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Hardness and tensile strength of multifilamentary metal–matrix composite superconductors for the Large Hadron Collider (LHC)

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Abstract

Conventional indentation hardness measurements to obtain load independent Vickers hardness values for the different phases in multifilamentary superconducting (SC) wires are described. The concept of composite hardness is validated for a binary metal–matrix metal–filament Nb–Ti/Cu composite wire. The tensile materials properties of the individual wire components are estimated from their indentation hardness. The potential and limitations of this approach are critically discussed, based on a comparison with ensile test results obtained for wires and extracted Nb–Ti filaments.

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Acknowledgements

We are grateful to L. Thilly from LMP Poitiers for helpful discussions and to M. Bistritz, G. Kalinka, M. Finn and S. Glaubitz from the BAM for tensile testing of single Nb–Ti filaments and Nb–Ti composite wire samples.

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Authors and Affiliations

  1. European Organization for Nuclear Research (CERN), Geneva, 1211, Switzerland

    Christian Scheuerlein, Thierry Boutboul, Daniel Leroy & Luc Oberli

  2. Bundesanstalt für Materialforschung und –prüfung (BAM), Berlin, Germany

    Birgit Rehmer

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  1. Christian Scheuerlein
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  2. Thierry Boutboul
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  3. Daniel Leroy
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  4. Luc Oberli
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  5. Birgit Rehmer
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Correspondence to Christian Scheuerlein.

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Scheuerlein, C., Boutboul, T., Leroy, D. et al. Hardness and tensile strength of multifilamentary metal–matrix composite superconductors for the Large Hadron Collider (LHC). J Mater Sci 42, 4298–4307 (2007). https://doi.org/10.1007/s10853-006-0633-3

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  • DOI: https://doi.org/10.1007/s10853-006-0633-3

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