GESCHMIEDETE TIAL-BAUTEILE UND VERFAHREN ZU IHRER HERSTELLUNG
    2.
    发明公开
    GESCHMIEDETE TIAL-BAUTEILE UND VERFAHREN ZU IHRER HERSTELLUNG 有权
    工艺生产锻造TIAL成分的

    公开(公告)号:EP2742162A1

    公开(公告)日:2014-06-18

    申请号:EP12762523.4

    申请日:2012-08-09

    IPC分类号: C22C14/00 C22F1/18 F01D5/00

    摘要: The invention relates to a method for producing forged components made of a TiAl alloy, in particular turbine blades. The components are forged and undergo a two-stage heat treatment after the forging process. The first stage of the heat treatment comprises a recrystallization annealing process for 50 to 100 minutes at a temperature below the γ/α transition temperature, and the second stage of the heat treatment comprises a stabilization annealing process in the temperature range of between 800 °C to 950 °C for 5 to 7 hrs. The cooling rate during the first heat treatment stage is greater than or equal to 3 °C/sec, in the temperature range between 1300 °C to 900 °C.