What do you mean by flow curves? Do you mean typical stress-strain curves as produced during ambient temperature tensile testing? Or do you want data on flow stresses at various temperatures, usually presented as stress-strain "flow curves". These types of flow curves also depend greatly on the strain rate, so that is another variable to consider.
I do not have either of these curves for this alloy. Some places to look would be the following:
Atlas of Stress-Strain Curves from ASM International