Methods for joining a monocrystalline part to a polycrystalline part by means of an adapter piece made of polycrystalline material
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United States of America Patent
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Aug 25, 2015
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app pub date -
Aug 6, 2009
filing date -
Aug 21, 2008
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Abstract
The present invention relates to methods for joining a rotationally asymmetrical part, preferably a turbine blade, which is made of a monocrystalline material, to a part, preferably a rotor core, which is made of polycrystalline material, having the method steps of: —joining the rotationally asymmetrical part to an adapter piece made of polycrystalline material by means of rotational friction welding, and —joining the adapter piece to the part made of polycrystalline material. The present invention also relates to a turbine blisk having a rotor core made of polycrystalline material and turbine blades made of monocrystalline material.
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