Fulvio Siciliano

TL;DR: In this article, three rolling schedules are simulated by hot torsion tests and compared and the simulation analysis considered the production steps from reheating through the final accelerated cooling as well as the final product microstructures.

TL;DR: Extended abstract of a paper presented at Microscopy and Microanalysis 2005 in Honolulu, Hawaii, USA, July 31-August 4, 2005 as mentioned in this paper, presented by as mentioned in this paper.

Abstract: The use of thermomechanical control processing during hot rolling has played a significant role in improving the mechanical properties of steels in the past several decades. Accurate control of various metallurgical phenomena such as recrystallization, phase transformation and strain-induced precipitation has been the main target of steel industries around the world to push the properties of steels to their limit. Therefore, numerous physical and numerical simulations of hot rolling were developed to predict the microstructure and properties of steels during thermomechanical processing, which allows for quick optimization of manufacturing parameters. One of the most common techniques to physically simulate the actual hot rolling process in a laboratory scale is through hot torsion testing. In the present work, various grades of steels subjected to torsion simulation of hot strip and plate rolling were analyzed to determine the effect of deformation on the initiation of various metallurgical phenomena. The results show that high-temperature deformation can induce unusual metallurgical phenomena, such as dynamic phase transformation, which affects the final microstructure and mechanical properties of steels. These new findings can be employed to accurately control the volume fraction of phases in steels during cooling on the runout table after hot rolling. C. Aranas (left) Assistant Professor, Department of Mechanical Engineering, University of New Brunswick, Fredericton, N.B., Canada (clod.aranas@unb.ca)