| 高钢级管线钢应变时效行为分析 |
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| 引用本文： | 高建忠,王春芳,王长安,陈宏达,张鸿博,杨专钊. 高钢级管线钢应变时效行为分析[J]. 材料开发与应用, 2009, 24(3): 86-90 |
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| 作者姓名： | 高建忠 王春芳 王长安 陈宏达 张鸿博 杨专钊 |
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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,陕西,西安,710065
2. 中国石油吐哈油田分公司机械厂,新疆,哈密,839009 |
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| 摘 要： | 应变时效现象会造成管线钢屈服强度和屈强比升高，应力一应变曲线出现明显屈服平台。通过对管线钢及钢管制造和使用过程的分析，指出应变时效行为对钢管生产过程质量控制、现场环焊缝对接以及管线服役性能的稳定性都有不良影响。通过减小钢管管体试样制备温度影响、严格控制防腐层制备工艺加热条件、降低管线钢中的C、N含量以及采用双相显微组织并在终轧时加速冷却后立即进行热处理等方法，可以有效降低应变时效效应。最后，对管线钢的应变时效行为的定量表征提出了建议。
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| 关 键 词： | 应变时效 屈服平台 基于应变的设计 变形 管线钢 |
Strain Aging Behavior of High Strength Linepipe Steel |
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| GAO Jian-zhong,WANG Chun-fang,WANG Chang-an,CHEN Hong-da,ZHANG Hong-bo,YANG Zhuan-zhao. Strain Aging Behavior of High Strength Linepipe Steel[J]. Development and Application of Materials, 2009, 24(3): 86-90 |
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| Authors: | GAO Jian-zhong WANG Chun-fang WANG Chang-an CHEN Hong-da ZHANG Hong-bo YANG Zhuan-zhao |
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| Affiliation: | GAO Jian-zhong1,WANG Chun-fang2,WANG Chang-an1,CHEN Hong-da1,ZHANG Hong-bo1,YANG Zhuan-zhao1(1.Tubular Goods Research Center of CNPC,Xi'an 710065,China,2.Mechanical Factory of Tuha Oilfield Company of PetroChina,Hami 839009,China) |
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| Abstract: | Strain aging effect is likely to bring about increase of yield strength and yield-to-tensile ratio of linepipe steel as well as significant yield point elongation on stress-strain curve.The manufacture and application of line pipe and steel were investigated and it is pointed out that strain aging is harmful in most cases such as the quality control during pipe manufacture,butt welding and pipeline service.Measures such as lowering temperature of specimens,preparation,controlling heating temperature and tim... |
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| Keywords: | Strain aging Yield point elongation Strain-based design Deformability Linepipe steel |
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