Components made of hardenable and non-hardenable materials
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United States of America Patent
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Sep 28, 1993
Grant Date -
N/A
app pub date -
Oct 21, 1991
filing date -
Oct 21, 1991
priority date (Note) -
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Abstract
A component is provided with a relative undersize in an area to be subjected to increased stress, for instance, through temperature. The component is made of a hardenable steel. The undersize is overlaid with a non-hardenable steel thereby to provide the full size. A second layer on top of the first layer can be provided. When the second layer is metallurgically bonded in a manner that generates heat, it does not cause a heat affected zone in the base hardenable steel. Blades for steam turbines benefit from this procedure.
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