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公开(公告)号:EP2742162B1
公开(公告)日:2015-10-07
申请号:EP12762523.4
申请日:2012-08-09
CPC分类号: C22F1/183 , C22C14/00 , F01D5/28 , F05D2300/174
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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
CPC分类号: C22F1/183 , C22C14/00 , F01D5/28 , F05D2300/174
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.
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