Loading...
Please wait, while we are loading the content...
Similar Documents
Elastic Property Dependence on Mobile and Trapped Hydrogen in Ni-201
| Content Provider | Semantic Scholar |
|---|---|
| Author | Lawrence, Samantha Kay Somerday, Brian Paul Karnesky, Richard A. |
| Copyright Year | 2017 |
| Abstract | Enhanced dislocation processes can accompany decohesion mechanisms during hydrogen degradation of ductile structural metals. However, hydrogen–deformation interactions and the role of defects in degradation processes remain poorly understood. In the current study, nanoindentation within specifically oriented grains in as-received, hydrogen-charged, aged, and hydrogen re-charged conditions revealed a “hysteresis” of indentation modulus, while the indentation hardness varied minimally. Thermal pre-charging with approximately 2000 appm hydrogen decreases the indentation modulus by ~20%, aging leads to a slight recovery, but re-charging drives the modulus back down to values similar to those measured in the hydrogen-charged condition. This “hysteresis” indicates that dissolved interstitial hydrogen is not solely responsible for mechanical property alterations; hydrogen trapped at defects also contributes to elastic property variation. |
| Starting Page | 45 |
| Ending Page | 50 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s11837-016-2157-x |
| Alternate Webpage(s) | http://arc.nucapt.northwestern.edu/refbase/files/Lawrence-2017_11516.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s11837-016-2157-x |
| Volume Number | 69 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
