摘要
对QT400材料400℃以下不同温度的拉伸性能和300℃下不同应变幅值的低周疲劳性能进行了试验,得到了不同温度下QT400拉伸性能的变化特性,球形石墨的断口形貌微观特征,以及低周疲劳Ramberg-Osgood参数和Manson-Coffin参数,为汽缸的结构设计和强度计算提供了技术支持。
The tensile properties of QT400 at different temperatures below 400℃and the low cycle fatigue properties of different strain amplitudes at 300℃have been tested.The variation characteristics of QT400 tensile properties at different temperatures,the microstructure characteristics of the fracture surface of spherical graphite,and the Ramberg-Osgood parameters and Manson-Coffin parameters of low cycle fatigue have been obtained,which can provide technical support for the structural design and strength calculation of the cylinder.
作者
张小伍
马新博
王丽艳
田宇
李海霞
Zhang Xiaowu;Ma Xinbo;Wang Yanli;Tian Yu;Li Haixia
出处
《大型铸锻件》
2020年第5期20-22,共3页
Heavy Casting and Forging
关键词
QT400球墨铸铁
低周疲劳
应变控制
QT400 spheroidal graphite cast iron
low cycle fatigue
strain control
