Title

A INFLUÊNCIA DO TRATAMENTO TERMOMECÂNICO NA MICROESTRUTURA DE UM AÇO ASSISTIDO PELO EFEITO TRIP

THE INFLUENCE OF THERMOMECHANICAL TREATMENT ON THE MICROSTRUCTURE OF A TRIP STEEL

Authorship

Santos, C. N.; Santos, C. M. L.; Vieira, A. G.; Viana, C. S. C.

Santos, C. N.

I am this author

Santos, C. M. L.

I am this author

Vieira, A. G.

I am this author

Viana, C. S. C.

I am this author

DOI

10.5151/2594-5327-0367

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Abstract

Estudou-se a influência de diferentes tratamentos termomecânicos na microestrutura final de um aço multifásico 0,2%C-1,5%Mn-1,5%Si, através da caracterização morfológica dos produtos de transformação. O objetivo do trabalho foi investigar a variação da fração volumétrica e distribuição das fases presentes na microestrutura, para permitir sua aplicação na indústria automobilística. Foram estudadas as influências de tratamentos de recozimento intercrítico (campo

The influence of different thermomechanical treatments on the final microstructure of a multiphase steel (0.2%C-1.5%Mn-1.5%Si) was studied using morphologic characterization of the transformation products. The aim of the work was to investigate the variation of volume fraction and distribution of the phases present in the microstructure with a view to be used in automobile industry. The influence of the intercritical annealing temperature and bainitic transformation times on the volume fractions of the microconstituints was studied. The microstructures were characterized through optical and scanning electron microscopies and X-ray diffraction. The results show that the multiphase structures obtained were the typical microstructures of dual-phase and TRIP steels. In addition, the results from texture measurements show that this steel can possibly be used for structural components in the automobile industry.

Keywords

Aço TRIP; Dual phase; Microestrutura; Caracterização.

TRIP steel; Dual phase; Microstruture; Characterization.