Austenite Decomposition in Low Carbon Steels with Microalloy Additions

G.R. Gomez; M. Bühler; T. Perez

doi:10.4028/www.scientific.net/MSF.500-501.395

Paper Titles

Processing and Stability of Ultrafine Grained Structures in Some Microalloy Steels
p.363

Study on Ferrite Intragranular Nucleation in a V-Microalloyed Steel
p.371

In Situ X-Ray Diffraction Measurements of Deformation-Induced Austenite to Martensite Transformation in a Multiphase TRIP Steel
p.379

Characterisation and Quantification of Complex Bainitic Microstructures in High and Ultra-High Strength Linepipe Steels
p.387

Austenite Decomposition in Low Carbon Steels with Microalloy Additions
p.395

Modeling Ferrite Grain Size Distributions during the Transformation of Hot Worked Austenite
p.403

Ferrite Grain Size Refinement in Vanadium Microalloyed Structural Steels
p.411

The Kinetics of the Isothermal Bainite Formation in 1%C-1.5%Cr Steel
p.419

Multiphase Steels: Structure-Mechanical Properties Relationships in the Cold Rolled and Continuous Annealed Condition
p.429

HomeMaterials Science ForumMaterials Science Forum Vols. 500-501Austenite Decomposition in Low Carbon Steels with...

Austenite Decomposition in Low Carbon Steels with Microalloy Additions

Abstract:

A metallurgical model to describe the formation of ferrite, perlite and bainite during continuous cooling was developed. The model uses classical nucleation and early growth theories to calculate the beginning of the reaction, and Avrami-type equations to evaluate the transformation progress. The materials studied were plain carbon steels with different Mn contents, and microalloyed steels with Nb, Ti and/or V additions. The model predictions were adjusted and validated with experimental results obtained from dilatometric tests. The range of cooling rates considered was between 5°C/sec and 50°C/sec. From the comparison with the experimental data it was found that the model correctly describes the dependence of the reaction kinetic on the cooling rate, as well as on the steel chemistry.

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Periodical:

Materials Science Forum (Volumes 500-501)

Pages:

395-402

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.500-501.395

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Online since:

November 2005

Authors:

G.R. Gomez, M. Bühler, T. Perez

Keywords:

Austenite Decomposition, Microalloyed Steel, Microstructure, Transformation Kinetics

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