Modelling of Cyclic Plasticity and Viscoplasticity of Directionally Solified DZ125 Superalloy: Part I: Estimating the Parameters of Chaboche Constitutive Equations

Jie Qiong Li; Li Jun Wang

doi:10.4028/www.scientific.net/AMR.295-297.854

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Modelling of Cyclic Plasticity and Viscoplasticity of Directionally Solified DZ125 Superalloy: Part I: Estimating the Parameters of Chaboche Constitutive Equations

Abstract:

Cyclic plasticity and viscoplasticity of directionally solified superalloy, DZ125, have been described using the Chaboche uniﬁed constitutive model. A set of initial material parameters has been determined utilizing the monotonic, cyclic, relaxation and creep test data of DZ125 at 980°C, while an optimum set of material parameters has been obtained by means of least-square procedure.