Flow Behavior and Constitutive Model Using Piecewise Function of Strain for TC11 Alloy

For TC11 alloy, this paper presented a more accurate constitutive model based on Arrhenius-type hyperbolic sine method by the cubic piecewise function of strain. During this modeling, compression tests of thermal simulation were carried out firstly. The effect of the flow factors on material flow stress was analyzed secondly. On analysis of the test data, the cubic piecewise functions of strain were proposed to ensure the Arrhenius-type hyperbolic sine model of high precision. Comparison with test results shows that the model presented is with high precision and simulation testing proposed show that this model is reliable.