Abstract
The influence of irradiation-induced damage on the interfacial shear strength of Cu-Nb interfaces was characterized via compression of nanolaminate pillars performed in situ in a transmission electron microscope. Chemical mixing and interfacial roughening during MeV Kr ion irradiation leads to increased interfacial shear strength by as much as 60%, from 0.6 GPa for the as-deposited material to 0.95 GPa for samples irradiated at liquid nitrogen temperature. The increase in interfacial shear strength was most pronounced at low temperatures (~-196 °C), but it is still significant at ~300 °C. This observation was correlated with increased chemical mixing at lower temperatures, as determined from compositional profiles characterized by energy-dispersive spectroscopy.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 29-32 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 90 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2014 |
Keywords
- In situ transmission electron microscopy
- Ion beam mixing
- Irradiation
- Shear strength
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys