| Research focus Bulk Metallic Glasses |
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BULK METALLIC GLASSES |
A new class of engineering material with unique properties: |
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Net-shape forming with permanent molds |
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High strength (2 GPa) in combination with a high elastic limit (2%) and low loss coefficient |
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The glass forming ability and extraordinary
stability of the melts against crystallization results from multi-component eutectic alloys with a negative
enthalpy of mixing. Meanwhile it is possible to produce bulk amorphous metallic parts. At cooling rates down
to 1 K/s it is possible to produce highly technological parts in thicknesses of several centimeters. |
In addition to casting, amorphous feedstock
can be processed by thermoplastic forming. Viscous flow enables a economic way of net-shape forming by embossing
or blow molding at relatively low temperatures (depending on the alloy at about 150 – 400 °C). |
At the Chair of Metallic Material research focuses are: |
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Alloy development and optimization |
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Thermophysical Analysis |
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High temperature – high vacuum – viscosity measurements |
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Processing methods for feedstock production |
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Die casting of bulk metallic glass forming alloys |
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Thermoplastic forming of amorphous metallic feedstock |
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