机械-电化学耦合作用下管道缺陷对应力腐蚀的影响
Study on the Effect of Pipeline Defects on Stress Corrosion under Mechano-Electrochemical Interaction
张成斌 1周洋洋 2杨春刚 3马春迅 2张晨 2张玉红 2毕海胜2
作者信息
- 1. 陕西延长石油(集团)有限责任公司研究院
- 2. 青岛科技大学机电工程学院
- 3. 淄博市能源集团有限责任公司
- 折叠
摘要
基于有限元数值模拟方法,研究高强度管线钢在不同应力应变和不同缺陷尺寸下的应力腐蚀行为.结果表明,相较于弹性变形阶段,塑性变形阶段的机械-电化学耦合效应更加显著,缺陷深度相较于缺陷长度对应力腐蚀速率的影响更大.
Abstract
Based on finite element simulation method,the stress corrosion behavior of high-strength pipeline steel under different stress-strain and at defect sizes were studied to show that,compared to the e-lastic deformation stage,the mechano-electrochemical(M-E)interaction becomes more significant in the plastic deformation stage of pipeline steel,and the depth of defects has a greater impact on the stress cor-rosion rate compared to the length of defects.
关键词
管道缺陷/应力腐蚀/机械-电化学效应/应变/数值仿真Key words
pipeline defect/stress corrosion/mechano-electrochemical interaction/strain/numerical simulation引用本文复制引用
基金项目
山东省自然科学基金(ZR2017BEE068)
山东省油气储运安全重点实验室开放基金(19CX05007A)
山东省重点研发计划(2019GGX104034)
出版年
2024
NETL
NSTL
万方数据