Converting residual surface stress in internal opening of additively manufactured component
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United States of America Patent
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Feb 13, 2018
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N/A
app pub date -
Aug 18, 2017
filing date -
Aug 18, 2017
priority date (Note) -
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Abstract
Methods include converting a residual surface stress in a component made by a metal powder additive manufacturing process. The component includes a body having an external surface and an internal opening passing at least partially through the body, the internal opening including an unused metal powder from the additive manufacturing process therein. Residual surface stress is converted in at least a portion of a body about the internal opening by applying a pressure in the internal opening using a non-compressible fluid and the unused metal powder. The method is advantageous for use with gamma primed hardened superalloys. An additively manufactured component including the stress-converted internal opening is also disclosed.
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