N80级ERW石油套管用钢连续冷却转变行为的研究  

RESEARCH ON TRANSFORMATION BEHAVIOR OF N80 GRADE ERW OIL CASING STEEL DURING CONTINUOUS COOLING

作　　者：李睿鑫[1] 王青峰[1] 陈辉[2] 贺飞[2] 尚成嘉[2] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,秦皇岛066004 [2]北京科技大学材料与工程学院

出　　处：《上海金属》2011年第4期6-9,共4页Shanghai Metals

基　　金：国家高技术研究发展计划(863计划)项目(2007AA03Z509)

摘　　要：采用Gleeble热模拟技术结合金相法对N80级ERW石油套管试制钢的连续冷却转变行为进行研究。试验表明,试制钢9#、10#试样在一般国内ERW焊管淬火冷却条件(20℃/s)下都无法获得完全马氏体组织,只有在≥50℃/s的高冷速条件下才能获得完全马氏体组织。10#试制钢的淬透性强于9#钢的。The characteristic of continuous cooling transformation of the experimental steel of N80 grade oil casing were studied by thermo mechanical simulator（Gleeble-3500）.The results showed that the experimental steel of 9# and 10# could not transformed completely to martensite microstructure under the 20 ℃/s quenching condition of domestic ERW pipe welding.Only on the high cooling rate of above 50 ℃/s,the experimental steel could obtain whole martensite.The hardenability of the experimental steel 10# was stronger than that of 9#.

关 键 词：电阻焊 N80 级石油套管 连续冷却转变 淬透性 

分 类 号：TG161[金属学及工艺—热处理]