428 FSWを利用したポーラスアルミニウム作製方法の検討(溶接・接合のプロセスと評価(1),ものづくりにおける基礎研究と先端技術の融合)

概要

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Recently, porous aluminum has attracted special interest as a new functional material. However, the application of porous aluminum remains limited due to high-cost fabrication and low productivity. To overcome these problems, the authors proposed a new fabrication method by using friction stir processing (i. e. FSP route precursor method). In this study, at first, the precursors of ADC12 and A1050 are fabricated by FSP route individually and those precursors are welded by friction stir welding (FSW). Moreover, by foaming the welded precursor, ADC12-A1050 porous aluminum is manufactured. Based on the cross-sectional images of the porous aluminum, porosity and pore structures are examined. Although ADC12-A1050 bonded precursor begins to foam from the part of ADC12, ADC12-A1050 porous aluminum with high porosity and high circularity can be manufactured under proper forming conditions.
2010-11-27