Author/Authors :
Imayev، نويسنده , , R.M and Salishchev، نويسنده , , G.A and Senkov، نويسنده , , O.N and Imayev، نويسنده , , V.M and Shagiev، نويسنده , , M.R and Gabdullin، نويسنده , , N.K and Kuznetsov، نويسنده , , A.V. and Froes، نويسنده , , F.H، نويسنده ,
Abstract :
Data on superplastic behavior of intermetallic alloys with high ordering energy, such as stoichiometric TiAl and Ti3Al and a number of alloys based on TiAl, with submicron grain size are summarized. The small grain size resulted in a temperature range for superplasticity of 600–900°C that is 200–400°C lower than that for material with micron-sized grains. This paper reports on the effects of grain size, composition and superlattice type on the low-temperature and high temperature superplastic properties of titanium aluminides. Low temperature and high-temperature superplastic properties of the titanium aluminides are compared.
Keywords :
Low-temperature superplasticity , Submicrocrystalline structure , Superlattice type , Titanium aluminides , Microstructural homogeneity
