基于组织和结构调控9CrV钢大尺寸活塞性能的优化

王磊, 张博, 张宝燕, 刘杨, 宋秀, 李永胜

Properties Optimization of 9CrV Steel for Large Piston Based on Microstructure and Structure Control

WANG Lei, ZHANG Bo, ZHANG Baoyan, LIU Yang, SONG Xiu, LI Yongsheng

图5 距活塞表层20 mm处的组织形貌

Fig.5 Microstructure at 20 mm from the piston surface (a) confocal laser image and (b) low-magnification SEM image