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 end of ceramic-lined composite tubing prepared by SHS-centrifugal method was treated by induction heating at different cooling rates. The laser scanning confocal microscopy and tensile testing machine were used to characterize the microstructure and end-tipped tensile properties . The results show that as the cooling rate increases, the tube matrix gradually changes from ferrite to pearlite to upper bainite, and the ultimate tensile load at the thread portion increases from 634 kN to 704 kN accordingly.