| 高钢级管线钢应变时效行为对其应用的影响 |
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| 引用本文： | 谢文江,吉玲康.高钢级管线钢应变时效行为对其应用的影响[J].石油矿场机械,2010,39(2):59-64. |
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| 作者姓名： | 谢文江 吉玲康 |
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| 作者单位： | 1. 中国石油天然气集团公司,管材研究所·石油管力学和环境行为重点实验室,西安,710065
2. 中国石油天然气集团公司,管材研究所·石油管力学和环境行为重点实验室,西安,710065;西安交通大学,材料科学与工程学院,西安,710049 |
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| 摘 要： | 在经过防腐热涂敷、焊接受热过程或服役一段时间后,管线钢材料会产生应变时效作用,其表现为拉伸应力应变曲线形状发生变化,屈服强度及屈强比升高,形变强化指数下降等。应变时效对管线主要的影响包括承压能力、环焊缝匹配、压缩应变容量、低周疲劳强度等。提出了改进措施。
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| 关 键 词： | 管线钢 应变时效 热涂敷 力学性能 |
Effects of Strain-aging on Application of High-grade Pipeline Steels |
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| XIE Wen-jiang,JI Ling-kang.Effects of Strain-aging on Application of High-grade Pipeline Steels[J].Oil Field Equipment,2010,39(2):59-64. |
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| Authors: | XIE Wen-jiang JI Ling-kang |
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| Affiliation: | XIE Wen-jiang1,JI Ling-kang1,2(1.CNPC Research Institute of Tubular Goods,Key Laboratory for Mechanical , Environment Behavior of Tubular Goods of CNPC,Xi\'an 710065,China,2.School of Material Science & Engineering,Xi\'an Jiaotong University,Xi\'an 710049,) |
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| Abstract: | After anti-corrosion thermal coating,girth welding or service,pipeline steels always show a strain aging effect.It presents mainly shape changes of tensile stress-strain curve,rise of yield strength and yield ratio,and drop of strain hardening exponent.Therefore,the effects of strain aging on pipeline service should be investigated.They are mainly on collapse resistance,girth weld matching,compressive strain capacity,low-cycle fatigue strength,etc. |
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| Keywords: | pipeline steel strain-aging thermal coating mechanical properties |
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