Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7720899 | International Journal of Hydrogen Energy | 2014 | 6 Pages |
Abstract
We explored the influences of hydrogen on small-scale strength of a linepipe steel through nanoindentation experiments with four pyramidal indenters. Interestingly, a transition from hydrogen-induced hardening to softening was observed as indenter sharpness increases. The transition was analyzed based on the enhancement in hydrogen's elastic shielding effects for a sharper indenter, which could be indirectly evidenced by the stress effects on indentation pile-up, dislocation density, and rate dependency of hardness.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Dong-Hyun Lee, Jung-A Lee, Moo-Young Seok, Un Bong Baek, Seung Hoon Nahm, Jae-il Jang,