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A unified description of creep in pure and dispersion-strengthened copper

  • Martin Heilmaier EMAIL logo , Heinrich Kestler and Jeffery C. Gibeling
Published/Copyright: January 3, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 93 Issue 7

Abstract

A constitutive model for creep deformation in pure and dispersion-strengthened copper is presented. This description reproduces the characteristic features of steady-state and constant-structure creep with a single set of microstructurally founded parameters. In particular, the stress and temperature dependences of the creep resistance are adequately represented without introducing artificially high and, therefore, physically questionable values for the stress exponent and the activation energy of creep.

Abstract

Es wird ein konstitutives Modell zum Kriechverhalten von reinen und dispersionsgehärteten Metallen vorgestellt. Die Verifizierung an reinem Kupfer und oxiddispersionsgehärtetem Kupfer ergibt, dass die Charakteristika von stätionärem und transientem Kriechen bei konstanter Struktur im wesentlichen mit einem Satz mikrostrukturell begründeter Parameter wiedergegeben werden. Insbesondere wird die Spannungs- und Temperaturabhängigkeit des Kriechwiderstandes korrekt dargestellt.

Keywords: Copper; Steady-state creep; Constant-structure creep; Dispersion strengthening; Constitutive equations

Dedicated to Professor Dr. Haël Mughrabi on the occasion of his 65th birthday

This paper is based on work supported by the National Science Foundation under Grant DMR-92-08549. One of the authors (M. H.) would like to thank the Alexander von Humboldt Foundation for supporting a stay at UC Davis through the Feodor-Lynen post-contact program. M. H. and H. K. are especially grateful to Prof. Dr. Haël Mughrabi for his dedicated teaching and continuous support throughout their career.

Dr. M. Heilmaier Plansee AG, Technology Center A-6600 Reutte/Tyrolia, Austria Tel.: +43 5672 600 2766 Fax: +43 5672 600 536

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Received: 2002-02-18
Published Online: 2022-01-03

© 2002 Carl Hanser Verlag, München

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles/Aufsätze
  5. A model for the work hardening of WC–Co “hard metals”
  6. On the dispersion strengthening mechanisms in ODS materials
  7. Effect of hydrogen on the mechanical properties of the β titanium alloy Timetal® 21S
  8. Cyclic deformation behaviour of (α + β) titanium alloys under complex mechanical and physiological loading conditions
  9. Assessment of the influence of interdendritic shrinkage cavities on the thermo-mechanical fatigue behaviour of the nickel-base superalloy MAR-M247LC
  10. Effects of static strain aging on residual stress stability and alternating bending strength of shot peened AISI 4140
  11. On the possibilities to enhance the fatigue properties of ultrafine-grained metals
  12. New method of determining stress relaxation behavior in creep machines by controlled unloading
  13. Creep of binary Ni-rich NiTi shape memory alloys and the influence of pre-creep on martensitic transformations
  14. Interaction of high-cycle fatigue with high-temperature creep in superalloy single crystals
  15. A unified description of creep in pure and dispersion-strengthened copper
  16. A new interpretation of flow-stress measurements of high-purity NiAl below room temperature
  17. A mesoscopic plasticity model accounting for spatial fluctuations of plastic strains, internal stresses and dislocation densities
  18. Behavior of X-ray peak widths in the Wilkens model of a restrictedly random distribution of dislocations
  19. Dislocation structure and crystallite size distribution in hexagonal nanomaterials from X-ray peak profile analysis
  20. Werden gewichtsoptimiert konstruierte Bauteile durch die Verwendung von Leichtmetallen wirklich leichter?*)
  21. Strain-induced martensite formation in metastable austenitic steels with varying carbon content
  22. Isothermal bainitic transformation in low alloy steels: factors limiting prediction of the resulting material’s properties
  23. Fatigue damage evolution in a particulate-reinforced metal matrix composite determined by acoustic emission and compliance method
  24. Microstructure and modification mechanisms of Si phase in as-thixoformed alloy A356
  25. Influence of size effect on microstructural changes in cyclically deformed polycrystalline nickel
  26. Self-diffusion of 71Ge and 31Si in Si –Ge alloys
  27. On localised corrosive attack, stress corrosion cracking and corrosion fatigue effects in a hardmetal cutting-tool material
  28. The internal stress during growth of SiC single crystals
  29. Notifications/Mitteilungen
  30. Personal/Personelles
  31. Books/Bücher
  32. DGM Conferences/Training
https://doi.org/10.3139/ijmr-2002-0113
Keywords for this article
Copper; Steady-state creep; Constant-structure creep; Dispersion strengthening; Constitutive equations

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles/Aufsätze
  5. A model for the work hardening of WC–Co “hard metals”
  6. On the dispersion strengthening mechanisms in ODS materials
  7. Effect of hydrogen on the mechanical properties of the β titanium alloy Timetal® 21S
  8. Cyclic deformation behaviour of (α + β) titanium alloys under complex mechanical and physiological loading conditions
  9. Assessment of the influence of interdendritic shrinkage cavities on the thermo-mechanical fatigue behaviour of the nickel-base superalloy MAR-M247LC
  10. Effects of static strain aging on residual stress stability and alternating bending strength of shot peened AISI 4140
  11. On the possibilities to enhance the fatigue properties of ultrafine-grained metals
  12. New method of determining stress relaxation behavior in creep machines by controlled unloading
  13. Creep of binary Ni-rich NiTi shape memory alloys and the influence of pre-creep on martensitic transformations
  14. Interaction of high-cycle fatigue with high-temperature creep in superalloy single crystals
  15. A unified description of creep in pure and dispersion-strengthened copper
  16. A new interpretation of flow-stress measurements of high-purity NiAl below room temperature
  17. A mesoscopic plasticity model accounting for spatial fluctuations of plastic strains, internal stresses and dislocation densities
  18. Behavior of X-ray peak widths in the Wilkens model of a restrictedly random distribution of dislocations
  19. Dislocation structure and crystallite size distribution in hexagonal nanomaterials from X-ray peak profile analysis
  20. Werden gewichtsoptimiert konstruierte Bauteile durch die Verwendung von Leichtmetallen wirklich leichter?*)
  21. Strain-induced martensite formation in metastable austenitic steels with varying carbon content
  22. Isothermal bainitic transformation in low alloy steels: factors limiting prediction of the resulting material’s properties
  23. Fatigue damage evolution in a particulate-reinforced metal matrix composite determined by acoustic emission and compliance method
  24. Microstructure and modification mechanisms of Si phase in as-thixoformed alloy A356
  25. Influence of size effect on microstructural changes in cyclically deformed polycrystalline nickel
  26. Self-diffusion of 71Ge and 31Si in Si –Ge alloys
  27. On localised corrosive attack, stress corrosion cracking and corrosion fatigue effects in a hardmetal cutting-tool material
  28. The internal stress during growth of SiC single crystals
  29. Notifications/Mitteilungen
  30. Personal/Personelles
  31. Books/Bücher
  32. DGM Conferences/Training
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