铬对抗大变形管线钢组织和性能的影响

英文篇名：Effect of Cr on Microstructure and Mechanical Properties of High Deformability Pipeline
中文刊名：钢铁研究学报
英文刊名：Journal of Iron and Steel Research
作者：郑晓飞 ; 康永林 ; 孟德亮 ; 安守勇 ; 夏佃秀 ; 张增军
英文作者：ZHENG Xiao-fei1 ; KANG Yong-lin1 ; MENG De-liang1 ; AN Shou-yong2 ; XIA Dian-xiu2 ; ZHANG Zeng-jun2(1.State Key Laboratory for Advanced Metals and Materials ; School of Materials Science and Engineering ; University ofScience and Technology Beijing ; Beijing 100083 ; China ; 2.Jinan Iron and Steel Group Corp ; Jinan 250101 ; Shandong ; China)
中文关键词：X80抗大变形管线钢 ; 微观组织 ; 力学性能 ; 铬元素
英文关键词：X80 high deformability pipeline ; microstructure ; mechanical property ; element chromium
出版日期：2010-11-15
机构：北京科技大学材料科学与工程学院新金属材料国家重点实验室;济钢集团有限公司;
年：2010
期：11
出版单位：钢铁研究学报

摘要

研究了铬元素对X80抗大变形管线钢的微观结构和力学性能的影响。采用准静态拉伸试验,对其屈服强度、抗拉强度和伸长率进行测试;采用热膨胀法,在Gleeble-1500热模拟机上测定了两种试验钢的动态CCT曲线。结果表明:铬元素的添加降低了碳的活度,显著抑制了先共析铁素体的形成,提高了贝氏体转变温度,使钢的抗拉强度提高约40 MPa,屈服强度基本不变,但使伸长率由19%降低到15%,-20℃冲击功由92 J降低到52 J。
The effects of element chromium additions on the properties and microstructure X80 high deformability pipeline was investigated deeply.The strength and elongation of alloys were tested with quasi-static tensile testing machine,and the continuous cooling transformation was conducted on a Gleeble-1500 hot simulator.The results indicate that Cr restrains the formation of pro-eutectoid ferrite and tensile strength are improved while the yield strength are not changed but the elongation and the value of the CVN at-20℃ of X80 high deformability pipeline reduce from 19%,92J to 14.5%,52J.

引文

[1]董玉华,余大涛,李鹤林.用于地震及地质灾害条件下的钢管性能研究进展[J].焊管,2008,31(4):14.
    [2]Shusuke Fujita,Izumi Takeuchi,Hidenori Shitamoto,et al.Strain Capacity of X80 Grade Uoe Pipe for Strain Based Designin Seismic Area:International Seminar on X80 and HigherGrade Line Pipe Steel[C]∥Proceedings of X80&HGLPS,China:China National Petroleum Corporation,2008.
    [3]郑磊,高珊.高韧性针状铁素体X80级管线钢的试制[J].焊管,2005,28(2):21.
    [4]TANG Zheng-hua,Waldo Stumpf.The Role of MolybdenumAdditions and Prior Deformation on Acicular Ferrite Formationin Micro alloyed Nb-Ti Low-Carbon Line-Pipe Steels[J].Ma-terials Characterization,2008,59:717.
    [5]汪瑞俊,杜晓东,孙国栋,等.铬含量对Cr-Ni-Mo系低碳合金钢组织性能的影响[J].材料热处理,2007,36(8):14.
    [6]吴成建,陈国良,强文江.金属材料学[M].北京:冶金工业出版社,2008.
    [7]石川信行,鹿内伸夫,近藤丈.超高?度高変形ラインパイプの開発[J].JFE技報,2007(17):26.
    [8]崔约贤,王长利.金属断口分析[M].哈尔滨:哈尔滨工业大学出版社,1998.