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| Effects of Sensitization and Solid-solution Treatment on Interphase Corrosion Susceptibility of Nuclear Grade Z3CN-09M Stainless Steel |
| YI Xueqing, LU Yonghao, CHEN Yingfeng |
| National Center for Materials Service Safety, University of Science and Technology Beijing, Beijng, 100083, China |
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Abstract The interphase corrosion susceptibility of the nuclear grade stainless steel (Z3CN20-09M) δ/γ interface boundary was investigated by using electrochemical potential reactivation method (EPR). The effects of time and temperature of sensitization and solid-solution treatments on the interphase corrosion resistance of Z3CN20-09M stainless steel were studied. The results showed that the interphase corrosion resistance of the nuclear grade stainless steel is much better than that of the 304 stainless steel. With increase the temperature of sensitization treatment, the re-activation rate ,interphase corrosion susceptibility and the degree of corrosion inside the austenite grains increase. These effects peak at 700 ℃. In addition, with increase the sensitization time, the interphase corrosion susceptibility increases, thebut the degree of corrosion inside the austenite grains decreases. The re-activation rate increase with increase of time or temperature of solid-solution treatment. The corrosion within the anstenite grains and on the phase interface are intersified as well.
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Cite this article:
YI Xueqing,LU Yonghao,CHEN Yingfeng. Effects of Sensitization and Solid-solution Treatment on Interphase Corrosion Susceptibility of Nuclear Grade Z3CN-09M Stainless Steel. Journal of Chinese Society for Corrosion and protection, 2013, 33(2): 141-147.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y2013/V33/I2/141
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