| 摘要 |
PROBLEM TO BE SOLVED: To provide a method where a gas turbine engine superalloy article is locally heat-treated to improve resistance to strain-induced fatigue of the article. SOLUTION: The method comprises providing a gas turbine engine superalloy article having a gamma prime solvus temperature; and locally over aging only a selected portion of the article to locally improve fatigue resistance at the selected portion of the article, wherein the local over age cycle includes heating at about 843°C for about 3 to 4 hours. COPYRIGHT: (C)2007,JPO&INPIT
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