Abstract
We demonstrate that a strong surface segregation of one of the components of the binary polycrystalline material can lead to barrier-less pore formation at the triple and quadruple junctions of the grain boundaries. These pores deplete the bulk of the polycrystal from the segregating component, which can lead to a local minimum in the dependence of the Gibbs free energy of the system on the pore size. We show that in some cases a porous polycrystal can be thermodynamically stabilized.
| Original language | English |
|---|---|
| Pages (from-to) | 75-79 |
| Number of pages | 5 |
| Journal | Scripta Materialia |
| Volume | 156 |
| DOIs | |
| State | Published - Nov 2018 |
Keywords
- Grain boundary segregation
- Modeling
- Nanocrystalline materials
- Surface segregation
- Thermodynamics
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- General Materials Science
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