Laser-induced self-propagating reaction synthesis of Ti–Fe alloys

Ti 70.5 Fe 29.5 alloy is synthesized using laser-induced self-propagating reaction synthesis (LSRS). The product mainly consists of β-Ti + TiFe eutectic. However, a given amount of oxygen-stabilized Ti 2 Fe phase is also found in the product due to high cooling rate and oxygen existence. The formati...

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Veröffentlicht in:	Journal of materials science 2008, Vol.43 (1), p.218-221
Hauptverfasser:	Wang, C. S., Zhang, K. S., Pang, H. J., Chen, Y. Z., Dong, C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Compressibility Compressive strength Cooling rate Cross-disciplinary physics: materials science rheology Crystallography and Scattering Methods Diffusion layers Eutectic alloys Eutectic reactions Eutectics Exact sciences and technology Ferrous alloys Iron Iron compounds Materials Science Melting Other topics in materials science Oxygen Physics Polymer Sciences Reaction synthesis Self propagation Solid Mechanics Titanium Titanium base alloys
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Beschreibung
Zusammenfassung:	Ti 70.5 Fe 29.5 alloy is synthesized using laser-induced self-propagating reaction synthesis (LSRS). The product mainly consists of β-Ti + TiFe eutectic. However, a given amount of oxygen-stabilized Ti 2 Fe phase is also found in the product due to high cooling rate and oxygen existence. The formation of the fine eutectic structure makes the alloy exhibit high hardness (9.34 GPa), high compressive strength (2609 MPa), and good relative compressibility (8.5%). The phase formation during LSRS can be divided into four stages: melting of Fe particle periphery, formation of a liquid-state Ti–Fe diffusion layer, eutectic reaction, and formation of oxygen-stabilized Ti 2 Fe phase.
ISSN:	0022-2461 1573-4803
DOI:	10.1007/s10853-007-2146-0