阿拉斯加管道工程用抗大变形X80双相管线钢开发  

DEVELOPMENT OF DUAL PHASE X80 PIPELINES FOR HIGH STRAIN APPLICATION IN ALASKA PIPELINE PROJECT

作　　者：刘文月[1] 任毅[1] 高红[1] 张帅[1] 王爽[1] 张禄林[1] 

机构地区：[1]鞍山钢铁股份有限公司,辽宁鞍山114009

出　　处：《上海金属》2013年第6期11-13,52,共4页Shanghai Metals

摘　　要：介绍了为阿拉斯加管道工程项目所开发的高强管线钢板,具有抗大变形的性能特征,其中关键技术之一是双相组织控制。通过控轧控冷工艺获得(铁素体+贝氏体)组织的钢板:控轧后在入水冷却前进行空冷,使多边形铁素体率先在基体中析出,然后通过加强水冷强度使剩余的基体组织转变为贝氏体,从而控制钢板的强度达到X80级别。研究结果表明,开始冷却温度是关键工艺参数,对钢板性能具有决定性作用。当铁素体均匀分布时,试验钢表现出良好的综合性能。采用合适的水冷工艺,低温韧性、变形能力与强度的配合才能达到阿拉斯加项目对X80管线钢的要求。Extensive studies were conducted to develop the high strength pipeline steels with high deformability for Alaska pipeline project. One of the key technologies was dual phase controlling. The aimed structure of steel plates was ferrite-bainite, which could be obtained by thermomechanical controlled process. Low carbon steels were enable to form poly ferrite during relaxing after controlled roiling, and enhanced the matrix strength to grade X80 with accelerated water cooling. When poly ferrite was equably dispersed, the experimental steels had excellent integrated mechanical properties. The results illustrated that the start accelerated cooling temperature was the decisive factor. With proper water cooling process, the combination of strength, ductility and deformability reached the need of X80 pipeline steel for Alaska pipeline project.

关 键 词：阿拉斯加 管线钢 X80双相钢 变形能力 

分 类 号：TG142.71[一般工业技术—材料科学与工程]