Large plastic deformation method for achieving titanium alloy low-temperature superplasticity

A technology of severe plastic deformation and superplasticity, applied in the direction of metal extrusion dies, etc., can solve problems such as wasting time, and achieve the effects of broadening the application field, reducing labor intensity, and widening the extrusion deformation of channel bends

Inactive Publication Date: 2014-03-12
SHANDONG JIANZHU UNIV
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Problems solved by technology

The traditional equal-channel bending process is a more effective method of severe plastic deformation for grain refinement. It can achieve material grain refinement through multi-pass extrusion, but manual operations are required between different passes, which wastes time. If it is designed as a continuous channel, one extrusion can achieve double the effect of the traditional process, which not only improves the work efficiency, improves the plasticity of the material, but also reduces the production cost of the material

Method used

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  • Large plastic deformation method for achieving titanium alloy low-temperature superplasticity
  • Large plastic deformation method for achieving titanium alloy low-temperature superplasticity

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Embodiment Construction

[0016] From figure 1 Shown mold assembly drawing of the present invention, figure 2 As can be seen from the details of extrusion channel design skills in the prestressed combined die structure, the present invention mainly includes 1. Lower formwork 2. Guide pillar 3. Hexagon socket head screw 4. Guide sleeve 5. Upper formwork 6. Convex die fixing plate 7 .Positioning cylindrical pin 8 punch backing plate 9. Hexagon socket screw 10. Punch 11. Die plate 12. Second layer of die pressing sleeve 13. First layer of die pressing sleeve 14. Die die 15. Die die pad, etc. composition. In the extrusion process, the materials used in the extrusion experiment are first cut by wire cutting, and then processed into a sample with a diameter of 12mm and a length of 40mm by cutting. A continuous equal-channel angle extrusion die. After preheating the extrusion part and the mold, the extrusion starts due to the limited length of the punch. When the extrusion part completely enters the chan...

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Abstract

The invention discloses a novel device capable of achieving titanium alloy low-temperature superplasticity according to a large plastic deformation method. The novel device is characterized in that performance of titanium alloy is improved through large plastic deformation, low-temperature superplasticity is achieved, the material utilization ratio is improved, production cost of the titanium alloy is reduced, and the application field of the titanium alloy is widened. The novel large plastic deformation device is an improved traditional equal channel angular extrusion process die capable of achieving continuous sample squeezing, improves experiment working efficiency and relieves labor operation intensity as well.

Description

technical field [0001] The invention relates to the field of severe plastic deformation, in particular to a new device capable of realizing the severe plastic deformation method of low-temperature superplasticity of titanium alloy. Background technique [0002] Titanium alloys have excellent properties, abundant reserves, high specific strength and good corrosion resistance. Many countries in the world have recognized the importance of titanium alloy materials, researched and developed them, and obtained practical applications. At present, titanium and titanium alloys are widely used in aviation, aerospace, ships, weapons, nuclear energy and other fields. The aerospace industry is its main consumption area, but the cutting performance of titanium alloy is very poor, especially when it is made into complex parts like aircraft structural parts, the yield is very low, which leads to high processing and production costs of titanium alloy products, Moreover, in the field of aero...

Claims

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Application Information

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IPC IPC(8): B23P17/00B21C23/00B21C25/02
CPCB23P17/04
Inventor 徐淑波刘婷景财年林晓娟王桂青
Owner SHANDONG JIANZHU UNIV
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