Synthesis and characterization of an in situ consolidated nanocrystalline Cu88Al11.5Y0.5 alloy
| Autor: | Koushik Sikdar, Ronald O. Scattergood, Debdas Roy, Somraj Chakravarty, Carl C. Koch |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
In situ Materials science Annealing (metallurgy) Mechanical Engineering Alloy Metallurgy Metals and Alloys 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Grain size Nanocrystalline material Mechanics of Materials Transmission electron microscopy 0103 physical sciences Materials Chemistry engineering Grain boundary 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 717:219-225 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2017.05.092 |
| Popis: | Artifact-free bulk nanocrystalline Cu88Al11.5Y0.5 alloy has been synthesized by in situ consolidation of mechanically alloyed powder blend followed by annealing of the consolidated compact at 200 °C (or 0.35 Tm) for 30 min. Grain size determination and phase identification have been carried by X-ray line broadening analysis and transmission electron microscopy (TEM). Hardness measurement has demonstrated that the Hall-Petch effect is the dominant strengthening mechanism for both as-consolidated and annealed specimens. Strength improvement after short annealing time was attributed to the relaxations of non-equilibrium grain boundaries. |
| Databáze: | OpenAIRE |
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