| Autor: |
Sergiy V. Divinski, Yong Soo Kang, Chr. Herzig, Jai Sung Lee |
| Rok vydání: |
2004 |
| Předmět: |
|
| Zdroj: |
Zeitschrift für Metallkunde. 95:76-79 |
| ISSN: |
0044-3093 |
| DOI: |
10.3139/146.017921 |
| Popis: |
63Ni grain boundary (GB) diffusion in polycrystalline γ-Fe–Ni alloy was measured by the conventional radiotracer method. The double product P = δ × Dgb (δ is the GB width and Dgb is the GB diffusivity) was found to follow the Arrhenius relationship P = 1.31 × 10–13 × exp(–157 kJ mol–1/RT) m3/s, where R is the gas constant and T is the temperature. The results in the coarse-grained material (grain size d ≈ 0.5 mm) were discussed in comparison with our previous investigation of Ni diffusion in a nanocrystalline alloy (d ≈ 100 nm) of the same composition. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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