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Author(s): Victor Hugo C. de Albuquerque
Edgard de Macedo Silva
Josinaldo Pereira Leite
Elineudo Pinho de Moura
Vera Lúcia de Araújo Freitas
João Manuel R.S. Tavares
Title: Spinodal decomposition mechanism study on the duplex stainless steel UNS S31803 using ultrasonic speed measurements
Issue Date: 2010
Abstract: This work, focuses on the spinodal decomposition mechanism study on the duplex stainless steel duplex USN S31803, composed by austenite (γ) and ferrite (α) phases, at 425ºC and 475oC temperatures by ultrasonic speed measurements. This temperature range is responsible for the transformation mechanism of αinitial phase to α phases (poor in chromium) and α' (rich in chromium) by spinodal decomposition. The techniques to accomplish this analysis are based mainly on X-ray diffraction measures and ultrasonic speed. The obtained results show that it is possible to conclude that the use of ultrasonic speed measurements indicates a promising technique for following-up the phase transformation and spinodal decomposition on the steel studied.
Subject: Ciências Tecnológicas, Ciências da engenharia e tecnologias
Technological sciences, Engineering and technology
Scientific areas: Ciências da engenharia e tecnologias
Engineering and technology
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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