Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
832241 | Materials & Design (1980-2015) | 2010 | 4 Pages |
Abstract
This work, focuses on the spinodal decomposition mechanism study on the duplex stainless steel duplex UNS S31803, composed by austenite (γ) and ferrite (α) phases, at 425 °C and 475 °C 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.
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Authors
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,