TY - JOUR T1 - Surface Microstructure Refinement and Mechanical Properties of GCr15 Steels Improved During Ultrasonic Surface Rolling Processing JO - Materials Research A1 - Xue, Xianmeng A1 - Xu, Shubo A1 - Ma, Xiquan A1 - Han, JuanJuan A1 - Zheng, Wei SN - 1516-1439 UL - 10.1590/1980-5373-MR-2022-0606 VL - 26 Y1 - 2023 PB - Brasil ER -