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9 大尺寸活塞顶端开孔结构的示意图
Fig.9 Button-hole piston: schematic diagram of structure (a) and hardness distribution in radial direction (b)