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On dynamic and static strain ageing in Cu-2at.% Mn polycrystals

  • H. Dierke , F. B. Klose , A. Nortmann und H. Neuhäuser
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 10

Abstract

Measurements of the yield points ΔσA on reloading after ageing at various stress levels (obtained by partial unloading of the tensile specimen) have been performed with Cu-2at.% Mn polycrystals at 313K (strain rate 310−5s−1). At these temperatures solute atoms are supposed to increase the effective obstacle strength (intersections of mobile with forest dislocations) by pipe diffusion from the forest to the mobile dislocations during the waiting time for thermal activation. The stress dependence ΔσA ∝ (σ*)1/3, (with the effective stress σ*) expected according to Friedel's equation is observed. This supports the intersection strengthening model and, hence, the pipe diffusion mechanism for static and dynamic strain ageing in the temperature and strain rate regime of this study.

Keywords: Static strain ageing; Dynamic strain ageing; Cu-2at.% Mn polycrystals; Intersection and line strengthening; Pipe diffusion

Dedicated to Professor Eckard Macherauch on the occasion of the 80th anniversary of his birth

* Correspondence address, Prof. Dr. H. Neuhäuser, Institut für Physik der Kondensierten Materie, Technische Universität Braunschweig, Mendelssohnstr. 3, D-38106 Braunschweig, Germany, Tel.: +495313915109, Fax: +495313915129, E-mail:

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Received: 2006-3-30
Accepted: 2006-7-9
Published Online: 2013-05-31
Published in Print: 2006-10-01

© 2006, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Herrn Prof. em. Dr. rer. nat. Dr.-Ing. E. h. mult. Prof. h. c. Dr. h. c. Eckard Macherauch zum 80. Geburtstag
  5. Basic
  6. Stability of residual stresses in longitudinally and transversely deep rolled sintered iron under quasistatic and cyclic loading
  7. Residual stresses in random-planar aluminium/Saffil® short-fibre composites deformed in different loading modes
  8. Thermal residual stress analysis in continuous Al2O3 fiber reinforced NiAl composites
  9. On the fatigue behavior of ultrafine-grained interstitial-free steel
  10. Laser Interference Metallurgy – using interference as a tool for micro/nano structuring
  11. On dynamic and static strain ageing in Cu-2at.% Mn polycrystals
  12. High thermal stability of mechanically-alloyed nanocrystalline Cu–Nb alloys
  13. Possibilities and limits in thermohydrogen processing of beta titanium alloy Timetal®10-2-3
  14. Applied
  15. Cube textured tapes for use in YBa2Cu3O7–δ-coated conductor applications
  16. Cavitation erosion of advanced ceramics in water
  17. Influence of tension–compression loading history on plastic deformation of Mg wrought alloy AZ31
  18. Microstructure and mechanical properties of the extruded Mg-alloys AZ31, AZ61, AZ80
  19. Mechanical properties and microstructural changes of ultrafine-grained AA6063T6 during high-cycle fatigue
  20. Analysis of failure behaviour of carbon/carbon composite made by chemical vapour infiltration considering fibre, matrix and interface properties
  21. Cooperating twin robots form a new X-ray diffractometer for stress analysis
  22. Grinding-induced microstructural gradients and residual stresses in the surface layers of carbon steel and pure tungsten
  23. Residual-stress-induced subsurface crack nucleation in titanium alloys
  24. Microstructure and fatigue strength of the roller-bearing steel 100Cr6 (SAE 52100) after two-step bainitisation and combined bainitic–martensitic heat treatment
  25. History
  26. Damage tolerance: fracture mechanics in design
  27. Description of flow curves over wide ranges of strain rate and temperature
  28. Mechanismen und Modellierung der Verformung und Schädigung keramischer Faserverbundwerkstoffe
  29. Notifications
  30. Personal
https://doi.org/10.3139/146.101376
Schlagwörter für diesen Artikel
Static strain ageing; Dynamic strain ageing; Cu-2at.% Mn polycrystals; Intersection and line strengthening; Pipe diffusion

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. Herrn Prof. em. Dr. rer. nat. Dr.-Ing. E. h. mult. Prof. h. c. Dr. h. c. Eckard Macherauch zum 80. Geburtstag
  5. Basic
  6. Stability of residual stresses in longitudinally and transversely deep rolled sintered iron under quasistatic and cyclic loading
  7. Residual stresses in random-planar aluminium/Saffil® short-fibre composites deformed in different loading modes
  8. Thermal residual stress analysis in continuous Al2O3 fiber reinforced NiAl composites
  9. On the fatigue behavior of ultrafine-grained interstitial-free steel
  10. Laser Interference Metallurgy – using interference as a tool for micro/nano structuring
  11. On dynamic and static strain ageing in Cu-2at.% Mn polycrystals
  12. High thermal stability of mechanically-alloyed nanocrystalline Cu–Nb alloys
  13. Possibilities and limits in thermohydrogen processing of beta titanium alloy Timetal®10-2-3
  14. Applied
  15. Cube textured tapes for use in YBa2Cu3O7–δ-coated conductor applications
  16. Cavitation erosion of advanced ceramics in water
  17. Influence of tension–compression loading history on plastic deformation of Mg wrought alloy AZ31
  18. Microstructure and mechanical properties of the extruded Mg-alloys AZ31, AZ61, AZ80
  19. Mechanical properties and microstructural changes of ultrafine-grained AA6063T6 during high-cycle fatigue
  20. Analysis of failure behaviour of carbon/carbon composite made by chemical vapour infiltration considering fibre, matrix and interface properties
  21. Cooperating twin robots form a new X-ray diffractometer for stress analysis
  22. Grinding-induced microstructural gradients and residual stresses in the surface layers of carbon steel and pure tungsten
  23. Residual-stress-induced subsurface crack nucleation in titanium alloys
  24. Microstructure and fatigue strength of the roller-bearing steel 100Cr6 (SAE 52100) after two-step bainitisation and combined bainitic–martensitic heat treatment
  25. History
  26. Damage tolerance: fracture mechanics in design
  27. Description of flow curves over wide ranges of strain rate and temperature
  28. Mechanismen und Modellierung der Verformung und Schädigung keramischer Faserverbundwerkstoffe
  29. Notifications
  30. Personal
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