超声冲击制备梯度纳米结构Zr-4合金低温扩散连接界面组织与力学性能

杨旭, 杨振文, 王颖, 李会军, 李永兵

Interfacial Microstructure and Mechanical Properties of Low-Temperature Diffusion-Bonded Zr-4 Alloy with Gradient Nanostructure via Ultrasonic Impact Treatment

YANG Xu, YANG Zhenwen, WANG Ying, LI Huijun, LI Yongbing

图3 超声冲击后Zr-4合金(GNS-Zr合金)纵截面梯度结构的EBSD分析

Fig.3 EBSD analyses of longitudinal gradient microstructure of Zr-4 alloy via ultrasonic impact treatment (GNS-Zr alloy) (Layer I represents nano/ultrafine-grained layer, Layer II represents deformed grain layer, Layer III represents matrix grain layer) (a) SEM image of overview microstructure (b) variations of the grain size and hardness with surface depth (c) IPF overlapped with grain boundary map extracted from Layer II in Fig.3a (d) image quality (IQ) map overlapped with grain boundary map extracted from Layer II in Fig.3a (e) pole figures