Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5146478 | International Journal of Hydrogen Energy | 2017 | 10 Pages |
Abstract
In situ electrochemical nanoindentation has been used to study the effect of hydrogen on the nanomechanical response of Alloy 718. Observations show that hardness increase as a result of hydrogen charging. Also, the hydrogen charging gives a reduced pop-in load and pop-in width. This is related to a reduction in the energy needed for dislocation nucleation and the mobility of the dislocations in the presence of hydrogen. Two grains with different orientations has been tested here. The pop-in load and width obtained in the (101) orientation was more affected by the presence of hydrogen than those achieved in the (111) oriented grain.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Gaute Stenerud, Roy Johnsen, Jim Stian Olsen, Jianying He, Afrooz Barnoush,