機械材料・材料加工技術講演会講演論文集
Online ISSN : 2424-287X
セッションID: 310
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310 ポーラス金属の圧延特性と塑性構成式の検討
鶴岡 裕之宇都宮 裕松本 良
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Three porous metals, i.e., lotus-type porous copper, aluminum foam, and open-cell type porous nickel, were subjected to multi-pass cold rolling. At the beginning, thickness reduction was mostly converted to volumetric change, while after heavy rolling, elongation in the rolling direction became remarkable. It is found that strain ratio of elongation to thickness, i.e., 'elongation efficiency', increases with decreasing porosity. The trend is sensitive to neither initial porosity nor pore morphology. It can be described with Shima's eq. for sintered metals using modified constants.

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