A low-temperature high-strength fatigue-resistant titanium-aluminum-niobium alloy
A fatigue-resistant, titanium-aluminum-niobium technology, applied in the field of titanium alloy materials, can solve the problems of poor low-temperature performance, lower elastic modulus, and low room temperature plasticity, achieve low-temperature strong plasticity and excellent fatigue performance, improve low-temperature plasticity, and sensitive Sexually low effect
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Embodiment 1
[0025] The nominal composition of the titanium-aluminum-niobium alloy in this embodiment is Ti-2.5Al-15Nb, that is, 2.5% by weight of Al, 15% of Nb, and the balance is titanium and unavoidable impurities.
[0026] The preparation method of the titanium-aluminum-niobium alloy in this embodiment is as follows: the ingredients are proportioned according to the nominal composition Ti-2.5Al-15Nb, and the raw materials are Ti-50Nb master alloy, aluminum beans and zero-grade sponge titanium. After the raw materials are mixed evenly, the electrodes are pressed, and the alloy ingots are obtained by smelting three times in a vacuum consumable electric arc furnace. After the alloy ingot is peeled off and the riser and tail end are cut off, the billet is opened and drawn twice at 1200°C on the free forging equipment, and the deformation of the fire is 65%, and finally it is carried out at 950°C on the free forging equipment Two fires and one drawing and forging, the deformation of the two...
Embodiment 2
[0029] The nominal composition of the titanium-aluminum-niobium alloy in this embodiment is Ti-2Al-16Nb, that is, by weight percentage, it is Al2%, Nb16%, and the balance is titanium and unavoidable impurities.
[0030] The preparation method of the titanium-aluminum-niobium alloy in this embodiment is as follows: the ingredients are proportioned according to the nominal composition Ti-2Al-16Nb, and the raw materials are Ti-50Nb master alloy, aluminum beans and zero-grade sponge titanium. After the raw materials are mixed evenly, the electrodes are pressed, and the alloy ingots are obtained by smelting three times in a vacuum consumable electric arc furnace. After the alloy ingot is peeled off and the riser and tail end are cut off, the billet is opened and drawn twice at 1250°C on the free forging equipment, and the deformation of the fire is 60%, and finally it is carried out at 980°C on the free forging equipment. Two fires and one drawing and forging, the deformation of th...
Embodiment 3
[0033] The nominal composition of the titanium-aluminum-niobium alloy in this embodiment is Ti-3Al-14Nb, that is, Al3% by weight percentage, Nb14%, and the balance is titanium and unavoidable impurities.
[0034] The preparation method of the titanium-aluminum-niobium alloy in this embodiment is as follows: the ingredients are proportioned according to the nominal composition Ti-3Al-14Nb, and the raw materials are Ti-50Nb master alloy, aluminum beans and zero-grade sponge titanium. After the raw materials are mixed evenly, the electrodes are pressed, and the alloy ingots are obtained by smelting three times in a vacuum consumable electric arc furnace. After the alloy ingot is peeled off and the riser and tail end are cut off, the billet is opened and drawn twice at 1150°C on the free forging equipment, and the deformation of the fire is 63%, and finally it is carried out at 900°C on the free forging equipment. Two fires and one drawing and forging, the deformation of the fire ...
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