heat treatment of MCrAlY coatings
Hello, everyone! MCrAlY coatings have been widely employed for its feasibility to tailoring specific coating compositions. They have to be annealed to improve their performance. What I am puzzled is the choice of annealing temperature. It seems that they are usually annealed at 1020~1080 degrees. However, when it comes to directional solidified or single crystallized superalloys, the temperature is much higher than their aging temperature. What’s the suitable annealing temperature for MCrAlY coatings on these alloys ?Any answers will be appreciated in advance!
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