A novel eutectic Fe-15 wt.% Ti alloy with an ultrafine lamellar structure for high temperature applications

A eutectic Fe-15 wt.% Ti alloy was found to consist of a ferrite phase and ultrafine Fe2Ti lamellar phase. The ultrafine lamellar structure was discovered to be thermally stable at temperatures up to 600 °C. Furthermore, the alloy also exhibited a very high yield strength (780 MPa) at this temperatu...

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Veröffentlicht in:	Intermetallics 2013-04, Vol.35, p.41-44
Hauptverfasser:	Barbier, D., Huang, M.X., Bouaziz, O.
Format:	Artikel
Sprache:	eng
Schlagworte:	A. Intermetallics, miscellaneous B. Yield stress C. Reaction synthesis Calcium aluminum ferrite D. Phase interfaces Engineering Sciences Eutectic temperature Ferrous alloys G. Thermoelectric power generation Intermetallics Lamellar structure Materials Thermal stability Titanium base alloys Yield strength
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Beschreibung
Zusammenfassung:	A eutectic Fe-15 wt.% Ti alloy was found to consist of a ferrite phase and ultrafine Fe2Ti lamellar phase. The ultrafine lamellar structure was discovered to be thermally stable at temperatures up to 600 °C. Furthermore, the alloy also exhibited a very high yield strength (780 MPa) at this temperature so that it can be considered as a potential engineering alloy for structural applications at this temperature regime. ► A eutectic Fe-15 wt.% Ti alloy presents a fine lamellar structure (ferrite + Fe2Ti). ► Both inter-lamellar spacing and Fe2Ti lamella thickness are smaller than 1 μm. ► Its yield stress at 600 °C is as high as 780 MPa.
ISSN:	0966-9795
DOI:	10.1016/j.intermet.2012.11.016