| 管线钢JCOE制管前后力学性能变化分析 |
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| 引用本文： | 杜伟,娄琦,黄磊,王长安,杨专钊.管线钢JCOE制管前后力学性能变化分析[J].焊管,2010,33(5):20-23. |
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| 作者姓名： | 杜伟 娄琦 黄磊 王长安 杨专钊 |
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| 作者单位： | 中国石油天然气集团公司管材研究所,西安,710065 |
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| 摘 要： | 研究了X60,X70和X80管线钢JCOE工艺制管前后冲击韧性、硬度及拉伸性能的变化,分析了试样加工形式、显微组织及厚径比对拉伸性能的影响。研究发现,不同钢级管线钢JCOE制管后冲击韧性均有变化,但绝大多数呈下降趋势;JCOE工艺过程产生较大的加工硬化;对于X80钢试样展平带来的包辛格效应导致屈服强度下降约44 MPa;具有屈服平台的铁素体-珠光体管线钢较针状铁素体管线钢包辛格效应更大;不同显微组织钢板JCOE制管后伸长率均下降;厚径比越大,屈服强度上升越大。
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| 关 键 词： | 管线钢 JCOE 冲击韧性 包辛格效应 显微组织 厚径比 |
Analysis on Mechanical Properties Variation of Pipeline Steel Before and After JCOE Process |
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| DU Wei,LOU Qi,HUANG Lei,WANG Chang-an,YANG Zhuan-zhao.Analysis on Mechanical Properties Variation of Pipeline Steel Before and After JCOE Process[J].Welded Pipe and Tube,2010,33(5):20-23. |
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| Authors: | DU Wei LOU Qi HUANG Lei WANG Chang-an YANG Zhuan-zhao |
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| Affiliation: | DU Wei,LOU Qi,HUANG Lei,WANG Chang-an,YANG Zhuan-zhao(Tubular Goods Research Institute of CNPC,Xi'an 710065,China) |
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| Abstract: | The variations of impact toughness,hardness and tensile properties of X60,X70 and X80 pipeline steel before and after JCOE process are studied,and the influences of sample machining type,microstructures,and t/D ratio to tensile properties are analyzed.The research result shows that impact toughness of different grade pipeline steel all have changed,but for the most part,impact toughness decreases after JCOE process;great hard-working is brought during JCOE process;with regard to X80 pipeline steel,the yield... |
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| Keywords: | JCOE |
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