Process for manufacturing an article made of an oxide-dispersion-strengthened alloy
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United States of America Patent
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Mar 28, 2000
Grant Date -
N/A
app pub date -
Jun 18, 1998
filing date -
Jun 18, 1997
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Expired
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Abstract
This process makes it possible to manufacture articles of any shape by stamping, in which articles the matrix of the alloy has to have a coarse-grained structure. According to the invention, a partial hot-forming operation is carried out by stamping a blank made of an oxide-dispersion-strengthened alloy, especially a nickel-based alloy, having an initial ultrafine-grained structure, in order to form a shaped component, this shaped component is subjected to a secondary recrystallization heat treatment so as to develop an abnormal grain growth, and then a new hot-forming operation is carried out by stamping in order to give the recrystallized shaped component the final shape of the article.
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