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Study of Hot Deformation Behavior of CuFe2 Alloy

Schindler I., Sauer M., Kawulok P., Rodak K., Hadasik E., Jabłońska M. Barbara, Rusz S., Ševčák V.

Archives of Metallurgy and Materials

2019

Vol. 64, iss. 2

701--706

Nil strength temperature of 1062°C and nil ductility temperature of 1040°C were experimentally set for CuFe2 alloy. The highest formability at approx. 1020°C is unusable due to massive grain coarsening. The local minimum of ductility around the temperature 910°C is probably due to minor formation of γ-iron. In the forming temperatures interval 650-950°C and strain rate 0.1-10 s-1 the flow stress curves were obtained and after their analysis hot deformation activation energy of 380 kJ·mol-1 was achieved. Peak stress and corresponding peak strain values were mathematically described with good accuracy by equations depending on Zener-Hollomon parameter.