| 高Nb X80管线钢的应变时效研究 |
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| 引用本文： | 刘振伟,郭晖,尚成嘉.高Nb X80管线钢的应变时效研究[J].焊管,2011,34(5):12-16. |
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| 作者姓名： | 刘振伟 郭晖 尚成嘉 |
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| 作者单位： | 1. 渤海装备华油钢管有限公司,河北,青县,062650
2. 北京科技大学,北京,100083 |
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| 摘 要： | 介绍了高Nb X80管线钢在1%,2%,3%环向应变低温时效表现出的较高屈强比以及较差力学性能,在管线钢的后续应用中带来了很多安全隐患.通过试验的方法,在650℃下对母材进行高温预回火50 min后应变时效发现,高温预回火能提高强度的同时,也能降低屈强比,从而提高了X80管线钢的综合力学性能,为研究高Nb管线钢的应变时...
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| 关 键 词： | X80管线钢 应变时效 屈强比 高温预回火 |
Study on Strain Aging of X80 Pipeline Steel with High Nb |
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| LIU Zhen-wei,GUO Hui,SHANG Cheng-jia.Study on Strain Aging of X80 Pipeline Steel with High Nb[J].Welded Pipe and Tube,2011,34(5):12-16. |
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| Authors: | LIU Zhen-wei GUO Hui SHANG Cheng-jia |
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| Affiliation: | 1.North China Petroleum Steel Pipe Co.,Ltd of Bohai Equipment Manufacturing Co.,Ltd.,Qingxian 062650,Hebei,China; 2.University of Science and Technology Beijing,Beijing 100083,china) |
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| Abstract: | It introduced the higher yield ratio and the worse mechanical property of X80 pipeline steel with high Nb after 1%,2% and 3% circumferential strain at low temperature,which caused a lot of safety risks in subsequent application of pipeline steel.Pre-tempering was conducted in base material at 650 ℃ for 50 min(strain aging),it found that high temperature pre-tempering can increase strength,but at the same time it also can reduce yield ratio,so it can improve comprehensive mechanical properties of X80 pipeline steel,this will be helpful to research strain aging and its rule of pipeline steel with high Nb. |
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| Keywords: | X80 pipeline steel strain aging yield ratio high temperature pre-tempering |
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