Effect of Hydrogen on Creep Properties

Masanobu Kubota, Daiskuke Takazaki, Ryosuke Komoda, Kentrao Wada, Toshihiro Tsuchiyama, Mohsen Dadfarnia, Brian P. Somerday, Petros Sofronis

Research output: Chapter in Book/Report/Conference proceedingConference contribution


It is expected that high-temperature hydrogen technologies, such as the solid oxide fuel cell and high-temperature water electrolysis, will play important roles in the hydrogen society. In this study, creep tests of JIS SUS304, SUS304L and SUS310S austenitic stainless steels and SUY-1 pure iron were carried out in hydrogen and argon at 873 K. For all the materials, the creep rate in the secondary creep region in hydrogen environment was increased. It resulted in reduction of the creep life. In argon, the fracture surface of the SUS304 changed from dimple to intergranular fracture with the increase in the creep life. In hydrogen, this change was delayed. Regarding the mechanism, it was confirmed that the effect of carbide formation, HELP and HTHA were not activated in this study. Instead, enhanced dislocation climb mediated by an increased vacancy density is a plausible mechanism, although further investigation is needed.

Original languageEnglish (US)
Title of host publicationTMS 2022 151st Annual Meeting and Exhibition Supplemental Proceedings
Number of pages8
ISBN (Print)9783030923808
StatePublished - 2022
Event151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022 - Anaheim, United States
Duration: Feb 27 2022Mar 3 2022

Publication series

NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


Conference151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022
Country/TerritoryUnited States


  • Austenitic stainless steel
  • Creep
  • Dislocation climb
  • Hydrogen
  • Pure iron

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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