The second phases in a burn resistant stable beta titanium alloy-Ti40

The second phases in Ti40 (Ti25V-15Cr-0.2Si) burn resistant titanium alloy are studied. The higher solution temperature, the more second phases in Ti40 alloy. There are not second phases if the solution temperature is below 850°C, while there are rod-like α and little Ti5Si3 phases if temperature is...

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Veröffentlicht in:	Journal of materials science 2003-04, Vol.38 (7), p.1579-1584
Hauptverfasser:	ZHAO, Y. Q, QU, H. L, ZHU, K. Y, WU, H, ZHOU, L
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cross-disciplinary physics: materials science rheology Exact sciences and technology Fire resistance Fractures Materials science Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Phase diagrams and microstructures developed by solidification and solid-solid phase transformations Phases Physics Precipitates Precipitation Solid-phase precipitation Thermal stability Titanium alloys Titanium base alloys
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Zusammenfassung:	The second phases in Ti40 (Ti25V-15Cr-0.2Si) burn resistant titanium alloy are studied. The higher solution temperature, the more second phases in Ti40 alloy. There are not second phases if the solution temperature is below 850°C, while there are rod-like α and little Ti5Si3 phases if temperature is over 850°C. α, Ti5Si3 and oblique α′′ phases emerge after Ti40 solution at 910°C followed by aging at 600°C, while only Ti5Si3 phases emerge after solution at 860°C followed by aging at 600°C. The effect of the second phases on properties at RT are not obvious. There are different shapes of α and Ti5Si3 precipitates after Ti40 alloy exposure at 540°C for 100 h, which decreases the thermal stability.
ISSN:	0022-2461 1573-4803
DOI:	10.1023/A:1022901404905