Effects of Alloying Elements on Deformation Mode in Ti-V Based .BETA. Titanium Alloy System.

Abstract

Quenchedmicrostructures of Til 6V-1Sn-3Al, Ti-1 6V~SSnlAl, and Ti1 6V~Sn3Al. X-ray profiles of the 3 o/, cold rolled samples for (a) Ti-1 6V-5Al andTi-1 6V7Al, and (b) Ti-1 8V-3Al and Ti22V3Al.

Effect of Sn addition on the microstructure and superelasticity in Ti–Nb–Mo–Sn Alloys

“…With the increase of the Sn additions, the deformation mode of the alloy changes from twinning to a 00 transformation, and then to slip. The result is in good agreement with that reported in the previous work [Ishiyam et al, 1991;Ohyama and Nishimura, 1995;Hanada and Izumi, 1982], in which, it was found that (332) deformation twins and a 00 transformation are the dominant deformation modes in the alloys with the highly unstable b phases, while the slip is the dominant deformation mode in the alloys with the stable b phases.…”

Age-hardening behaviour of two metastable beta-titanium alloys

“…Based on earlier empirical observations [14][15][16][17] that alloys containing significant athermal -phase were apparently prone to deformation twinning, the premise of the present work was that the deformation mode of a metastable ␤-Ti alloy might be used as an indicator of the propensity for formation of athermalphase. A semi-empirical, two-dimensional map [19] of bond order B o versus metal d-orbital energy levelsM d was used to identify the composition of alloys likely to deform predominantly by twinning (alloy A1) or slip (alloy A2), and the expected tendency was broadly confirmed.…”

“…A number of reports [14][15][16][17] have indicated that ␤-Ti alloys incorporating athermal -phase exhibit a deformation mode dominated by twinning (typically of the {3 3 2} 1 1 3 type), as opposed to conventional crystallographic slip. In the present study, two novel metastable ␤-alloys with anticipated differing tendencies for athermal -phase formation have been prepared on the basis of their preferred deformation modes.…”

Shape Memory and Mechanical Properties of Biomedical Ti-Sc-Mo Alloys

“…phase formation and solid solution strengthening by Sc as well as Al in Ti-Mo-Al and Ti-V-Al alloys. 6,7) In those alloys, the M s temperature increases with decreasing the athermal ! phase formation in low Al alloys and decreases with increasing the solid solution strengthening of Al in high Al alloys.…”