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Effect of thermomechanical treatment on the microstructures and mechanical properties of an ultrafine grained steel using bainite starting microstructure

  • Reza Gostariani , Ahmad Kermanpur and Abbas Najafizadeh
Published/Copyright: June 3, 2019
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 110 Issue 6

Abstract

The cold rolling and subsequent annealing of microstructures with a high percentage of bainite is one of the promising thermomechanical treatments for grain refinement in low-alloy steels. In this research, the bainite microstructure was formed in the steel DIN 1.5715 by austenitizing at 1143 K followed by quenching in a salt-bath at 688 K. The specimens were then cold rolled to 90 % reduction in thickness followed by annealing at 773–923 K for different times. An ultrafine grained ferrite microstructure was developed possessing the best strength–ductility balance after 90 % cold rolling followed by annealing at 923 K for 2 400 s.

Keywords: Thermomechanical treatment; Low alloy steel; Bainite; Ultrafine grained structure
∗Correspondence address, Reza Gostariani, Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran, Tel/Fax: +98 3133915738, Fax: +98 3133912752, e-mail: ,

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Received: 2018-10-17
Accepted: 2019-01-22
Published Online: 2019-06-03
Published in Print: 2019-06-12

© 2019, Carl Hanser Verlag, München

Articles in the same Issue

  1. Original Contributions
  2. Experimental investigation of gas/slag/matte/tridymite equilibria in the Cu–Fe–O–S–Si system in controlled gas atmosphere at T = 1 200 °C and P(SO2) = 0.1 atm
  3. Thermodynamic calculation of phase equilibria in the Bi–Mg–Zn ternary system
  4. Effect of pre-rafting on creep properties of Ni-based single crystal superalloy
  5. Effect of thermomechanical treatment on the microstructures and mechanical properties of an ultrafine grained steel using bainite starting microstructure
  6. Deformation response and microstructural evolution of as-cast Mg alloys AM30 and AM50 during hot compression
  7. Effects of graphene nanoplatelets on the tribological, mechanical, and thermal properties of Mg-3Al alloy nanocomposites
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  11. Short Communications
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https://doi.org/10.3139/146.111771
Keywords for this article
Thermomechanical treatment; Low alloy steel; Bainite; Ultrafine grained structure

Articles in the same Issue

  1. Original Contributions
  2. Experimental investigation of gas/slag/matte/tridymite equilibria in the Cu–Fe–O–S–Si system in controlled gas atmosphere at T = 1 200 °C and P(SO2) = 0.1 atm
  3. Thermodynamic calculation of phase equilibria in the Bi–Mg–Zn ternary system
  4. Effect of pre-rafting on creep properties of Ni-based single crystal superalloy
  5. Effect of thermomechanical treatment on the microstructures and mechanical properties of an ultrafine grained steel using bainite starting microstructure
  6. Deformation response and microstructural evolution of as-cast Mg alloys AM30 and AM50 during hot compression
  7. Effects of graphene nanoplatelets on the tribological, mechanical, and thermal properties of Mg-3Al alloy nanocomposites
  8. Increasing cold workability of Ti-6Al-4V alloy via thermo-mechanical processing: simulation and experiment
  9. Synthesis, characterization, and possible application as sorbents of new low-cost aluminosilicate materials with different Si/Al ratios
  10. Self-assembly of Pd@Au core/shell nanosheets used as a highly sensitive SERS substrate based on the determination of trace fluorescent dye
  11. Short Communications
  12. On the material characteristics of a high carbon cast austenitic stainless steel after solution annealing followed by quenching in a CNT nanofluid
  13. Influence of in-situ Al2O3 content on mechanical properties of Al2O3 reinforced Fe–Cr–Ni alloys
  14. Novel synthesis of Ti2SC powder using FeS2 as a sulphur source
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