Superplastic tension test was carried out in order to examine anisotropy of superplasticity in hot- rolled sheet ofTi-10V-2Fe-3Al. The experiments show that flow stress in longitudinai(L) direction is higher than that in transveral(T) directionof the sheet. The peak value of elongation in L direction specimen is also higher than that of transversal one within strain raterange of 0.0005～0.0083 / s. Based on some experiments results such as the microstructure change of specimen before and aftersuperplastic deformation, analysis is made for the phenomenon of multi-necking on the T specimen after tension. The flowlines insuperplastically deformed specimen are first observed and described. Preliminary explanation is made on these flowlines.
展开▼
