影响高级别管线钢拉伸强度测试的因素
Factors of Influencing on Tensile Strength Test of High Grade Pipeline Steels
摘 要
采用光学显微镜、拉伸试验机等对影响高级别管线钢X80、X100、X120拉伸强度测试的指标选定、试样尺寸和形状等因素进行了分析.结果表明:对于X80以上级别管线钢用Rt0.5已经不能准确表征材料的屈服强度,使用Rp0.2或Rt0.6作为材料的屈服强度更合理;圆棒试样直径越小,拉伸试验测定的Rt0.5、Rp0.2和Rt0.6及抗拉强度值越低;由于包申格效应的影响,X80和X100钢管横向拉伸试样宜采用圆棒拉伸试样,X120钢管横向拉伸试样采用矩形拉伸试样更合理.
屈服强度
抗拉强度
包申格效应
high grade pipeline steel
yield strength
tensile strength
Bauschinger effect
Abstract
The factors,including index selection,sample size and sample shape,influenced on the tensile strength test of the X80,X100 and X120 high grade pipeline steels were investigated by means of optical microscope and tensile tester.The results show that Rt0.5 used for the pipeline steel whose grade was greater than X80 could not accurately characterize the material yield strength,while Rp0.2 and Rt0.6 were more reasonable.The smaller the size of the round bar specimen,the lower the Rt0.5,Rp0.2,Rt0.6 and tensile strength obtained by the tensile test.Due to the Bauschinger effect,the transverse tensile sample should adopt round bar shape for the X80 and X100 pipeline steel,and rectangular shape for the X120 pipeline steel.
中图分类号 TG115.5
所属栏目 试验研究
基金项目
收稿日期 2009/9/4
修改稿日期 2010/5/6
网络出版日期
作者单位点击查看
备注张伟卫(1981-),男,河北石家庄人,工程师,硕士.
引用该论文: ZHANG Wei-wei,LI Yang,JI Ling-kang,XIONG Qing-ren,CHEN Hong-yuan,WANG Ran,GONG Shao-tao. Factors of Influencing on Tensile Strength Test of High Grade Pipeline Steels[J]. Materials for mechancial engineering, 2010, 34(11): 31～33
张伟卫,李洋,吉玲康,熊庆人,陈宏远,王冉,宫少涛. 影响高级别管线钢拉伸强度测试的因素[J]. 机械工程材料, 2010, 34(11): 31～33
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】潘家华.全球能源变换及管线钢的发展趋势[J].焊管,2008,31(1):9-11.
【2】GRAF M K,HILLENBRAND H G,HECKMANN C J,et al.High-strength large-diameter pipe for long-distance high pre-ssure gas pipelines[C]//Proceedings of the Thirteenth International Offshore and Polar Engineering Conference.Honolulu[s.n.],2003:97-104.
【3】王路兵,任毅,张鹏程.高级别管线钢X100 的试验研究[J].钢铁,2008,43(1):80-84.
【4】宫少涛,王爱民,吉玲康,等.X80与X100级管线钢屈服强度Rt0.5与Rp0.2的差异性研究[J].焊管,2007,30(5):42-44.
【5】ANSI/API SPECIFICATION 5L Specification for line pipe.44th Edition[S].
【6】CSA Z245.1-02 Steel pipe[S].
【2】GRAF M K,HILLENBRAND H G,HECKMANN C J,et al.High-strength large-diameter pipe for long-distance high pre-ssure gas pipelines[C]//Proceedings of the Thirteenth International Offshore and Polar Engineering Conference.Honolulu[s.n.],2003:97-104.
【3】王路兵,任毅,张鹏程.高级别管线钢X100 的试验研究[J].钢铁,2008,43(1):80-84.
【4】宫少涛,王爱民,吉玲康,等.X80与X100级管线钢屈服强度Rt0.5与Rp0.2的差异性研究[J].焊管,2007,30(5):42-44.
【5】ANSI/API SPECIFICATION 5L Specification for line pipe.44th Edition[S].
【6】CSA Z245.1-02 Steel pipe[S].
相关信息
