On a Class of Thermo-Visco-Plastic Constitutive Equations for Semi-Solid Alloys
The behavior of semi-solid alloys is quite different in tension, compression and shear and depends strongly on the morphology of the micro-structure. This article outlines a generalized viscoplastic material model for semi-solid alloys which reflects this complex viscoplastic behavior. From the generalized model a number of well known yield functions and viscoplastic material models for semi-solid and solid materials can be reproduces. The general model is applied to describe the behavior of the semi-solid A356 alloy below the coherency temperature during equiaxed solidification.
G. Hirt, A. Rassili, A. Bührig-Polaczek
S. Benke and G. Laschet, "On a Class of Thermo-Visco-Plastic Constitutive Equations for Semi-Solid Alloys", Solid State Phenomena, Vols. 141-143, pp. 653-658, 2008