Solid-Phase Reactions in Mechanically Activated Nanocrystalline Fe–Cr Alloys upon Thermal Treatment
| Autor: | V. E. Porsev, A. L. Ulyanov |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Diffraction Range (particle radiation) Materials science 010308 nuclear & particles physics Annealing (metallurgy) Alloy Analytical chemistry General Physics and Astronomy Thermal treatment Atmospheric temperature range engineering.material 01 natural sciences Nanocrystalline material 0103 physical sciences Mössbauer spectroscopy engineering |
| Zdroj: | Bulletin of the Russian Academy of Sciences: Physics. 84:1165-1168 |
| ISSN: | 1934-9432 1062-8738 |
| DOI: | 10.3103/s1062873820090270 |
| Popis: | X-ray diffraction and Mossbauer spectroscopy are used to study solid-phase reactions that occur in Fe–Cr nanocrystalline alloys during heat treatment. Upon the isochronous annealing of mechanically alloyed Fe–Cr powders, the nanostructural state is retained for all samples up to a temperature of 700°C. Fe(80)Cr(20) alloy tends to separate throughout the range of annealing temperatures. The annealing of all samples in the temperature range of 400–500°C results in separation into iron-enriched and chromium-enriched regions. A change in the trend toward short range ordering is observed in the samples of Fe(70)Cr(30) and Fe(60)Cr(40) at annealing temperatures above 500°C. Annealing samples of Fe(52)Cr(48) at temperatures above 600°C results in the formation of the σ-phase. |
| Databáze: | OpenAIRE |
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