A kind of preparation method of large-scale titanium-aluminum alloy plate material
A titanium-aluminum alloy, large-size technology, which is applied in the field of preparation of large-size titanium-aluminum alloy plates, can solve the problems of difficult preparation of large-size plates, and achieve the effect of solving difficult deformation and low cost
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Embodiment 1
[0037] The preparation method of large-size titanium-aluminum alloy plate, the schematic diagram of its process flow is as follows figure 1 As shown, it specifically includes the following steps:
[0038] Step 1, according to the ratio of titanium-aluminum alloy, weigh zero-grade sponge titanium, Al-Nb master alloy and Al-Cr master alloy, and then weigh a high-purity Al block whose mass is 104wt% times the theoretical amount; first weigh Take zero-grade sponge titanium, Al-Nb master alloy and Al-Cr master alloy into the high-purity graphite crucible, and then add high-purity Al blocks into the high-purity graphite crucible;
[0039] Using intermediate frequency vacuum induction furnace, the vacuum degree is 0.8*10 -1 Pa, under the condition of temperature 1620°C, smelt to obtain titanium-aluminum alloy melt. Among them, the atomic percentage of the composition of titanium aluminum alloy is: Al: 46%, Cr: 1.8%, Nb: 1.8%, the balance is Ti and unavoidable impurities; the purity...
Embodiment 2
[0053] The preparation method of large-size titanium-aluminum alloy plate, the schematic diagram of its process flow is as follows figure 1 As shown, it specifically includes the following steps:
[0054] Step 1, according to the ratio of titanium-aluminum alloy, weigh zero-grade sponge titanium, Al-Nb master alloy and Al-Cr master alloy, and then weigh a high-purity Al block whose mass is 105wt% times the theoretical amount; Weigh the zero-grade sponge titanium, Al-Nb master alloy and Al-Cr master alloy into the high-purity graphite crucible, and then add the high-purity Al block into the high-purity graphite crucible;
[0055] Using intermediate frequency vacuum induction furnace, the vacuum degree is 1.0*10 -1 Pa, under the condition of temperature 1630°C, smelt to obtain titanium-aluminum alloy melt. Among them, the atomic percentage of the composition of titanium aluminum alloy is: Al: 47%, Cr: 2.0%, Nb: 2.0%, the balance is Ti and unavoidable impurities; the purity of ...
Embodiment 3
[0069] The preparation method of large-size titanium-aluminum alloy plate, the schematic diagram of its process flow is as follows figure 1 As shown, it specifically includes the following steps:
[0070] Step 1, according to the ratio of titanium-aluminum alloy, weigh zero-grade sponge titanium, Al-Nb master alloy and Al-Cr master alloy, and then weigh a high-purity Al block whose mass is 106wt% times the theoretical amount; Weigh the zero-grade sponge titanium, Al-Nb master alloy and Al-Cr master alloy into the high-purity graphite crucible, and then add the high-purity Al block into the high-purity graphite crucible;
[0071] Using intermediate frequency vacuum induction furnace, the vacuum degree is 1.1*10 -1 Pa, under the condition of temperature 1650°C, smelt to obtain titanium-aluminum alloy melt. Among them, the atomic percentage of the composition of titanium aluminum alloy is: Al: 48%, Cr: 2.2%, Nb: 2.2%, the balance is Ti and unavoidable impurities; the purity of ...
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