Scaling analysis of magnetic minor hysteresis loops in plastically deformed 304 stainless steel

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part II

Article type: Research Article

Authors: Kobayashi, Satoru^{a; *} | Kikuchi, Nobuhiro^a | Kikuchi, Hiroaki^a | Kamada, Yasuhiro^a | Echigoya, Junichi^a

Affiliations: [a] NDE and Science Research Center, Iwate University, Morioka 020-8551, Japan

Correspondence: [*] Corresponding author: Satoru Kobayashi, NDE and Science Research Center, Iwate University, 4-3-5 Ueda, Morioka 020-8551, Japan. Tel.: +81 19 621 6350; Fax: +81 19 621 6350; E-mail: [email protected]

Abstract: We have examined scaling rules in magnetic minor hysteresis loops for strain-induced ferromagnetic α'-martensite in 304 stainless steels. The scaling power law between the hysteresis loss and remanence is found to be independent of volume fraction and morphology of martensite. A coefficient of the power law changes depending on size, shape and distribution of martensite. The present method can be a possible technique for integrity assessment of austenitic stainless steels because of the sensitivity and low measurement field.

Keywords: Magnetic hysteresis, Stainless steel, Martensite, Non-destructive testing

DOI: 10.3233/JAE-2010-1228

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 1119-1125, 2010