Journal Published Online: 03 December 2014
Volume 44, Issue 3

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

CODEN: JTEVAB

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, BR
Leite, Josinaldo
Universidade Federal da Paraíba, João Pessoa, PB, BR
de França Neto, Francisco
Instituto Federal de Educação Ciência e Tecnologia da Paraíba, João Pessoa, PB, BR
Leite, João
Universidade Federal da Paraíba, João Pessoa, PB, BR
Fialho, Walter
Universidade Federal da Paraíba, João Pessoa, PB, BR
de Albuquerque, Victor Hugo
Programa de Pós-Graduação em Informática Aplicada, Universidade de Fortaleza, Fortaleza, CE, BR
Tavares, João Manuel
Instituto de Engenharia Mecânica e Gestão Industrial, Departamento de Engenharia Mecânica, Faculdade de Engenharia, Universidade do Porto, Porto, PT
Pages: 6
Price: $25.00
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Stock #: JTE20130313
ISSN: 0090-3973
DOI: 10.1520/JTE20130313