メルトスピニングAl-Si箔の冷間圧延によるマイクロ加工の検討(<小特集>M&P2009機械材料・材料加工部門技術講演会)

概要

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The micro-forming of melt-spun Al-14 mass%Si was tried by the cold rolling. The nozzle pressing melt sinning method was adopted. The nozzle pressing melt spinning method was useful to improve the wetting pattern on the roll contact surface of the strip. The nozzle-pressing melt spinning process could cast the rapidly solidified foil at the thickness of 0.2mm. This was the thinnest foil which was suitable for the cold rolling. The Al-14 mass%Si was near to the eutectic at the cooling rate of the nozzle pressing melt sinning method. Therefore, the grain was very fine. The eutectic Si around the roll contact surface was about 0.3μm. The as-cast foil was cold rolled by Cr-plate-roll down to 0.1mm in order to improve the surface of the foil. Buffing was operated on the roll contact surface of the strip. V-mold was machined on the Ni plate operated on the roll surface. The depth of the V-groove was 1, 3, 5 and 10μm. The rolling speed of the mold roll was 1m/min. The micro bulge was mold on the roll contact surface of the foil. The height of the micro-bulge was about 0.2μm lower than the depth of the V-groove. The rolling direction was formed better than the lateral direction. It became clear that crystal alloy could be micro-formed by the cold rolling.
2010-06-25