超声冲击对增材制造组织改善及强化机理影响的研究进展

孙徕博, 黄陆军, 黄瑞生, 徐锴, 武鹏博, 龙伟民, 姜风春, 方乃文

Progress in the Effect of Ultrasonic Impact Treatment on Microstructure Improvement and Strengthening Mechanism in Additive Manufacturing

SUN Laibo, HUANG Lujun, HUANG Ruisheng, XU Kai, WU Pengbo, LONG Weimin, JIANG Fengchun, FANG Naiwen

图2 超声冲击作用下SMA490BW钢组织演变及其示意图[41]

Fig.2 SMA490BW steel microstructural evolutions and schematics influenced by UIT[41] (a) microstructure without treatment (b) dislocation multiplication (c) formation of dislocation cells (d) formation of subgrains (e) microstructure refinement