High-strength Ti-base ultrafine eutectic with enhanced ductility -: art. no. 161907

(Ti0.705Fe0.295)(100-x)Sn-x (x=0 and 3.85) ultrafine eutectics were prepared by slow cooling from the melt through cold crucible casting. The addition of 3.85 at. % Sn to the binary Ti-Fe eutectic decreases the strength slightly but considerably improves the plastic deformability under uniaxial compressive loading from epsilon(f)=2.1% to 9.6% strain to failure. The change in the morphology of the eutectic and the distribution of the FeTi phase are suggested as origin of the improvement of the mechanical properties. (C) 2005 American Institute of Physics.