Thermodynamic mechanisms of mechanical crystallization of amorphous Fe–N alloy
| Autor: | Li Liu, Bin Yao, Xudong Zhao, Si Lun, Shu-E Liu, Wenhui Su |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Amorphous metal
Materials science Annealing (metallurgy) Mechanical Engineering Metallurgy Alloy Metals and Alloys engineering.material Amorphous solid law.invention Pressure range Chemical engineering Mechanics of Materials law High pressure Materials Chemistry engineering Crystallization Ball mill |
| Zdroj: | Journal of Alloys and Compounds. 333:202-206 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/s0925-8388(01)01721-2 |
| Popis: | An amorphous Fe–N alloy is prepared by ball milling a mixture of Fe and hexagonal boron nitride. Its crystallization processes were studied upon mechanical milling and annealing under normal and high pressure. The crystallization product of the amorphous Fe–N alloy induced by mechanical milling and annealing at temperatures between 690 and 800 K under pressures of 3–4 GPa is the e-Fe x N phase, while the thermal crystallization product under normal pressure is γ′-Fe 4 N. The difference in crystallization product between mechanical crystallization and thermal crystallization is attributed to the effects of local pressure and local temperature produced by ball collisions on crystallization of amorphous Fe–N alloy. |
| Databáze: | OpenAIRE |
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