Paper Title:
Effect of Coiling Temperature on Microstructure and Mechanical Properties of a Nb-V Microalloyed Steel
  Abstract

The effect of coiling temperature on the microstructure and mechanical properties of a Nb-V microalloyed steel was investigated. Controlled rolling followed by accelerated cooling and coiling was simulated by means of both, uniaxial compression, using a quenching and deformation dilatometer, and torsion. Specimens were reheated at 1250º for 5-10 min, then deformed at 1150°C, =0.3, and subsequently at 900°C, =0.4, followed by rapid cooling to a temperature between 450 and 700°C where coiling was simulated by holding the specimen for one hour at the selected temperature followed by a slow cooling to room temperature. Mechanical characterization was performed by means of hardness measurements and tensile tests, using tubular specimens machined from the torsion samples. It was found that decreasing the coiling temperature the ferrite-pearlite microstructure changed to ferrite-bainite, with a hardness peak reached for coiling at 600°C-650°C.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
3350-3355
DOI
10.4028/www.scientific.net/MSF.638-642.3350
Citation
M. Olasolo, P. Uranga, J.M. Rodriguez-Ibabe, B. López, "Effect of Coiling Temperature on Microstructure and Mechanical Properties of a Nb-V Microalloyed Steel", Materials Science Forum, Vols. 638-642, pp. 3350-3355, 2010
Online since
January 2010
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$32.00
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