Hydrogen-induced degradation of high-strength steel pipeline welds: A critical review

管道(软件) 降级(电信) 材料科学 焊接 氢脆 微观结构 扩散 压力(语言学) 冶金 核工程 法律工程学 环境科学 腐蚀 机械工程 计算机科学 工程类 化学 热力学 物理 哲学 有机化学 电信 语言学
作者
Yinghao Sun,Y. Frank Cheng
出处
期刊:Engineering Failure Analysis [Elsevier BV]
卷期号:133: 105985-105985 被引量:62
标识
DOI:10.1016/j.engfailanal.2021.105985
摘要

High-strength steel pipeline technology has been developing in the past decade in response to rapidly increasing energy demand. The unique metallurgical microstructure at pipeline welds, which is combined with a synergism of hydrogen and stress, makes the area prone to hydrogen-induced degradation, resulting in pipeline failure. This work developed a comprehensive review on hydrogen permeation, diffusion and trapping, as well as the resulting hydrogen degradation at pipeline welds. While major efforts have been made to study the hydrogen degradation behavior, there is still a big space on further investigation and understanding of the problem, especially for the high-strength steel welds. Conventional testing techniques are difficult to obtain convincing results to understand the mechanism for hydrogen degradation, especially at an atomic scale. Modern computational and modeling techniques provide promising alternatives to define the hydrogen diffusion and trapping and the pipeline degradation at the welds. It is expected that a combination of computational modeling and material characterization with an improved spatial resolution can advance our understanding about the hydrogen degradation of the high-strength steel pipeline welds.
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