A low-temperature high-strength two-phase titanium alloy
A titanium alloy, high-strength technology, applied in the field of low-temperature high-strength two-phase titanium alloy, can solve the problems of high cold work hardening rate, low plasticity, alloy low-temperature performance sensitive to oxygen content, etc., and achieve excellent strong-plastic matching effect
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Embodiment 1
[0022] The nominal composition of the titanium alloy in this embodiment is Ti-1.5Al-5Nb-1.2Mo, that is, Al1.5%, Nb5%, Mo1.2% by weight percentage, and the balance is titanium and unavoidable impurities.
[0023] The preparation method of the titanium alloy in this example is as follows: batching according to the nominal composition Ti-1.5Al-5Nb-1.2Mo, the raw materials are Al-60Mo master alloy, 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 forging is carried out on the free forging equipment at 1100°C, and then repeated upsetting and drawing forging is carried out at the temperature of 900°C and the deformation amount of each pass is 60%. Finally, multiple passes of hot rolling were carried out at a...
Embodiment 2
[0026] The nominal composition of the titanium alloy in this embodiment is Ti-1.5Al-4.5Nb-3Mo, that is, Al1.5%, Nb4.5%, Mo3% by weight percentage, and the balance is titanium and unavoidable impurities.
[0027] The preparation method of the titanium alloy in this example is as follows: batching according to the nominal composition Ti-1.5Al-4.5Nb-3Mo, the raw materials are Al-55Mo master alloy, 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, it is forged on a free forging equipment at 1080°C, and then repeatedly upsetting and drawing forging is carried out at a temperature of 9298K and a deformation of 55%. The temperature is 840°C, and the multi-pass hot rolling is carried out under the condition that the pass ...
Embodiment 3
[0030] The nominal composition of the titanium alloy in this embodiment is Ti-2.5Al-5.5Nb-1.7Mo, that is, Al2.5%, Nb5.5%, Mo1.7% by weight percentage, and the balance is titanium and unavoidable impurities .
[0031]The preparation method of the titanium alloy in this example is as follows: batching according to the nominal composition Ti-2.5Al-5.5Nb-1.7Mo, raw materials are Al-60Mo master alloy, Ti-46Nb 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, it is forged on a free forging equipment at 1100°C, and then repeatedly upsetting and drawing forging is carried out at a temperature of 880°C and a deformation amount of 50%. Under the conditions of a temperature of 860°C and a pass deformation of 60%, hot rolling was ca...
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