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Unconventional deformation mechanism in nanocrystalline metals?

  • H. van Swygenhoven EMAIL logo , P. M. Derlet , Z. Budrovic und A. Hasnaoui
Veröffentlicht/Copyright: 7. Februar 2022
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 94 Heft 10

Abstract

In this paper, suggestions from molecular dynamics on the plastic deformation mechanism of nanocrystalline (nc) fcc metals are discussed. Investigation of the local average stress in the grain boundaries during deformation highlights the role of the non-equilibrium grain boundary structure in both inter- and intra-deformation processes. The relevance of the mechanism suggested by computer simulations is discussed in terms of the inherent restrictions of the technique and experimental observations.

Keywords: Computer simulations; Nanocrystal; Grain boundaries; Dislocations

Dedicated to Professor Dr. Dr. h. c. Herbert Gleiter on the occasion of his 65th birthday

Dr. Helena van Swygenhoven Paul Scherrer Institute CH-5232 Villigen, Switzerland Tel.: +41 56 310 2931 Fax: +41 56 310 3131

  1. This work was supported by the Swiss NSF Grant No. 21–65152.01.

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Received: 2003-05-27
Published Online: 2022-02-07

© 2003 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. From atomistics to macro-behavior: structural superplasticity in micro- and nano-crystalline materials
  4. Interface stress in nanocrystalline materials
  5. Microstructure, frequency and localisation of pseudo-elastic fatigue strain in NiTi
  6. Intercrystalline defects and some properties of electrodeposited nanocrystalline nickel and its alloys
  7. Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3
  8. Annealing treatments to enhance thermal and mechanical stability of ultrafine-grained metals produced by severe plastic deformation
  9. Nanoceramics by chemical vapour synthesis
  10. Deformation mechanism and inverse Hall – Petch behavior in nanocrystalline materials
  11. Simulations of the inert gas condensation processes
  12. Unconventional deformation mechanism in nanocrystalline metals?
  13. Alloying reactions in nanostructured multilayers during intense deformation
  14. Impact of grain boundary character on grain boundary kinetics
  15. Nanostructured (CoxFe1– x)3–yO4 spinel – mechanochemical synthesis
  16. Nanostructure formation and thermal stability of nanophase materials prepared by mechanical means
  17. Low-temperature plasma nitriding of AISI 304 stainless steel with nano-structured surface layer
  18. New materials from non-intuitive composite effects
  19. On the line defects associated with grain boundary junctions
  20. Young’s modulus in nanostructured metals
  21. The kinetics of phase formation in an ultra-thin nanoscale layer
  22. Notifications/Mitteilungen
  23. Personal/Personelles
  24. News
  25. DGM Events
https://doi.org/10.1515/ijmr-2003-0201
Schlagwörter für diesen Artikel
Computer simulations; Nanocrystal; Grain boundaries; Dislocations

Artikel in diesem Heft

  1. Frontmatter
  2. Articles/Aufsätze
  3. From atomistics to macro-behavior: structural superplasticity in micro- and nano-crystalline materials
  4. Interface stress in nanocrystalline materials
  5. Microstructure, frequency and localisation of pseudo-elastic fatigue strain in NiTi
  6. Intercrystalline defects and some properties of electrodeposited nanocrystalline nickel and its alloys
  7. Positrons as chemically sensitive probes in interfaces of multicomponent complex materials: Nanocrystalline Fe90Zr7B3
  8. Annealing treatments to enhance thermal and mechanical stability of ultrafine-grained metals produced by severe plastic deformation
  9. Nanoceramics by chemical vapour synthesis
  10. Deformation mechanism and inverse Hall – Petch behavior in nanocrystalline materials
  11. Simulations of the inert gas condensation processes
  12. Unconventional deformation mechanism in nanocrystalline metals?
  13. Alloying reactions in nanostructured multilayers during intense deformation
  14. Impact of grain boundary character on grain boundary kinetics
  15. Nanostructured (CoxFe1– x)3–yO4 spinel – mechanochemical synthesis
  16. Nanostructure formation and thermal stability of nanophase materials prepared by mechanical means
  17. Low-temperature plasma nitriding of AISI 304 stainless steel with nano-structured surface layer
  18. New materials from non-intuitive composite effects
  19. On the line defects associated with grain boundary junctions
  20. Young’s modulus in nanostructured metals
  21. The kinetics of phase formation in an ultra-thin nanoscale layer
  22. Notifications/Mitteilungen
  23. Personal/Personelles
  24. News
  25. DGM Events
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