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Nanoindentation applied on a tungsten–copper composite before and after high-pressure torsion

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Published/Copyright: February 16, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 96 Issue 9

Abstract

Nanoindentation experiments were performed before and after severe plastic deformation of W–Cu composites at room temperature, 200, and 400 °C. The strains were induced by high-pressure torsion (HPT). For the highest degrees of deformation, a particle size of 10 – 20 nanometer was achieved. The nanohardness of copper increased remarkably with increasing deformation, the hardness of tungsten was enhanced only slightly. A temperature of 400 °C during HPT significantly lowered the Cu hardness, probably recrystallisation during HPT had taken place, the hardness of tungsten, however, kept unaffected. With decreasing particle size, the influence of the adjacent material on the measured properties increased as well as the scatter of hardness and modulus. Proceeding to very small particle and grain sizes, the particles became smaller than the size of the indent. Thus, hardness and modulus values reflected some average over that of pure tungsten and copper.

Keywords: Copper; Tungsten; High-pressure Torsion; Nanoindentation; Hardness
Dr. Thomas Schöberl Erich Schmid-Institut Jahnstraße 12, A-8700 Leoben, Österreich Tel.: +43 3842 804 304 Fax: +43 3842 804 116

Dedicated to Professor Dr. Dr. h. c. Hein Peter Stüwe on the occasion of his 75th birthday

  1. The authors gratefully acknowledge the financial support of this work by the Austrian Fonds zur Förderung der wissenschaftlichen Forschung under project number P17096-PHY.

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Received: 2005-04-07
Accepted: 2005-06-22
Published Online: 2022-02-16

© 2005 Carl Hanser Verlag, München

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  1. Frontmatter
  2. Kösterpreis
  3. Award/Preisverleihung
  4. Editorial
  5. Editorial
  6. Articles Basic
  7. Effect of interface strength on electromigration-induced inlaid copper interconnect degradation: Experiment and simulation
  8. Application of factor analysis in electron spectrometry (AES, XPS) for materials science
  9. Focussing and defocussing effects at radio frequency glow discharge optical emission spectroscopy analyses of thin films with partly nonconductive components
  10. Semi-flexible star-shaped molecules: conformational analysis of nano-segregated mesogens forming columnar liquid-crystal phases
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  13. Local texture and back-end defect in hot extruded AZ91 magnesium alloy
  14. A comparison of thermal stability in nanocrystalline Ni- and Co-based materials
  15. Microstructure and phase formation of Heusler thin film compounds
  16. Correlation between the average composition of coherent superlattice and the GMR properties of electrodeposited Co–Cu/Cu multilayers
  17. Articles Basic
  18. Towards a description of complex pearlite structures
  19. Modeling of axial strain in free-end torsion of textured copper
  20. Vacancies in plastically deformed copper
  21. An analytic and generalized formulation of the sin2 ψ-method
  22. Nanoindentation applied on a tungsten–copper composite before and after high-pressure torsion
  23. Articles Applied
  24. The local deformation behaviour of MMCs – an experimental study
  25. X-ray elastic constants determined by the combination of sin2 ψ and substrate-curvature methods
  26. Combining complementary techniques to study precipitates in steels
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  28. Notifications/Mitteilungen
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https://doi.org/10.1515/ijmr-2005-0182
Keywords for this article
Copper; Tungsten; High-pressure Torsion; Nanoindentation; Hardness

Articles in the same Issue

  1. Frontmatter
  2. Kösterpreis
  3. Award/Preisverleihung
  4. Editorial
  5. Editorial
  6. Articles Basic
  7. Effect of interface strength on electromigration-induced inlaid copper interconnect degradation: Experiment and simulation
  8. Application of factor analysis in electron spectrometry (AES, XPS) for materials science
  9. Focussing and defocussing effects at radio frequency glow discharge optical emission spectroscopy analyses of thin films with partly nonconductive components
  10. Semi-flexible star-shaped molecules: conformational analysis of nano-segregated mesogens forming columnar liquid-crystal phases
  11. Articles Applied
  12. Structure, properties and applications of diamond-like carbon coatings prepared by reactive magnetron sputtering
  13. Local texture and back-end defect in hot extruded AZ91 magnesium alloy
  14. A comparison of thermal stability in nanocrystalline Ni- and Co-based materials
  15. Microstructure and phase formation of Heusler thin film compounds
  16. Correlation between the average composition of coherent superlattice and the GMR properties of electrodeposited Co–Cu/Cu multilayers
  17. Articles Basic
  18. Towards a description of complex pearlite structures
  19. Modeling of axial strain in free-end torsion of textured copper
  20. Vacancies in plastically deformed copper
  21. An analytic and generalized formulation of the sin2 ψ-method
  22. Nanoindentation applied on a tungsten–copper composite before and after high-pressure torsion
  23. Articles Applied
  24. The local deformation behaviour of MMCs – an experimental study
  25. X-ray elastic constants determined by the combination of sin2 ψ and substrate-curvature methods
  26. Combining complementary techniques to study precipitates in steels
  27. Precipitation hardening in Mg–Zn–Sn alloys with minor additions of Ca and Si
  28. Notifications/Mitteilungen
  29. Personal
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