Startseite Implications of linear relationships between local and macroscopic flow stresses in the composite model
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Implications of linear relationships between local and macroscopic flow stresses in the composite model

  • Hael Mughrabi
Veröffentlicht/Copyright: 31. Mai 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 97 Heft 5

Abstract

Earlier results obtained by X-ray diffraction studies on tensile-deformed [001]-orientated copper single crystals have recently been re-assessed with respect to the evolution of the long-range internal stresses and the local flow stresses of the dislocation cell walls and the cell interiors. It was noted that the magnitudes of the long-range internal stresses and of the local flow stresses increase in good approximation linearly with the applied macroscopic flow stress. In the present work, the results of a similar analysis of earlier published X-ray data, which were obtained on tensile-deformed [001]-orientated Cu–Mn single crystals, are reported. When the friction stress of the alloy is taken into account, similar linear relationships to the case of deformed [001]-orientated copper single crystals were obtained. The implications of these results are analyzed in the framework of the composite model of crystal plasticity. It is shown that linear relationships of the type considered imply, in terms of the composite model, that the ratio between the local dislocation densities in the dislocation cell walls and the cell interiors must remain constant during deformation. This result is discussed with respect to the experimentally obtained data on local dislocation densities.

Keywords: Plastic deformation; Composite model; Long-range internal stresses; Local flow stresses
* Correspondence address: Prof. Hael Mughrabi, Institut für WerkstoffwissenschaftenAllgemeine Werkstoffeigenschaften, Universität Erlangen–Nürnberg, Martensstr. 5, D-91058 Erlangen, Germany, Tel.: +4991318527482, Fax: +4991318527504. E-mail:

Dedicated to Professor Dr. Fritz Aldinger on the occasion of his 65th birthday

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Received: 2006-12-7
Accepted: 2006-1-23
Published Online: 2013-05-31
Published in Print: 2006-05-01

© 2006, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Three-dimensional printing of TiAl3/Al2O3 composites
  7. Microemulsion mediated synthesis of nanocrystalline BaTiO3: possibilities, potential and perspectives
  8. Solid-State 17O NMR studies on Yttria-stabilized zirconia
  9. Twinning in ultrathin silicon nanowires
  10. Re-optimization of the Mg–Sb system under topological constraints
  11. Mg-rich phase equilibria of Mg–Mn–Zn alloys analyzed by computational thermochemistry
  12. The In–Pt–Sb phase diagram
  13. Thermodynamic evaluation of the Al–Cr–C system
  14. Thermodynamic description of the Ni–Si–Ti ternary system
  15. Enthalpies of formation measurements and thermodynamic description of the Ag–Cu–Zn system
  16. Thermodynamic assessment of the Mn–Cr–O system for solid oxide fuel cell (SOFC) materials
  17. Subsolidus phase equilibria in the CeO2−x–SiO2–ZrO2 system: An experimental study
  18. Generalized Maugis–Dugdale model of an elastic cylinder in non-slipping adhesive contact with a stretched substrate
  19. Implications of linear relationships between local and macroscopic flow stresses in the composite model
  20. Applied
  21. Gas-phase surface alloying under “kinetic control”: A novel approach to improving the surface properties of titanium alloys
  22. Thin film formation by oriented attachment of polymer-capped nanocrystalline ZnO
  23. The sintering mechanism and microstructure evolution in SiC–AlN ceramics studiedby EFTEM
  24. Thermal evolution of free volumes and of crystallization in amorphous Si–B–C–N ceramics
  25. High-temperature deformation behavior of nanocrystalline precursor-derived Si–B–C–N ceramics in controlled atmosphere
  26. Nanopowder dispersion and spray-drying process: the case of Cr2O3
  27. Electroless deposition of brushite (CaHPO4 · 2H2O) crystals on Ti–6Al–4V at room temperature
  28. The role of chemisorbed anions in the aqueous processing of AlN powder
  29. The influence of porosity on the electrical properties of liquid-phase sintered silicon carbide
  30. Development of high-temperature thermoelectric materials based on SrTiO3-layered perovskites
  31. The influence of the preparation method on the microstructure and properties of Al2O3/TiN nanocomposites
  32. Infrared properties of sintered α-MnSe
  33. Quasi-equilibrium sintering of particle clusters containing Bernal holes
  34. Design of metal ceramic composites
  35. Notifications
  36. DGM News
https://doi.org/10.3139/146.101276
Schlagwörter für diesen Artikel
Plastic deformation; Composite model; Long-range internal stresses; Local flow stresses

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Three-dimensional printing of TiAl3/Al2O3 composites
  7. Microemulsion mediated synthesis of nanocrystalline BaTiO3: possibilities, potential and perspectives
  8. Solid-State 17O NMR studies on Yttria-stabilized zirconia
  9. Twinning in ultrathin silicon nanowires
  10. Re-optimization of the Mg–Sb system under topological constraints
  11. Mg-rich phase equilibria of Mg–Mn–Zn alloys analyzed by computational thermochemistry
  12. The In–Pt–Sb phase diagram
  13. Thermodynamic evaluation of the Al–Cr–C system
  14. Thermodynamic description of the Ni–Si–Ti ternary system
  15. Enthalpies of formation measurements and thermodynamic description of the Ag–Cu–Zn system
  16. Thermodynamic assessment of the Mn–Cr–O system for solid oxide fuel cell (SOFC) materials
  17. Subsolidus phase equilibria in the CeO2−x–SiO2–ZrO2 system: An experimental study
  18. Generalized Maugis–Dugdale model of an elastic cylinder in non-slipping adhesive contact with a stretched substrate
  19. Implications of linear relationships between local and macroscopic flow stresses in the composite model
  20. Applied
  21. Gas-phase surface alloying under “kinetic control”: A novel approach to improving the surface properties of titanium alloys
  22. Thin film formation by oriented attachment of polymer-capped nanocrystalline ZnO
  23. The sintering mechanism and microstructure evolution in SiC–AlN ceramics studiedby EFTEM
  24. Thermal evolution of free volumes and of crystallization in amorphous Si–B–C–N ceramics
  25. High-temperature deformation behavior of nanocrystalline precursor-derived Si–B–C–N ceramics in controlled atmosphere
  26. Nanopowder dispersion and spray-drying process: the case of Cr2O3
  27. Electroless deposition of brushite (CaHPO4 · 2H2O) crystals on Ti–6Al–4V at room temperature
  28. The role of chemisorbed anions in the aqueous processing of AlN powder
  29. The influence of porosity on the electrical properties of liquid-phase sintered silicon carbide
  30. Development of high-temperature thermoelectric materials based on SrTiO3-layered perovskites
  31. The influence of the preparation method on the microstructure and properties of Al2O3/TiN nanocomposites
  32. Infrared properties of sintered α-MnSe
  33. Quasi-equilibrium sintering of particle clusters containing Bernal holes
  34. Design of metal ceramic composites
  35. Notifications
  36. DGM News
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