Design of Hierarchical Cellular Metals Using Accumulative Bundle Extrusion
This letter introduces a method for designing hierarchical cellular metals employing multipass accumulative bundle extrusion and selective dissolving. The method provides several degrees of freedom for manipulating both the cell-wall properties and architecture of cellular materials. Cellular copper was produced and analyzed as an example of implementing the proposed method. The material hierarchy that can be formed and controlled by means of multipass accumulative extrusion assures strength and enables the material to perform the prescribed functions.
KeywordsRelative Density Functional Grade Cellular Material Selective Removal High Specific Strength
The authors are grateful to Dr. Maxim Yutkin and Dr. Sergey Sapchenko for discussions at the early stages of the current study. The current study was supported by a grant from the Fundamental R&D Program for Core Technology of Materials (10037206) funded by the Ministry of Knowledge Economy, Korea.
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