Fine-grain high-strength TiAl alloy including nano Y2O3 and preparation method thereof
A Y2O3 and nanotechnology, applied in the field of alloy material preparation, can solve the problems of large size difference and uneven distribution of Y-rich phase, etc., and achieve the effect of fine grain, good comprehensive mechanical properties and high temperature deformation ability, and reasonable design
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Embodiment 1
[0042] Ti-45Al-3Mo-2V-0.2Y 2 o 3 The preparation method of fine-grained high-strength alloy is as follows:
[0043] (1) Weighing raw materials: 45% Al, 3% Mo, 2% V, 0.2% Y according to the atomic percentage of each element 2 o 3 , the balance being Ti and unavoidable impurities. Sponge titanium, pure aluminum, aluminum molybdenum alloy (Mo content is 52.21%), aluminum vanadium alloy (V content is 53.25%), nano Y 2 o 3 Powder (purity 99.99, particle size 100nm, such as figure 1 Shown) a total of 10000g as raw material.
[0044] (2) Melting ingots: Sponge titanium, high-purity aluminum, aluminum-molybdenum alloys, aluminum-vanadium alloys and nano-Y 2 o 3 The powder is added to the water-cooled copper crucible induction shell melting furnace for melting, and then poured into the ZrO preheated at 600 °C 2 In the ceramic mold, a rectangular ingot is obtained.
[0045] (3), billet pretreatment:
[0046] a. Remove the riser from the TiAl alloy ingot and perform hot isosta...
Embodiment 2
[0061] Ti-43Al-4Mo-2V-0.3Y 2 o 3 The preparation method of fine-grained high-strength TiAl alloy is as follows:
[0062] (1) Weighing raw materials: 43% Al, 4% Mo, 2% V, 0.3% Y according to the atomic percentage of each element 2 o 3 , the balance being Ti and unavoidable impurities. Sponge titanium, pure aluminum, aluminum molybdenum alloy (Mo content is 52.21%), aluminum vanadium alloy (V content is 53.25%), nano Y 2 o 3 Powder (purity 99.99, particle size 100nm) total 10000g as raw material;
[0063] (2) Melting ingots: Sponge titanium, high-purity aluminum, aluminum-molybdenum alloys, aluminum-vanadium alloys and nano-Y 2 o 3 The powder is added to the water-cooled copper crucible induction shell melting furnace for melting, and then poured into the ZrO preheated at 500 °C 2 In the ceramic mold, a rectangular ingot is obtained.
[0064] (3), billet pretreatment:
[0065] a. Remove the riser from the TiAl alloy ingot and perform hot isostatic pressing treatment. T...
Embodiment 3
[0080] Ti-44Al-1Mo-1V-0.1Y 2 o 3 The preparation method of fine-grained high-strength TiAl alloy is as follows:
[0081] (1) Weighing raw materials: 44% Al, 1% Mo, 1% V, 0.1% Y according to the atomic percentage of each element 2 o 3 , the balance being Ti and unavoidable impurities. Sponge titanium, pure aluminum, aluminum molybdenum alloy (Mo content is 52.21%), aluminum vanadium alloy (V content is 53.25%), nano Y 2 o 3 Powder (purity 99.99, particle size 100nm) total 10000g as raw material;
[0082] (2) Melting ingots: Sponge titanium, high-purity aluminum, aluminum-molybdenum alloys, aluminum-vanadium alloys and nano-Y 2 o 3 The powder is added to the water-cooled copper crucible induction shell melting furnace for melting, and then poured into the preheated Al 2 o 3 In the ceramic mold, a rectangular ingot is obtained.
[0083] (3), billet pretreatment:
[0084] a. Remove the riser from the TiAl alloy ingot and perform hot isostatic pressing treatment. The tre...
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