A preparation method of ta7eli titanium alloy plate for ultra-low temperature
A titanium alloy, ultra-low temperature technology, applied in metal rolling and other directions, to achieve the effect of improving ultra-low temperature deformation performance, high degree of strong plastic matching, and improving ultra-low temperature deformation performance
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Embodiment 1
[0020] This embodiment includes the following steps:
[0021] Step 1. Insulate the TA7ELI titanium alloy slab prepared by explosive compounding at a temperature of 30°C above the phase transition point of the TA7ELI titanium alloy for 3.5h, and then at a temperature of 50°C below the phase transition point of the TA7ELI titanium alloy for 0.5h. Complete the first heat treatment; the thickness of the TA7ELI titanium alloy slab is 150mm, the width is 1200mm, and the length is 1500mm;
[0022] Step 2. Carrying out the first heat rolling to the TA7ELI titanium alloy slab after the first heat treatment in step 1 to obtain the first semi-finished slab; the first fire rolling is unidirectional rolling, and the second fire rolling is There are 10 passes for one-fire rolling, and the deformation rates of each pass are: 6.7%, 9.3%, 12.6%, 12.6%, 13.4%, 11.9%, 12.2%, 10.8%, 8.6%, 5.7% , the total deformation rate of the first firing rolling is 67%, the finish rolling temperature is 800°...
Embodiment 2
[0029] This embodiment includes the following steps:
[0030] Step 1. Insulate the TA7ELI titanium alloy slab prepared by explosive compounding at a temperature of 50°C above the phase transition point of the TA7ELI titanium alloy for 4h, and then at a temperature of 30°C below the phase transition point of the TA7ELI titanium alloy for 0.8h to complete The first heat treatment; the thickness of the TA7ELI titanium alloy slab is 170mm, the width is 1000mm, and the length is 1300mm;
[0031] Step 2. Carrying out the first heat rolling to the TA7ELI titanium alloy slab after the first heat treatment in step 1 to obtain the first semi-finished slab; the first fire rolling is unidirectional rolling, and the second fire rolling is There are 11 passes in one fire rolling, and the deformation rates of each pass are: 5%, 6%, 13%, 11%, 9%, 8%, 8%, 8%, 7%, 6%. , 5%, the total deformation rate of the first fire rolling is 60%, the finish rolling temperature is 830 ℃, and the rolling speed...
Embodiment 3
[0038] This embodiment includes the following steps:
[0039] Step 1. Insulate the TA7ELI titanium alloy slab prepared by explosive compounding at a temperature of 80°C above the phase transition point of the TA7ELI titanium alloy for 4.5h, and then at a temperature of 10°C below the phase transition point of the TA7ELI titanium alloy for 1h to complete The first heat treatment; the thickness of the TA7ELI titanium alloy slab is 220mm, the width is 800mm, and the length is 1200mm;
[0040] Step 2. Carrying out the first heat rolling to the TA7ELI titanium alloy slab after the first heat treatment in step 1 to obtain the first semi-finished slab; the first fire rolling is unidirectional rolling, and the second fire rolling is There are 11 passes in one fire rolling, and the deformation rates of each pass are: 7%, 10%, 15%, 11%, 11%, 10%, 7%, 7%, 7%, 6% , 6%, the total deformation rate of the first fire rolling is 64%, the finish rolling temperature is 830 ℃, and the rolling sp...
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