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    Volume 44, Issue 3 (July 2016)

    Evaluation of the Magnetic Permeability for the Microstructural Characterization of a Duplex Stainless Steel

    (Received 4 December 2013; accepted 10 October 2014)

    Published Online: 13 July 2016

    CODEN: JTEVAB

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    Abstract

    Non-destructive testing has been commonly used to assess the presence of discontinuities that may affect the integrity of materials in service. In this study, a Hall-effect sensor is used in a methodology developed to study, in a non-destructive manner, the microstructural variations of a material that occur because of the single-phase decomposition. The material selected was the UNS S31803 duplex stainless steel, particularly because of its behavior at temperatures below 525°C. Measurements of magnetic permeability based on Hall voltage values were performed, as well as hardness measurements and x-ray diffraction studies. The results confirm that the magnetic permeability can be used to successfully track the formation of α′ phase from α phase in a duplex stainless steel.


    Author Information:

    de Macedo Silva, Edgard
    Instituto Federal de Educação Ciência e Tecnologia da Paraíba, João Pessoa, PB

    Leite, Josinaldo P.
    Universidade Federal da Paraíba, João Pessoa, PB

    de França Neto, Francisco A.
    Instituto Federal de Educação Ciência e Tecnologia da Paraíba, João Pessoa, PB

    Leite, João P.
    Universidade Federal da Paraíba, João Pessoa, PB

    Fialho, Walter M. L.
    Universidade Federal da Paraíba, João Pessoa, PB

    de Albuquerque, Victor Hugo C.
    Programa de Pós-Graduação em Informática Aplicada, Universidade de Fortaleza, Fortaleza, CE

    Tavares, João Manuel R. S.
    Instituto de Engenharia Mecânica e Gestão Industrial, Departamento de Engenharia Mecânica, Faculdade de Engenharia, Universidade do Porto, Porto,


    Stock #: JTE20130313

    ISSN:0090-3973

    DOI: 10.1520/JTE20130313

    Author
    Title Evaluation of the Magnetic Permeability for the Microstructural Characterization of a Duplex Stainless Steel
    Symposium ,
    Committee A06