TY - JOUR
T1 - Hydrogen-enhanced localized plasticity-a mechanism for hydrogen-related fracture
AU - Birnbaum, H. K.
AU - Sofronis, P.
N1 - Funding Information:
This work was supported by the Department of Energy under grant DEFG02-91 ER45439..
PY - 1994/3/31
Y1 - 1994/3/31
N2 - The mechanisms of hydrogen-related fracture are briefly reviewed and a few evaluative statements are made about the stress-induced hydride formation, decohesion, and hydrogen-enhanced localized plasticity mechanisms. A more complete discussion of the failure mechanism based on hydrogen-enhanced dislocation mobility is presented, and these observations are related to measurements of the macroscopic flow stress. The effects of hydrogen-induced slip localization on the measured flow stress is discussed. A theory of hydrogen shielding of the interaction of dislocations with elastic stress centres is outlined. It is shown that this shielding effect can account for the observed hydrogen-enhanced dislocation mobility.
AB - The mechanisms of hydrogen-related fracture are briefly reviewed and a few evaluative statements are made about the stress-induced hydride formation, decohesion, and hydrogen-enhanced localized plasticity mechanisms. A more complete discussion of the failure mechanism based on hydrogen-enhanced dislocation mobility is presented, and these observations are related to measurements of the macroscopic flow stress. The effects of hydrogen-induced slip localization on the measured flow stress is discussed. A theory of hydrogen shielding of the interaction of dislocations with elastic stress centres is outlined. It is shown that this shielding effect can account for the observed hydrogen-enhanced dislocation mobility.
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U2 - 10.1016/0921-5093(94)90975-X
DO - 10.1016/0921-5093(94)90975-X
M3 - Article
AN - SCOPUS:0028401434
SN - 0921-5093
VL - 176
SP - 191
EP - 202
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
IS - 1-2
ER -