Melt-Spinning

The melt-spinning process is characterized by a thin stream of a molten metal that will become in contact with a water cooled copper wheel. This process causes a rapid solidification and producing metal ribbons or flakes. The cooling rates are in the order of 10^4–10^7 Kelvin per second (K/s). The high cooling rates are used to produce metallic glasses or amorphous metals. Unfortunately only the side of the ribbon that comes directly in contact with the wheel is fully amorphous. The ribbons or flakes will be cut and milled into powder. This powder will be afterwards compacted by standard processes like cold or hot pressing, extrusions and others. Because of the fully or partially microstructure the Aluminum alloys show high strength and hardness.

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