Effect of Absorbed Hydrogen on the Near Threshold Fatigue Crack Growth Behavior of Short Crack

Keiko Shishime; Masanobu Kubota; Yoshiyuki Kondo

doi:10.4028/www.scientific.net/MSF.567-568.409

Paper Titles

Casting Porosity and Long-Life Fatigue Strength of a Cast Al-Alloy
p.393

Fatigue Striations and Fissures in 2024-T3 Aluminum Alloy
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Cyclic Stress in 316L Austenitic Stainless Steel at Low Temperatures
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Estimate of Stress in the Channel of Persistent Slip Bands Based on Dislocation Dynamics
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Effect of Absorbed Hydrogen on the Near Threshold Fatigue Crack Growth Behavior of Short Crack
p.409

The Effect of Lüders' Flow on Brittle Fracture Initiation in Pearlitic Steel
p.413

Microstructure Properties and Fracture Behaviors of Tungsten Alloys
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Multiscale 2D Rectangular and 3D Rhombic Gratings Created by Self-Organization of Crystal Structure Defects under Constrained Cyclic Deformation and Fracture
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Propagation Behaviour of Microstructurally Short Fatigue Cracks in the High-Cycle- and Very-High-Cycle Fatigue Regimes
p.425

HomeMaterials Science ForumMaterials Science Forum Vols. 567-568Effect of Absorbed Hydrogen on the Near Threshold...

Effect of Absorbed Hydrogen on the Near Threshold Fatigue Crack Growth Behavior of Short Crack

Abstract:

Hydrogen is considered to be a possible energy source in the coming future. However, it has been recognized that hydrogen has a detrimental effect on the fatigue strength of metal. The fatigue crack growth characteristic is an important property for the integrity assessment of hydrogen utilization machine. In this report, the effect of hydrogen on the fatigue crack propagation characteristic was studied using low alloy steel, carbon steels and A286 alloy. Especially in this study, very short pre-cracked specimen as small as 0.03 mm deep was used and the near threshold fatigue crack behavior was studied. As a result, materials whose Vickers hardness was higher than 300 were found to be susceptible to absorbed hydrogen.