Startseite Effect of temperature and strain rate on strain hardening and deformation mechanisms of high manganese austenitic steels
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Effect of temperature and strain rate on strain hardening and deformation mechanisms of high manganese austenitic steels

  • Annette Bäumer , José Antonio Jiménez und Wolfgang Bleck
Veröffentlicht/Copyright: 31. Mai 2013
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 101 Heft 6

Abstract

The effect of temperature and strain rate on the mechanical properties of three Fe – Mn austenitic steels with Mn contents of 20 mass.% or above has been studied by tensile tests performed at strain rates ranging from 3 × 10−3 to 200s−1 and at temperatures between −160 and +140 °C. In these steels mechanical properties and strain hardening behaviour result from the competition between different deformation mechanisms including homogeneous or inhomogeneous dislocation glide, strain induced twinning or martensite formation. Thus, the microstructure evolution during deformation was investigated. For two of the steels, a relation of the deformation mechanisms (twinning and dislocation glide) at room temperature with the grain size was found. On the other hand, for the third steel at temperatures lower than 60 °C martensite is progressively formed during deformation. For the three steels, a decreasing volume fraction of twins or martensite with increasing testing temperature was found leading consequently to a decrease in flow stress and strain hardening.

Keywords: Austenitic steel; Strain hardening; Dislocation glide; TRIP effect; TWIP effect
* Correspondence address, Dr.-Ing. Annette Bäumer, RWTH Aachen University, Department of Ferrous Metallurgy, Intzestraβe 1, D-52078 Aachen, Germany, E-mail:

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Received: 2008-11-11
Accepted: 2009-9-3
Published Online: 2013-05-31
Published in Print: 2010-06-01

© 2010, Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. IJMR's most downloaded papers from 2008 to the present: a review
  5. Basic
  6. Effect of temperature and strain rate on strain hardening and deformation mechanisms of high manganese austenitic steels
  7. Size effects resulting from local strain hardening; microstructural evaluation of Fe-3% Si and Cu deformed in tension and deep drawing using orientation gradient mapping (OGM)
  8. Microstructure of super-austenitic steels after long-term annealing
  9. Investigation of tensile–compressive yield asymmetry and the role of deformation twin in extruded pure magnesium
  10. Neutron diffraction study on liquid Al–Ni alloys
  11. Investigation of the atomic structure of molten As–Se alloys using X-ray diffraction
  12. A theoretical approach to the elastic behaviour of compact and hollow spherical particles reinforced metal-matrix composites
  13. Applied
  14. Adsorption of nucleotides on the rutile (110) surface
  15. Effect of cyclic heat treatment on the microstructures and mechanical properties of Ti–Si alloys
  16. Deleterious phases resulting from the induction bending of thick-walled super-duplex pipework
  17. Steady state creep in a rotating composite disc of variable thickness
  18. Influence of data conversion methods from torsion tests on the Garofalo equation parameters for a high nitrogen steel
  19. High-alloy ferritic cast irons with different graphite microstructures for exhaust manifolds and turbocharger housings
  20. Microstructure and mechanical properties of friction stir butt welded dissimilar pure copper/brass alloy plates
  21. The heat capacity measurements of CoSb3-based Skutterudite compounds
  22. DGM News
  23. DGM News
https://doi.org/10.3139/146.110333
Schlagwörter für diesen Artikel
Austenitic steel; Strain hardening; Dislocation glide; TRIP effect; TWIP effect

Artikel in diesem Heft

  1. Contents
  2. Contents
  3. Editorial
  4. IJMR's most downloaded papers from 2008 to the present: a review
  5. Basic
  6. Effect of temperature and strain rate on strain hardening and deformation mechanisms of high manganese austenitic steels
  7. Size effects resulting from local strain hardening; microstructural evaluation of Fe-3% Si and Cu deformed in tension and deep drawing using orientation gradient mapping (OGM)
  8. Microstructure of super-austenitic steels after long-term annealing
  9. Investigation of tensile–compressive yield asymmetry and the role of deformation twin in extruded pure magnesium
  10. Neutron diffraction study on liquid Al–Ni alloys
  11. Investigation of the atomic structure of molten As–Se alloys using X-ray diffraction
  12. A theoretical approach to the elastic behaviour of compact and hollow spherical particles reinforced metal-matrix composites
  13. Applied
  14. Adsorption of nucleotides on the rutile (110) surface
  15. Effect of cyclic heat treatment on the microstructures and mechanical properties of Ti–Si alloys
  16. Deleterious phases resulting from the induction bending of thick-walled super-duplex pipework
  17. Steady state creep in a rotating composite disc of variable thickness
  18. Influence of data conversion methods from torsion tests on the Garofalo equation parameters for a high nitrogen steel
  19. High-alloy ferritic cast irons with different graphite microstructures for exhaust manifolds and turbocharger housings
  20. Microstructure and mechanical properties of friction stir butt welded dissimilar pure copper/brass alloy plates
  21. The heat capacity measurements of CoSb3-based Skutterudite compounds
  22. DGM News
  23. DGM News
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