China Electric Power Research Institute;
Beijing 100192;
China;
Institute of Engineering Technology;
University of Science and Technology Beijing;
Beijing 100083;
China;
State Grid Corporation;
Beijing 100031;
China;
Faculty of Materials Metallurgy and Chemistry;
Jiangxi University of Science and Technology;
Ganzhou 341000;
China;
Metal and Chemistry Research Institute;
China Academy of Railway Sciences Corporation Limited;
Beijing 100081;
China;
ferritic steel; nanoparticles; interphase precipitation; thermal stability; ostwald ripening rate;