Download file (2.04 MB)
Download as zip (2.01 MB)

Collection

Citation

Description:

It is important to understand the effect of hydrogen on the fatigue properties of materials to ensure the safety and reliability of hydrogen components. In this study, a cold-rolled metastable austenitic stainless steel, JIS-SUS301, with a tensile strength of around 1.3 GPa was prepared and subjected to plane-bending fatigue tests in air at room temperature by using uncharged and H-charged plate specimens with a thickness of 2 mm. A drilled hole or a sharp notch was introduced at the center of the plate specimens to control crack initiation sites. The H-charged specimens were exposed to 100 MPa hydrogen gas at 270°C for 200 h. The results showed that in high-stress amplitude regimes, the fatigue life of the specimens with a drilled hole or a sharp notch was significantly degraded by hydrogen. In contrast, the fatigue limit of the specimens with a drilled hole, which was determined by the critical stress for crack initiation, was not degraded by hydrogen, or was slightly raised, while the fatigue limit of the specimens with a sharp notch, which was determined by the threshold stress for crack propagation, was not affected or was only slightly degraded by hydrogen. Although the effect of hydrogen on the fatigue limit differed between the drilled hole and sharp notch, the difference was not significant.

Rights:

• In Copyright
  

  © 2024 by ASME

Keyword: Hydrogen embrittlement, Fatigue, Austenitic stainless steel, Cold rolling, Strain-induced martensitic transformation

Date published: 2024-07-28

Publisher: American Society of Mechanical Engineers

Journal:

• American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP (ISSN: 0277027X) vol. 4 PVP2024-122356

Conference:

Funding:

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1115/pvp2024-122356

Related item:

Other identifier(s):

Contact agent:

Updated at: 2025-01-10 16:31:51 +0900

Published on MDR: 2025-01-10 16:31:51 +0900