MODELOS MATEMÁTICOS PARA A EVOLUÇÃO DA MICROESTRUTURA NA LAMINAÇÃO DE TUBOS SEM COSTURA

The goal of this work is to present recent developments on mathematical modeling for microstructure evolution in different steel types, applied to a continuous rolling of seamless tubes. The development of these models depends on careful characterization of the thermomechanical cycle and/on correct...

Full description

Saved in:
Bibliographic Details
Published in:Tecnologia em metalurgia, materiais e mineração materiais e mineração, 2013-07, Vol.10 (3), p.207
Main Authors: Carvalho, Ricardo Nolasco, Ferreira, Marcelo Almeida C, Santos, Dagoberto Brandão, Barbosa, Ronaldo Antônio N M
Format: Article
Language:Portuguese
Subjects:
Alloys
Computer simulation
Continuous rolling
Cooling rate
Correlation
Interruption
Mathematical analysis
Mathematical models
Metallurgy
Microstructure
Optical microscopy
Seamless tubes
Steels
Thermomechanical properties
Torsion
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The goal of this work is to present recent developments on mathematical modeling for microstructure evolution in different steel types, applied to a continuous rolling of seamless tubes. The development of these models depends on careful characterization of the thermomechanical cycle and/on correct selection and adjustment of equations which describes the several metallurgical phenomena involved on this process. The adjustments of these models are done using the results obtained in hot torsion simulations. For this, the thermomechanical cycles are simplified considering the equipment limitations in reproduce some strain, strain rates and cooling rates developed industrially. Samples for optical microscopy were obtained by interruption of simulations after selected steps of process. After adjustment of each model with results from simulation, the final microstructures are compared with those obtained in industrial scale. In general, good correlations are observed.
ISSN:2176-1515
2176-1523
DOI:10.4322/tmm.2013.030