Supersaturated solid solutions and metastable phases formation through different stages of mechanical alloying of FeTi

• Published in: Nanostructured materials Vol. 10; no. 3; pp. 365 - 374
• Main Authors: Novakova, A.A., Agladze, O.V., Sveshnikov, S.V., Tarasov, B.P.
• Format: Journal Article Conference Proceeding
• Language: English; Russian
• Published: Oxford Elsevier Science 01.04.1998; Elsevier
• ISSN: 0965-9773; 1872-9150
• DOI: 10.1016/S0965-9773(98)00077-4

Elemental equiatomic Fe-Ti powder mixture was mechanically alloyed in high energy ball mill. XRD, DTA and Mössbauer spectroscopy (at liquid nitrogen temperature) were utilized to monitor the kinetics as well as the accompanied structural and phase transformations through different stages of milling. Our experiments showed that formation of nanocrystalline FeTi compound proceeds via the formation of the supersaturated solid solutions β-Ti(Fe) and α-Fe(Ti) at the interface. After 36 hours of milling, the main part of powder mixture transformed not only to FeTi but also to Fe2Ti intermetallic compound. The transition of last part of super saturated solid solutions β-Ti(Fe) to those intermetallic phases was observed after annealing of this sample at 600 °C.