TY - GEN
T1 - Effect of hydrogen on microscopic deformation process near stage II fatigue crack tip
AU - Takahashi, Yoshimasa
AU - Tanaka, Masaki
AU - Higashida, Kenji
AU - Noguchi, Hiroshi
PY - 2009/12/1
Y1 - 2009/12/1
N2 - The effect of hydrogen on the crack tip cyclic slip deformation is investigated using a single-crystalline Fe-3.2%Si alloy. The fracture surface and the near-tip cross-section are observed in detail by SEM and TEM respectively. The cyclic slip-off process by a pair of symmetrical slip system about the crack ((11̄2̄)[11̄1̄] / (11̄2)[1̄11] pair) is operative in the non-hydrogen atmosphere. On the other hand, other pairs of slip system ((011)[11̄1] / (101)[1̄11] pair and (1̄01)[11̄1] / (01̄1)[1̄11] pair) are also found to be operative and slip is localized around the vicinity of the crack in the hydrogen atmosphere.
AB - The effect of hydrogen on the crack tip cyclic slip deformation is investigated using a single-crystalline Fe-3.2%Si alloy. The fracture surface and the near-tip cross-section are observed in detail by SEM and TEM respectively. The cyclic slip-off process by a pair of symmetrical slip system about the crack ((11̄2̄)[11̄1̄] / (11̄2)[1̄11] pair) is operative in the non-hydrogen atmosphere. On the other hand, other pairs of slip system ((011)[11̄1] / (101)[1̄11] pair and (1̄01)[11̄1] / (01̄1)[1̄11] pair) are also found to be operative and slip is localized around the vicinity of the crack in the hydrogen atmosphere.
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M3 - Conference contribution
AN - SCOPUS:77649107743
SN - 9781615030033
T3 - Proceedings of the 2008 International Hydrogen Conference - Effects of Hydrogen on Materials
SP - 203
EP - 210
BT - Proceedings of the 2008 International Hydrogen Conference - Effects of Hydrogen on Materials
T2 - 2008 International Hydrogen Conference - Effects of Hydrogen on Materials
Y2 - 7 September 2008 through 10 September 2008
ER -