The decrease of tensile strength for the notched specimens in the hydrogen gas

Hisatake Itoga, Yuichi Suzuki, Hiroshi Noguchi

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

1 Citation (Scopus)

Abstract

We investigated the effect of hydrogen gas environment to 1300MPa tensile strength of chromium-molybdenum steel (JIS SCM435) with a sharp notched specimen. Tensile tests were carried out in hydrogen gas and in helium gas environments. In hydrogen gas environment, the specimen which was not exposed to hydrogen gas and the specimen which was exposed to hydrogen gas for 48h were used. A thermal desorption spectrometry (TDS) analysis was conducted, in order to decide the exposure time to hydrogen gas. As the result of tensile tests, the notch tensile strengths in hydrogen gas exposed specimens was stronger than that of in hydrogen gas non-exposed specimens. We also investigated the crack initiation of notched specimens in hydrogen gas and found that the crack initiation load at the hydrogen gas non-exposed specimen was lower than that of the exposed specimen.

Original languageEnglish
Title of host publication17th European Conference on Fracture 2008
Subtitle of host publicationMultilevel Approach to Fracture of Materials, Components and Structures
Pages1304-1311
Number of pages8
Publication statusPublished - Dec 1 2008
Event17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17 - Brno, Czech Republic
Duration: Sep 2 2008Sep 5 2008

Publication series

Name17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures
Volume2

Other

Other17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
CountryCzech Republic
CityBrno
Period9/2/089/5/08

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

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  • Cite this

    Itoga, H., Suzuki, Y., & Noguchi, H. (2008). The decrease of tensile strength for the notched specimens in the hydrogen gas. In 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures (pp. 1304-1311). (17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures; Vol. 2).