merzouk

  3. IUTA, Département GMP, Univ. Lille, 59650, Villeneuve d’Ascq, France

    S. Habibi, D. Chicot, A. Mejias, B. Boutabout, E. Zareb, D. E. Semsoum, S. Benaissa, A. Mezough & H. Merzouk

  4. Department of Mechanical Engineering, DjillaliLiabes University of Sidi Bel-Abbès, 22000, Sidi Bel-Abbès, Algeria

    S. Habibi, D. Chicot, A. Mejias, B. Boutabout, E. Zareb, D. E. Semsoum, S. Benaissa, A. Mezough & H. Merzouk

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  1. S. Habibi
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  2. D. Chicot
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  3. A. Mejias
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  6. D. E. Semsoum
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  9. H. Merzouk
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The manuscript has been compiled with contributions from all authors. All authors have approved the final version of the manuscript.

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Correspondence to S. Habibi.

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The authors state that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this article.

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Habibi, S., Chicot, D., Mejias, A. et al. The P–h2 relationship on load–displacement curve considering pile-up deformation mode in instrumented indentation. Journal of Materials Research 36, 3074–3085 (2021). https://doi.org/10.1557/s43578-021-00286-3

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  • DOI: https://doi.org/10.1557/s43578-021-00286-3

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