摘要
利用感应加热装置对用SHS-离心法制备的陶瓷内衬复合油管端头进行了不同冷却速度的处理,采用激光共聚焦显微镜和拉伸试验机对金相组织和端部螺纹拉伸性能进行表征。结果表明,随着冷却速度的增加,管基体由铁素体+珠光体组织逐渐演变为上贝氏体组织,螺纹部位的拉伸极限载荷相应地由634 kN提高到704 kN。
The ends of ceramic-lined P110 steel tube prepared by SHS-centrifugal technique were heat-treated at different cooling rates using induction-heating device.The microstructure and tensile properties of thread at ends of the tube were characterized using confocal laser microscopy and tensile testing machine.The results shows that the steel matrix microstructure of pipe,as the cooling rate increasing,changed from ferrite and pearlite to upper bainite,and the ultimate tensile load of thread position increased from 634 kN to 704 kN.
出处
《石油矿场机械》
2010年第7期60-63,共4页
Oil Field Equipment
关键词
陶瓷
复合油管
组织
拉伸性能
ceramic
composite tube
microstructure
tensile properties
