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Effect of martensite volume fraction on mechanical properties of dual-phase treated AISI-4012 sheet steels

  • B. Aksakal , F. Karaca and R. Arikan
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 101 Issue 5

Abstract

Hot rolled AISI-4012 sheet steels have been heat treated to obtain a ductile dual phase microstructure. The specimens were heat treated in the ferrite (α) and austenite (γ) phase region at temperatures of 740, 760, 790 and 820 °C and corresponding time intervals of 15, 30, 60 and 90 min and then quenched into water. Hardness measurements, tensile, bending, and impact tests were performed in order to determine the mechanical properties of the dual phase steel. These were examined with respect to the martensite volume fraction. Both the flow and tensile stresses increased whereas elongation decreased with increasing dual phase treatment temperature and martensite volume fraction. The optimum mechanical properties and the appropriate dual-phase microstructure are achieved at 740 and 760 °C annealing with subsequent water quenching. From examinations it was deduced that ductile fracture occurred in the tested samples.

Keywords: Hot rolled sheets; Dual phase; Microstructure; Mechanical properties
* Correspondence address, Prof. Dr. B. Aksakal, Firat University, Faculty of Tech. Edu, Dept. of Mech. EduElazig, Turkey. Tel.: +237 0000/4315, Fax: +90 424 236 7064, E-mail:

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Received: 2008-8-6
Accepted: 2010-2-9
Published Online: 2013-06-11
Published in Print: 2010-05-01

© 2010, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.110328
Keywords for this article
Hot rolled sheets; Dual phase; Microstructure; Mechanical properties

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Prof. Dr. Monika Feller-Kniepmeier 80th birthday
  5. Basic
  6. Model calculation of inoculation and experimental verification in two alloy-systems
  7. Enrichment of boron at grain boundaries of platinum-based alloys determined by electron energy loss spectroscopy in a transmission electron microscope
  8. Measurement of the lattice misfit of Pt–Al–Cr superalloy by convergent beam electron diffraction (CBED)
  9. Microstructural and micromechanical characterisation of a Pt–Al–Cr–Ni–Re alloy by means of transmission electron microscopy and nanoindentation
  10. X-ray reflections from the γ/γ′-microstructure of nickel-base superalloys: effect of the plane tilting
  11. Physicochemical properties and creep strength of a single crystal of nickel-base superalloy containing rhenium and ruthenium
  12. Interdependence between glass stability and phase formation sequence during crystallization of Zr46.8Ti8.2Cu7.5Ni10Be27.5 bulk glass
  13. On the formation of λ-MnAl4
  14. Applied
  15. Development of Ni–Mn-based alloys for the fast epitaxial braze-repair of single-crystalline nickel-based superalloys
  16. Influence of heat treatment and microstructure on the tensile pseudoelastic response of an Ni-rich NiTi shape memory alloy
  17. Microstructural stability of an Ni–Mo based Hastelloy after 10 MeV electron irradiation at high temperature
  18. Oxidation behaviour of TiAl-based intermetallic coatings on γ-TiAl alloys
  19. Oxidation and fatigue behaviour of γ-TiAl coated with HIPIMS CrAlYN/CrN nanoscale multilayer coatings and EB-PVD thermal barrier coatings
  20. On the stress corrosion cracking behaviour of 6XXX series aluminium alloys
  21. Investigation of surface film nanostructure and assessment of its impact on friction force stabilization during automotive braking
  22. Creep strength of a binary Al62Ti38 alloy
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  24. Effect of martensite volume fraction on mechanical properties of dual-phase treated AISI-4012 sheet steels
  25. The joint properties of dissimilar aluminum plates joined by friction stir welding
  26. Notification
  27. DGM News
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