X120M管线钢相变组织及性能研究
Research on Phase Transformation Structure and Properties of X120M Pipeline Steel
刘汉儒 1亢亚玲2
作者信息
- 1. 包头钢铁(集团)有限责任公司新源科技有限公司,内蒙古 包头 014010
- 2. 内蒙古包钢钢联股份有限公司长材厂,内蒙古 包头 014010
- 折叠
摘要
利用Gleeble 1500 热模拟试验机,研究X120M管线钢奥氏体连续冷却转变规律,并在实验室对X120M管线钢进行控轧控冷处理.结果表明,当冷却速率在20～50℃/s之间时,试验钢组织主要为下贝氏体和马氏体.终冷温度为380℃时,试验钢屈服强度为 900 MPa,抗拉强度为 1 015 MPa,延伸率为 18%,-30℃冲击功为 180 J,-20℃落锤剪切面积为100%,力学性能符合标准要求.
Abstract
The continuous cooling transformation laws of X120M pipeline steel is studied with Gleeble 1 500 thermal simulated test machine as well as it is with controlled rolling and controlled cooling in laboratory.The results indicated that the microstructure of test steel was mainly lower bainite and martensite when cooling rate was at 20～50℃/s.When the finish cooling temperature of test steel is at 380℃,its yield strength is 900 MPa,tensile strength is 1 015 MPa,elongation is 18%,impact energy at-30℃is180 J and shearing area of drop weight tear test at-20℃is100%.The mechanical properties could meet the standard requirements.
关键词
X120M管线钢/相变/显微组织/力学性能Key words
X120M pipeline steel/phase transformation/microstructure/mechanical property引用本文复制引用
出版年
2024
NETL
NSTL
万方数据