ISSN:1003-8620

CN:42-1243/TF

主管:中信泰富特钢集团股份有限公司

主办:大冶特殊钢有限公司

特殊钢 ›› 2012, Vol. 33 ›› Issue (2): 62-64.

• 组织和性能 • 上一篇    下一篇

轧制工艺对X80管线钢组织、织构和性能的影响

韩乐1,孙昊1,任慧平1,王海燕1,2,金自力1   

  1. 1.内蒙古科技大学材料与冶金学院,包头 014010;
    2.北京科技大学材料科学与工程学院,北京 100083;
  • 收稿日期:2011-10-27 出版日期:2012-04-01 发布日期:2022-10-20
  • 作者简介:韩 乐(1985-),男,硕士研究生,钢铁材料研究
  • 基金资助:
    内蒙古自然科学资金项目资助(2010MS0808)

Effect of Rolling Process on Structure, Texture and Properties of X80 Pipeline Steel

Han Le1  , Sun Hao1  , Ren Huiping1  , Wang Haiyan1,2 , Jin Zili1   

  1. 1. School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010;
    2. School of Materials Science and Engineering University of Science and Technology, Beijing 100083 ;
  • Received:2011-10-27 Published:2012-04-01 Online:2022-10-20

摘要: 利用环境扫描电子显微镜对X80管线钢(/%:0.043C、0.25Si、1.86Mn、0.085Nb、0.001 Ti、0.028Al、0.002 7N)的显微组织进行了观察,并借助于X射线衍射仪和电子背散射衍射技术,分析了管线钢组织与晶粒织构取向的特点。结果表明,{112}〈110〉、{110}〈110〉取向增加、小角度晶界比率提高,使管线钢的落锤撕裂面积增大,韧性提高;降低终轧温度、提高冷却速度,能够得到较多的针状铁素体,对落锤撕裂性能是有利的。

关键词: X80管线钢, 轧制工艺, 组织, 织构, 性能

Abstract: Observation of microstructure of X80 pipeline steel (/% : 0.043C, 0.25Si, 1.86Mn, 0.085Nb, 0.00lTi, 0.028Al, 0.0027N) has been carried out by using environmental scanning electron microscope, and characteristics of structure and grain-texture orientation of the pipeline steel are analyzed by X-ray diffraction ( XRD) and electron backscatter diffraction ( EBSD) technique. Results show that with increasing {112}〈110〉、{110}〈110〉 orientation and small-angle boundary ratio, the pipeline steel's drop weight tear test ( DWTT) shearing area ratio enlarges and the toughness of steel increases; with decreasing finishing rolling temperature and increasing cooling rate after rolling, it is a- vailable to get more acicular ferrite and favlurable to DWTT performance.

Key words: X80 Pipeline Steel, Rolling Process, Structure, Texture, Properties