Title :
Magnetic characterization of thermally sensitized Type 304 and 316 stainless steels
Author :
Kamada, Y. ; Mikami, T. ; Takahashi, S. ; Kikuchi, H. ; Ara, K.
Author_Institution :
Sci. Res. Center, Iwate Univ., Morioka, Japan
Abstract :
Magnetic properties of thermally sensitized stainless steels with different composition were investigated and the relation between these properties and Cr concentration was clarified. Magnetization curves showed that after aging, ferromagnetic hysteresis appeared and saturation magnetization increases with aging time. Ferromagnetic martensite phase appeared along the grain boundary by sensitization and disappeared by healing for type 304 steels but were not confirmed for type 316 steels. These behaviors were explained by the change of martensitic transition temperature due to sensitization.
Keywords :
ageing; austenitic stainless steel; corrosion resistance; ferromagnetic materials; grain boundaries; magnetic hysteresis; martensitic transformations; 304 stainless steel; 316 stainless steel; FeCCr; aging time; ferromagnetic hysteresis; ferromagnetic martensite phase; grain boundary; healing; magnetic properties; martensitic transition temperature; saturation magnetization; thermally sensitized stainless steels; Aging; Chromium; Corrosion; Magnetic force microscopy; Magnetic properties; Paramagnetic materials; Saturation magnetization; Steel; Temperature sensors; Thermal resistance;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464346
