Test gear steel Cr14-Co13-Mo5-Ni2 is melted by 5 t VIM + 1 t VAR double-vacuum melting process. The effect of deformation temperature (1040-1080 ℃ )
amount of deformation (20%-60% ) and deformation rate (1-20 s
-1
) on grain distribution and grain size of Cr14-Co13-Mo5-Ni2 steel has been tested and studied by using Gleeble-1500 thermal simulation machine. Results show that with deformation temperature 1040 °C