A new magnetic NDE method in inconel 600 alloy

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Takahashi, S.^a | Sato, H.^a | Kamada, Y.^{a; *} | Ara, K.^a | Kikuchi, H.^a

Affiliations: [a] NDE & Science Research Center, Faculty of Engineering, Iwate University, Morioka, 202-8551 Japan

Correspondence: [*] Corresponding author: Y. Kamada, E-mail: [email protected]

Abstract: Cr concentration and the volume fraction in Inconel 600 alloy were accurately analyzed by the new magnetic method according to the magnetic properties of the ternary alloys. The depletion has a maximum at aging for 10~h at 973 K and diminishes with longer aging. Cr depletion below 10 wt. % was observed in the aging. After aging for 100 h the depletionremarkably recovers, but it definitely remains compared with the initial state. The depleted zone extends to 300 nm from the grain boundary. These results agree well with those of a previous analysis by scanning transmission electron microscope analysis. The new magnetic method, herein reported, for evaluation of chromium depletion has nondestructive evaluation characteristics.

DOI: 10.3233/JAE-2004-526

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 3-8, 2004