Comparison study of single direction and friction assisted compaction of multiple alloy powders by finite element simulation
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A comparative study is conducted by compaction experiments and finite element simulations on the compaction behavior of multiple alloy powders in the traditional single direction compaction and in the friction-assisted-compaction processes. The results suggest that, in the single direction compaction, stress, strain, and density of the green compacts along the vertical direction are not uniform due to the effects of the friction between the side die wall and powder particles; the density on the top of the green compacts is higher than that in the bottom. However, in the friction assisted compaction process, the density distribution along the vertical direction is more uniform and the density near the middle part of the green compacts is only slightly lower than that at the top and bottom parts of the green compact.
Keywordsmultiple alloy single direction compaction friction assisted compaction finite element simulation
This work is supported by The National Natural Science Foundation of China (No. 50874083), the Foundation for Distinguished Young Scientists of Hubei Province of China (No. 2009CDA044), and the Foundation of Hu’bei Educational Committee (No. Q20091110).
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