TY - JOUR
T1 - Suppression mechanism of strain-age-hardening in carbon steel associated with hydrogen uptake
AU - Ogawa, Takuro
AU - Koyama, Motomichi
AU - Noguchi, Hiroshi
PY - 2016
Y1 - 2016
N2 - We investigated the suppression mechanism of strain-age-hardening in a ferritic carbon steel associated with hydrogen uptake. We considered hydrogen-related three factors suppressing the strain aging: 1) solution softening, for instance, arising from a reduction in Peierls potential of screw dislocations and a change in Young's modulus, 2) suppression of dislocation-carbon/nitrogen interaction through hydrogen/carbon and nitrogen site competition, and 3) change in plastic strain evolution behavior by hydrogen-enhanced localized plasticity (HELP). According to the present experiments under in-situ hydrogen charging, it was concluded that the solution softening (factor1) and the site competition (factor2) by hydrogen did not significantly suppress the strain aging but the change in the pre-straining behavior (factor3) did.
AB - We investigated the suppression mechanism of strain-age-hardening in a ferritic carbon steel associated with hydrogen uptake. We considered hydrogen-related three factors suppressing the strain aging: 1) solution softening, for instance, arising from a reduction in Peierls potential of screw dislocations and a change in Young's modulus, 2) suppression of dislocation-carbon/nitrogen interaction through hydrogen/carbon and nitrogen site competition, and 3) change in plastic strain evolution behavior by hydrogen-enhanced localized plasticity (HELP). According to the present experiments under in-situ hydrogen charging, it was concluded that the solution softening (factor1) and the site competition (factor2) by hydrogen did not significantly suppress the strain aging but the change in the pre-straining behavior (factor3) did.
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U2 - 10.2355/isijinternational.ISIJINT-2016-063
DO - 10.2355/isijinternational.ISIJINT-2016-063
M3 - Article
AN - SCOPUS:84989233495
VL - 56
SP - 1656
EP - 1661
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 9
ER -