The stress-strain curves of nickel base corrosion resistant alloy GH536B(G3:0.002C
20.30Cr
17.50Fe
8.70Mo
1.32W
1.90Cu
0.20Nb)with strain rate1~25s
-1
at 1030~1300 ℃
the effect of temperature on reduction of area of alloy
the change of alloy structure with hot deformation and effect of strain rate on dynamic recrys- tallization temperature of alloy have been studied by Thermomacmaster-Z thermal simulation machine test and microstructure observation. Results showed that the G3 alloy had large resistance of deformation and narrow hot deformation temperature range
and with increasing strain rate
the hot ductility decreased such as for φ10 mm×140 mm sample the tensile strain rate was 100 mm/s
the available temperature for deformation was1130~1260 ℃ but as the tensile strain rate was 200 mm/s the available temperature for deformation was 1130~1