Heat treatment before hot isostatic compression of the pieces cast superalloy

摘要

The present invention relates to a heat treatment before hot isostatic compression of the pieces cast in the superalloy. / p & & p & according to the treatment of a superalloy article comprising the phases are subjected to a melting incipient has a lower temperature, but close to the temperature of hot isostatic compression is subjected to a heat treatment at a temperature close to but lower the temperature provided for for the hot isostatic compression during a period of time sufficient to increase the temperature of fusion incipient, so that a melting and a trapping of harmful gases will be significantly deeper during the cycle of a hot isostatic compression treatment. / p & & p & the present invention is, for example, be used to manufacture of alloys employees in a gas turbine engine.