Microstructure and Mechanical Properties of Cast Ti25Nb3Mo3Zr2Sn Alloy
The microstructure and mechanical properties of a cast near β type titanium alloy, Ti-25Nb-3Zr-3Mo-2Sn, have been investigated in this paper. In the as cast condition, the alloy possesses coarse, equiaxed β grains and Transmission Electron Microscopy(TEM) observations showed the ω phase is also present in this condition. The alloy in the as cast condition has low strength and is highly ductile. Direct ageing at 450°C for 4 hours leads to the formation of a large number of fine scale α phase precipitates. The alloy in the aged condition is less ductile but exhibits significantly enhanced strength.
Zhengyi Jiang and Chunliang Zhang
G. Wang et al., "Microstructure and Mechanical Properties of Cast Ti25Nb3Mo3Zr2Sn Alloy", Advanced Materials Research, Vols. 97-101, pp. 488-491, 2010