Study on the microstructure of UNS S32304 duplex steel submitted to heat-treatments
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2017
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ENCONTRO CIENTÍFICO DE FÍSICA APLICADA, 8.
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Resumo
Duplex stainless steels are characterized by a good combination of mechanical properties and corrosion
resistance. Due to the metastable equilibrium between the ferritic (α) and austenitic (γ) phases, significant
changes in the microstructure of these steels may occur when subjected to temperatures higher than the
ambient, degrading their properties. In this work, it was investigated the influence of heat treatments on the
microstructure and mechanical properties of a duplex stainless steel UNS-S32304. The heat-treatments
were performed at four temperatures (300°C, 600°C, 900°C and 1000°C) with two treatment times (1 h
and 6 h) and two processes of cooling down (in air and water). The samples were studied by X-ray
diffraction using Pawley method to determine the lattice parameters, mean crystallite sizes and microstrain
for the two phases and compared to Vickers microhardness results.
Como referenciar
GOULART, F.; ICHIKAWA, R.U.; TURRILLAS, X.; MARTINEZ, L.G. Study on the microstructure of UNS S32304 duplex steel submitted to heat-treatments. In: ENCONTRO CIENTÍFICO DE FÍSICA APLICADA, 8., 4-7 de setembro, 2017, Vitória, ES. Anais... São Paulo, SP: Blucher Proceedings, 2017. p. 45-48. DOI: 10.5151/phypro-viii-efa-12. Disponível em: http://repositorio.ipen.br/handle/123456789/31227. Acesso em: 26 Mar 2026.
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