Journal
MATERIALS CHARACTERIZATION
Volume 178, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2021.111238
Keywords
Laser-inert gas condensation; Nanocrystalline; Ti-Fe alloy; omega-Phase; Phase transformation
Categories
Funding
- Fundamental Research Funds for the Central Universities [30919011404, 30919011107]
- National Natural Science Foundation of China [51520105001, 51871120, 52001166, 51571119, 51905268]
- Natural Science Foundation of Jiangsu Province [BK20200019, BK20200503]
- Qing Lan project
- distinguished professor project of Jiangsu province
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The omega single-phase nanocrystalline Ti-Fe alloy was prepared for the first time using the laser-inert gas condensation method. By annealing at different temperatures, both omega + alpha dual-phase and alpha single-phase structures were achieved. This study pushed the limit of omega-phase content to 100% in NC Ti alloy and provided scientific insights into tailoring phases from an omega single-phase structure.
By using the laser-inert gas condensation (laser-IGC) method, an omega single-phase nanocrystalline (NC) Ti-Fe alloy was prepared for the first time. After annealing at 300 degrees C for 1 h, omega + alpha dual-phase structure was obtained via the omega -> alpha phase transition, while an alpha single-phase structure was achieved when annealed at 350 degrees C for 1 h. The formation and decomposition of omega-phase were discussed. This work pushed the limit of omega-phase content in NC Ti alloy to 100% and provided scientific insights in tailoring the phases from an omega single-phase structure.
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