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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.
Superplastic tension test was carried out in order to examine anisotropy of superplasticity in hot-rolled sheet of Ti-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 rate range 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.