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2 9CrV钢活塞的表层、距表面12 mm处、距表面20 mm处、距表面24 mm处、 距表面30 mm处以及心部组织的SEM形貌

Fig.2 SEM images of 9CrV steel piston at different radial positions (a) surface layer; (b) 12 mm from the piston surface; (c) 20 mm from the piston surface; (d) 24 mm from the piston surface; (e) 30 mm from the piston surface and (f) piston core