TY - GEN
T1 - The decrease of tensile strength for the notched specimens in the hydrogen gas
AU - Itoga, Hisatake
AU - Suzuki, Yuichi
AU - Noguchi, Hiroshi
PY - 2008/12/1
Y1 - 2008/12/1
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84866054822
SN - 9781617823190
T3 - 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures
SP - 1304
EP - 1311
BT - 17th European Conference on Fracture 2008
T2 - 17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
Y2 - 2 September 2008 through 5 September 2008
ER -