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- W2898087655 abstract "One of the most efficient methods for supplying gaseous hydrogen long distances is by using steel pipelines. However, steel pipelines exhibit accelerated fatigue crack growth rates in gaseous hydrogen relative to air. Despite conventional expectations that higher strength steels would be more susceptible to hydrogen embrittlement, recent testing on a variety of pipeline steel grades has shown a notable independence between strength and hydrogen assisted fatigue crack growth rate. It is thought that microstructure may play a more defining role than strength in determining the hydrogen susceptibility. Among the many factors that could affect hydrogen accelerated fatigue crack growth rates, this study was conducted with an emphasis on orientation dependence. The orientation dependence of toughness in hot rolled steels is a well-researched area; however, few studies have been conducted to reveal the relationship between fatigue crack growth rate in hydrogen and orientation. In this work, fatigue crack growth rates were measured in hydrogen for high strength steel pipeline with different orientations. A significant reduction in fatigue crack growth rates were measured when cracks propagated perpendicular to the rolling direction. A detailed microstructural investigation was performed, in an effort to understand the orientation dependence of fatigue crack growth rate performance of pipeline steels in hydrogen environments." @default.
- W2898087655 created "2018-11-02" @default.
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- W2898087655 date "2018-07-15" @default.
- W2898087655 modified "2023-09-27" @default.
- W2898087655 title "Orientation Dependence of Hydrogen Accelerated Fatigue Crack Growth Rates in Pipeline Steels" @default.
- W2898087655 doi "https://doi.org/10.1115/pvp2018-84835" @default.
- W2898087655 hasPublicationYear "2018" @default.
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