Engineering & Technologies, Vol 8, No 6 (2015)

The study of the flow stress during superplastic deformation Co-Ni-Nb alloy

Aidyn Е Tussupzhanov, Dosym Yerbolatuly, Ludmila Kveglis, Ivan Nemcev

Abstract


The article describes an experimental method for estimating the true flow stress  at superplastic deformation. Studied changes of the true stress at superplastic deformation in optimally mode the precipitation-hardening alloy of cobalt-nickel-niobium. The microstructure of the alloy according to the extent of superplastic deformation