[1]张志明,武占芳,钱　勇.X70抗大变形直缝埋弧焊管研制[J].焊管,2011,34(10):20-23.[doi:1001-3938（2011）10-0020-04]
　ZHANG Zhi-ming,WU Zhan-fang,QIAN Yong.Research on X70 SAWL Pipe with Great Deformation Resistance[J].,2011,34(10):20-23.[doi:1001-3938（2011）10-0020-04]
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X70抗大变形直缝埋弧焊管研制
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
34
期数:
2011年第10期
页码:
20-23
栏目:
应用与开发
出版日期:
2011-10-28

文章信息/Info

Title:
Research on X70 SAWL Pipe with Great Deformation Resistance
文章编号:
1001-3938（2011）10-0020-04
作者:
张志明;  武占芳;  钱　勇
（渤海石油装备巨龙钢管南京公司，南京 210061）
Author(s):
ZHANG Zhi-ming;  WU Zhan-fang;  QIAN Yong
（ Nanjing Julong Steel Pipe Co.， Ltd. of CNPC Bohai Equipment Manufacturing Co.， Ltd.， Nanjing 210061， China）
关键词:
X70; 抗大变形直缝管线钢管; 延伸率; 拱顶形拉伸曲线
Keywords:
X70; SAWL pipes with great deformation resistance; elongation; round house-shaped tensile curve
分类号:
TG335.75
DOI:
1001-3938（2011）10-0020-04
文献标志码:
A
摘要:
虽然引进的X80抗大变形钢管已在西气东输二线进行了部分应用并制定了相应的技术要求，但国内对于X70及以上钢级抗大变形管线钢管的应用和标准制定还是空白。本次试制的X70抗大变形钢，获得了具有典型抗大变形钢管的特征的拱顶形（round house）应力-应变曲线、较低的屈强比、高的形变强化指数、高的均匀塑性变形延伸率及硬相和软相的双相组织，各性能指标均优于现有标准要求。
Abstract:
The imported X80 SAWL pipe with great deformation resistance were partly applied in the 2nd West to East Gas Pipeline Project， and the relevant execution standards were also be established， but the application and standards establishment for X70 and the above grades line pipe with great deformation resistance are still blank in China. The trial-production X70 steel with great deformation resistance possess the representative characteristics， such as the round house-shaped stress-strain curve， lower yield ratio， high strain index， high and uniform deformation elongation， and hard and soft phase dual-phase structure， so each performance index is better than that in present concerned standards.

参考文献/References:

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［4］ THOMAS H，SHIGRU E，NOBOYUKI I，et al.Effect of Volume Fraction of Constituent Phases on the Stress Strain Relationship of Dual Phase Steels［J］ . ISIJ International，1999，9（3）:288-294.
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备注/Memo

备注/Memo:
作者简介：张志明（1980—），男，工程师，2007年毕业于哈尔滨工程大学材料加工工程专业，主要从事钢管技术质量管理及生产工艺研究。
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