TY - GEN
T1 - Effect of ammonia impurity on hydrogen embrittlement of scm440 low-alloy steel in hydrogen gas
AU - Nan, Zhang
AU - Komoda, Ryosuke
AU - Yamada, Kazuki
AU - Volkert, Cynthia A.
AU - Tian, Lin
AU - Kirchheim, Reiner
AU - Sofronis, Petros
AU - Hosseinisarani Zahra, S.
AU - Dadfarnia, Mohsen
AU - Kubota, Masanobu
AU - Staykov, Aleksandar
N1 - Funding Information:
This study was supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan. The International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) is supported by the World Premier International Research Center Initiative (WPI), MEXT, Japan.
PY - 2020
Y1 - 2020
N2 - Ammonia (NH3) was added to hydrogen gas as an impurity, then hydrogen embrittlement (HE) of the SCM440 low-alloy steel was investigated by fracture toughness tests. NH3 showed inhibition of the HE when the loading rate was relatively high. However, the inhibitory effect decreased with the decrease in the loading rate, as well as with an increase in the gas pressure. It was found that NH3 acted as both an inhibitor of the HE and a cause of the HE depending on the loading rate and gas pressure.
AB - Ammonia (NH3) was added to hydrogen gas as an impurity, then hydrogen embrittlement (HE) of the SCM440 low-alloy steel was investigated by fracture toughness tests. NH3 showed inhibition of the HE when the loading rate was relatively high. However, the inhibitory effect decreased with the decrease in the loading rate, as well as with an increase in the gas pressure. It was found that NH3 acted as both an inhibitor of the HE and a cause of the HE depending on the loading rate and gas pressure.
UR - http://www.scopus.com/inward/record.url?scp=85090908849&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85090908849&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85090908849
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 3030
EP - 3035
BT - 30th International Ocean and Polar Engineering Conference
PB - International Society of Offshore and Polar Engineers
T2 - 30th International Ocean and Polar Engineering Conference, ISOPE 2020
Y2 - 11 October 2020 through 16 October 2020
ER -