Hardening in the Transition to Nanocrystalline State in Pure Metals and Solid Solutions (Ultimate Hardening)
| Autor: | O. A. Shut, S. A. Firstov, T. G. Rogul |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
020502 materials Pure metals Metals and Alloys Thermodynamics Modulus 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Nanocrystalline material Grain size 0205 materials engineering Mechanics of Materials Impurity Materials Chemistry Ceramics and Composites Hardening (metallurgy) Grain boundary 0210 nano-technology Solid solution |
| Zdroj: | Powder Metallurgy and Metal Ceramics. 57:161-174 |
| ISSN: | 1573-9066 1068-1302 |
| DOI: | 10.1007/s11106-018-9964-2 |
| Popis: | The state of the grain boundaries and the solid solution is analyzed for influence on the yield stress over a wide range of grain sizes for pure metals, low-doped alloys, and multicomponent solid solutions, including high-entropy alloys. A generalized equation is derived using the averaging integrals to describe the yield stress and hardness normalized to Young’s modulus versus the grain size. The potential to reach the maximum hardening for nanostructured materials through the use of grain-boundary engineering is considered. The concept of ‘useful’ impurities intended to bring the strength of such materials to the level comparable with the maximum (theoretically) possible one (E/2π–E/30) is proposed. |
| Databáze: | OpenAIRE |
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