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Heterogeneous deformation developed during “static recrystallization (SRX) tests” poses serious questions about the validity of the conventional methods to measure softening fraction. The challenges to measure SRX and verify a proposed kinetic model of SRX are discussed and a least square technique is utilized to quantify the error in a proposed SRX kinetic model. This technique relies on an existing...
An axi-symmetric forward spiral extrusion process, AFSE, has been analyzed using the principle of the virtual work rate. Based on an existing kinematically admissible velocity field, an upper bound solution has been developed for the new forming process. The solution also provides estimation of the die reaction torque during the process. AFSE experiments were conducted with lead specimens in order...
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