Heterogeneous nucleation theory revisited: Effect of triple junction line energy
| Autor: | Y. Yin, R.G. Faulkner, Lasar S. Shvindlerman |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Plane (geometry) Mechanical Engineering Triple junction Energy balance Nucleation Boundary (topology) 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Surface energy Crystallography Mechanics of Materials 0103 physical sciences General Materials Science Grain boundary 0210 nano-technology Line (formation) |
| Zdroj: | Materials Letters. 174:180-183 |
| ISSN: | 0167-577X |
| Popis: | This paper will re-consider the basic aspects of solid state classical heterogeneous nucleation theory. In particular it will show how recent experimental work that has been able to estimate grain boundary triple junction line energy can be used to supplement the understanding of the energy balance operating during nucleation. This implies that the energy of the newly created interface needs to be recalculated, assuming that the additional line energy of the line surrounding the precipitate in the plane of the boundary is taken into account. Examples will be given of the application of this revised approach to GB precipitate nucleation of cap-shaped particles of chromium carbide in nickel based alloys. It will be shown that original assumed values of the precipitate-matrix interfacial energy for this transformation have to be revised downward for critical nucleus sizes of less than about 10 nm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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