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8 不同热处理工艺9CrV钢活塞距表面30 mm处和过渡区冲击断口的形貌

Fig.8 Impact fracture morphology of 9CrV steel piston at 30 mm from the piston surface and transition part under different heat treatment (a-c) 1#, piston 2/3 R; (d-f) 2#, piston 2/3 R; (g-i) 3#, piston transition