Evolution of dislocation substructures in metals via high-strain-rate nanoindentation
Yuwei Zhang, Benjamin L. Hackett, Jiaqi Dong, Kelvin Y. Xie, George M. Pharr · 2023
Read Evolution of dislocation substructures in metals via high-strain-rate nanoindentation by Yuwei Zhang, Benjamin L. Hackett, Jiaqi Dong, Kelvin Y. Xie, George M. Pharr (2023) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-10723145.txt.
Description
Yuwei Zhang and co-authors use a fast indentation method to watch how the inner defect structure of metals changes under rapid loading, in a study from 2023. Materials struck at high speed can fail suddenly if their design ignores such loads. Classic high-rate tests are slow and costly.
The team pressed a tiny tip into two pure metals at rates from very slow to extremely fast. One metal was aluminum and the other molybdenum, chosen as models of two crystal types. Slices were then read under an electron microscope to see the defect patterns, called dislocation substructures. The results help judge when small-scale and large-scale tests can be compared fairly. The method promises faster, cheaper screening of materials for high-rate use.
Catalog record
| CREATOR | Yuwei Zhang, Benjamin L. Hackett, Jiaqi Dong, Kelvin Y. Xie, George M. Pharr |
|---|---|
| YEAR | 2023 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 48 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |