Abstract
This study was conducted to examine the effect of aging after cold-rolling on microstructure and mechanical properties of β-type titanium alloy Ti-20V-4Al-1Sn. Aging was carried out at 473 K after cold-rolling of 30% reduction. The results showed that not only age-hardening was accelerated by cold-rolling but also the maximum hardness and static strength of the alloy were greatly increased. TEM micrographs suggested that the above phenomena were because a lot of dislocations which were introduced through cold-rolling gave preferential sites for phase precipitation so that the phase was densely precipitated.
