Spinodal decomposition mechanism study on the duplex stainless steel UNS S31803 using ultrasonic speed measurements

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Victor Hugo C. de Albuquerque (Author) FEUP; Edgard de Macedo Silva (Author) Other; Josinaldo Pereira Leite (Author) Other; Elineudo Pinho de Moura (Author) Other; Vera Lúcia de Araújo Freitas (Author) Other; João Manuel R.S. Tavares (Author) FEUP

Journal

Title: Materials and Design

Vol. 31 No. 4

Pages: 2147-2150

ISSN: 0261-3069

Publisher: Elsevier Science

Indexing

ISI Web of Knowledge - 30 Citations

ISI Web of Science

Scopus - 35 Citations

INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Other information

Authenticus ID: P-003-817

DOI: 10.1016/j.matdes.2009.11.010

Abstract (EN): 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.

Language: English

Type (Professor's evaluation): Scientific