92 West Dazhi Street
Nan Gang District
Harbin, 150001
China
Harbin Institute of Technology
Ultrasonic surface rolling process, M50 Bearing steel, Gradient nanostructure, Tribological properties
lath martensite, boundary sliding, work-hardening rate, film-like carbides
Strength-ductility synergy, Martensite Steel, Rim-Nanocrystals, Cold deformation