| 标题 |
 Effect of hydrogen on low-cycle fatigue properties and the mechanism of hysteresis energy method lifetime prediction of X80 pipeline steel |
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| DOI | |
| 其它 |
Abstract The long-term exposure of X80 pipeline steel to hydrogen presents significant challenges. In this study, we establish a quantitative relationship between hydrogen content and the low-cycle fatigue (LCF) lifetime of X80 pipeline steel by integrating fatigue experiments, microstructure characterization, molecular dynamics simulations, and a damage plastic strain energy model. Additionally, we investigate the microscale mechanisms governing microstructure and energy evolution in pipeline steel under LCF loading. These findings contribute to a deeper understanding of the failure mechanisms and provide valuable insights for assessing the safety of hydrogen service in pipelines. |
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(2025-6-4)
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