In hot forging process, hot compression tests are used to calculate the flow stress or Forging Simulation software can predict flow stress. I want to calculate the flow stresses of aluminium alloy via phenomenological models. Kindly Guide me.
I think that you need to simulate a compression test of aluminum bar, with the bar at forging temperature, the die at preheating tempertature and if you want, you can use friction factor of 0,2. Then you can make a relation between load / area. Of course you can also do this also experimentally.