Electromagnetic modeling of Mod. 9Cr-1Mo steels for electromagnetic nondestructive evaluation of creep damage

Matsumoto, Takanori*; Uchimoto, Tetsuya*; Takagi, Toshiyuki*; Takaya, Shigeru

no journal, , 

The aim of this study is to evaluate microstructure change by creep damage of mod. 9Cr-1Mo steels using electromagnetic nondestructive evaluation. For the purpose, AC magnetization curves of isothermal aging specimens are discussed. Through the comparison between experimental and numerical results, equivalent conductivity and relative permeability are evaluated, and the relationship between microstructure and magnetic properties is discussed.