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Effect of Nb–V addition on the mechanical behaviour and structural stability of ultrafine grained steels

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Published/Copyright: May 23, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 98 Issue 4

Abstract

A study is presented on the microstructural evolution and mechanical behaviour of three ultrafine grained steels produced by severe plastic deformation. Two Nb – V microalloyed steel grades differing only in their Nb content and a C – Mn steel were extensively refined at 773 K by caliber rolling to a reduction of section of the order of 98 %. Grain stability and evolution of mechanical properties during annealing at 873 K were then investigated.

It was demonstrated that tailored annealing treatments lead to a modification of the tensile behaviour of the ultrafine steels, with a more satisfactory combination of strength and uniform elongation. Nb – V microalloying contributed to increasing the stability of the grain structure and allowed achieving slightly improved properties with respect to the C – Mn grade.

Keywords: Ultrafine grain; Steel; Strain hardening; Annealing; Microstructure
* Correspondence address, Prof. Maurizio Vedani, Politecnico di Milano, Dipartimento di Meccanica, Via G. La Masa 34, I-20156 Milano, Italy, Tel.: +39 02 2399 8230, Fax: +39 02 2399 8202, E-mail:

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Received: 2006-10-18
Accepted: 2007-1-24
Published Online: 2013-05-23
Published in Print: 2007-04-01

© 2007, Carl Hanser Verlag, München

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Ultrafine-grained materials: a personal perspective
  7. Retained coarse grains in bulk nanocrystalline Ni3Al
  8. The effect of grain size on strain rate sensitivity and activation volume – from nano to ufg nickel
  9. Thermal stability of ECAP processed pure Cu and CuZr
  10. Grain refinement and texture formation in torsion deformed NiAl
  11. Shear deformation of submicron-structured materials
  12. Non-microscopical methods for characterization of microstructures and properties of UFG metals
  13. Applied
  14. Deformation processing of massive nanostructured materials
  15. Effect of Nb–V addition on the mechanical behaviour and structural stability of ultrafine grained steels
  16. New trends in superplasticity in SPD-processed nanostructured materials
  17. Deformation behaviour, microstructure and processing of accumulative roll bonded aluminium alloy AA6016
  18. The influence of post-ECAP annealing on the properties of ultrafine-grained 5005 aluminum alloy sheet
  19. Enhancement in mechanical behavior and wear resistance of severe plastically deformed two-phase Zn–Al alloys
  20. Mechanical behavior of nanostructured metals and alloys in the 300–4.2 K temperature interval
  21. Notifications
  22. DGM News
https://doi.org/10.3139/146.101465
Keywords for this article
Ultrafine grain; Steel; Strain hardening; Annealing; Microstructure

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Basic
  6. Ultrafine-grained materials: a personal perspective
  7. Retained coarse grains in bulk nanocrystalline Ni3Al
  8. The effect of grain size on strain rate sensitivity and activation volume – from nano to ufg nickel
  9. Thermal stability of ECAP processed pure Cu and CuZr
  10. Grain refinement and texture formation in torsion deformed NiAl
  11. Shear deformation of submicron-structured materials
  12. Non-microscopical methods for characterization of microstructures and properties of UFG metals
  13. Applied
  14. Deformation processing of massive nanostructured materials
  15. Effect of Nb–V addition on the mechanical behaviour and structural stability of ultrafine grained steels
  16. New trends in superplasticity in SPD-processed nanostructured materials
  17. Deformation behaviour, microstructure and processing of accumulative roll bonded aluminium alloy AA6016
  18. The influence of post-ECAP annealing on the properties of ultrafine-grained 5005 aluminum alloy sheet
  19. Enhancement in mechanical behavior and wear resistance of severe plastically deformed two-phase Zn–Al alloys
  20. Mechanical behavior of nanostructured metals and alloys in the 300–4.2 K temperature interval
  21. Notifications
  22. DGM News
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