Preparing thick gradient surface layer in Cu-Zn alloy via ultrasonic severe surface rolling for strength-ductility balance

Q Sun, J Sun, Y Fu, B Xu, Y Han, J Chen, J Han, H Wu… - Materials, 2022 - mdpi.com
A gradient structure (GS) design is a prominent strategy for strength-ductility balance in
metallic materials, including Cu alloys. However, producing a thick GS surface layer without …