Variation of the magnetic properties of the martensite phase of SUS304 steel due to tensile deformation

Issue title: Proceedings from the 16th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2013)

Guest editors: Xavier Maldague and Toshiyuki Takagi

Article type: Research Article

Authors: Kinoshita, Katsuyuki^{a; *} | Nakazaki, Ryo^a | Matsumoto, Eiji^a

Affiliations: [a] Department of Energy Conversion Science, Kyoto University, Kyoto, Japan | Université Laval, Canada | Tohoku University, Japan

Correspondence: [*] Corresponding author: Katsuyuki Kinoshita, Department of Energy Conversion Science, Kyoto University, Yoshida Honmachi 606 8501, Kyoto, Japan. Tel.: +81 75 753 5897; Fax: +81 75 753 5897; E-mail: kinosita@energy.kyoto-u.ac.jp

Abstract: In order to be able to develop a deterioration sensor based on the inherent magnetic phase in type 304 stainless steel (SUS304 steel), the relationships between the magnetic properties of SUS304 steel and the martensite structure induced in it by tensile deformation were investigated using the electromagnetic impedance (EMI) method, optical microscopy, and the equivalent inclusion method. The results showed that the martensite fraction and internal stress had the greatest effect on the magnetic properties of SUS304 steel in the low tensile strain range. On the other hand, in the high tensile strain region, the changes in the shape and orientation of the martensite particles owing to tensile deformation had the most significant effect on the magnetic properties of SUS304 steel.

Keywords: Austenitic stainless steel, nondestructive evaluation method, equivalent inclusion method, tensile deformation

DOI: 10.3233/JAE-141811

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 45, no. 1-4, pp. 45-52, 2014