Effect of Finishing Temperature on Mechanical Properties of a Nb-Microalloyed Steel Sheet

Daavood Mirahmadi Khaki; A. Akbarzadeh; Amir Abedi

doi:10.4028/www.scientific.net/AMR.129-131.1022

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 129-131Effect of Finishing Temperature on Mechanical...

Effect of Finishing Temperature on Mechanical Properties of a Nb-Microalloyed Steel Sheet

Abstract:

Thermo mechanical processing and controlled rolling of microalloyed steel sheets are affected by several factors. In this investigation, finishing temperature of rolling which is considered as the most effective parameters on the final mechanical properties of hot rolled products has been studied. For this purpose, three different finishing temperatures of 950, 900 and 850 °C below the non-recrystallization temperature and one temperature of 800 °C in the intercritical range were chosen. It is observed that decreasing the finishing temperature causes increase of strength and decrease of total elongation. This is accompanied by more grain refinement of microstructure and the morphology was changed from polygonal ferrite to acicular one. Findings of this research provide suitable connection among finishing temperature, microstructural features, and mechanical properties of hot rolled Nb-microalloyed steel sheets.

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Periodical:

Advanced Materials Research (Volumes 129-131)

Pages:

1022-1028

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.129-131.1022

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Online since:

August 2010

Authors:

Daavood Mirahmadi Khaki, A. Akbarzadeh, Amir Abedi

Keywords:

Controlled Hot Rolling, Finishing Temperature, Nb Microalloyed Steel, Thermo-Mechanical Processing

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