A study of intergranular corrosion of austenitic stainless steel by electrochemical potentiodynamic reactivation, electron back-scattering diffraction and cellular automaton

作者：Yu Xiaofei; Chen Shenhao^*; Liu Ying; Ren Fengfeng

来源：Corrosion Science, 2010, 52(6): 1939-1947.

DOI：10.1016/j.corsci.2010.02.015

• Stainless steel
• SEM
• Intergranular corrosion

The impact of solution and sensitization treatments on the intergranular corrosion (IGC) of austenitic stainless steel (316) was studied by electrochemical potentiodynamic reactivation (EPR) test, and the results showed the degree of sensitization (DOS) decreased as solution treatment temperature and time went up, but it increased as sensitization temperature prolonged. Factors that affected IGC were investigated by field emission scanning electron microscope (FE-SEM) and electron back-scattering diffraction (EBSD). Furthermore, the precipitation evolution of Cr-rich carbides and the distribution of chromium concentration were simulated by cellular automaton (CA), clearly showing the effects of solution and sensitization treatments on IGC.

• 出版日期2010-6
• 单位山东大学