A kind of method that beta-gamma TiAl pre-alloyed powder prepares TiAl alloy plate
A technology of pre-alloyed powder and alloy sheet, which is applied in the field of preparing TiAl alloy sheet, which can solve the problems of macro segregation of TiAl alloy sheet, poor performance of TiAl alloy sheet, uneven chemical composition, etc., and achieve expansion of thermal processing window, powder composition and structure Uniformity, effect of improving hot workability
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specific Embodiment approach 1
[0024] Embodiment 1: This embodiment is a method for preparing TiAl alloy plate from beta-gammaTiAl pre-alloyed powder, which is specifically completed according to the following steps:
[0025] A kind of method that beta-gammaTiAl pre-alloyed powder prepares TiAl alloy sheet material is finished according to the following steps specifically:
[0026] 1. Raw material preparation: Weigh the beta-gammaTiAl pre-prepared beta-gammaTiAl with a nominal chemical composition of Ti-(40-44.5)Al-(0.1-10)X-(0.1-1)Z(at%) with a particle size of 0.5μm~325μm. alloy powder;
[0027] In the Ti-(40~44.5)Al-(0.1~10)X-(0.1~1)Z (at%) described in step 1, X is a beta phase stable element; the described beta phase stable element is Mo, A mixture of one or more of Cr, Nb, V, W, Fe and Mn; the Z is a microalloying element; the microalloying element is one or more of B, C and Y a mixture of species;
[0028] The beta-gammaTiAl prealloyed powder whose nominal chemical composition is Ti-(40~44.5)Al-(0...
specific Embodiment approach 2
[0044] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is: In step 1, the nominal chemical composition with a particle size of 0.5 μm to 325 μm is Ti-(41~44)Al-(2~9)X- (0.1-1) Z (at%) beta-gammaTiAl pre-alloyed powder. Other steps are the same as in the first embodiment.
specific Embodiment approach 3
[0045] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step one, the nominal chemical composition of the particle size of 0.5 μm~325 μm is Ti-(42.5~43.5)Al-(2~ 9) Beta-gammaTiAl pre-alloyed powder of X-(0.2-0.5)Z (at%). Other steps are the same as those in Embodiment 1 or 2.
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