This paper numerically and experimentally describes the influence of cold rotary swaging on a pre-sintered tungsten alloy. The finite element method was applied to describe infeed swaging of 30 mm diameter circular bar with 30% reduction of cross-sectional area. The numerically studied results were distribution of strain, distribution of temperature, effective strain rate and material flow during a single pass. To validate the predicted results, experimental swaging of pre-sintered W-Ni-Co tungsten alloy was realized. The results of strain distribution were compared with results from microstructure analysis and distribution of microhardness along the cross section of the swaged sample. Results of mechanical testing showed higher microhardness in regions near the swaged surface. This fact corresponds to the distribution of strain predicted by numerical modelingKeywords: Numerical modeling, cold swaging, tungsten alloy
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