Abstract
Abstract The SSF (semi-solid forging) is compound forging technology to manufacture near net shaped parts. For SSF, it is necessarily required to prepare a workpiece with a globular microstructure. Amongst several processes to obtain a globular microstructure, the SIMA (strain induced melt activated) process is very simple and advantageous with respect to equipment. This paper presents the influence of effective strain on globularization with aluminum 2024 alloy in the stage of cold working by the SIMA process. Upsetting and forward extrusion are tested for the stage of cold working and induction heating for heat treatment is also carried out to obtain a globular microstructure, which is observed with an optical microscope. Finite-element analysis to obtain the effective strain of the workpiece in the stage of cold working is performed with the commercial finite element code, DEFORM.
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