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Method for preparing high-performance Ti6Al4V alloy plate

A high-performance alloy plate technology, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of material component performance degradation, cracks, etc., and achieve the effect of improving mechanical properties and increasing service life

Active Publication Date: 2017-09-22
CENT SOUTH UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

In the process of low cooling and large plastic deformation, cracks are prone to occur, thereby degrading the performance of material components

Method used

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  • Method for preparing high-performance Ti6Al4V alloy plate
  • Method for preparing high-performance Ti6Al4V alloy plate

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Embodiment Construction

[0014] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0015] Such as figure 1 Shown, a kind of method for preparing high performance Ti6Al4V alloy plate, the steps are as follows:

[0016] Step 1: use Ti6Al4V hot-rolled plate 1 as raw material, and the thickness of the plate is 1.5mm-3.5mm.

[0017] Step 2: put the material into the cryogenic box 2 for cooling, lower the temperature of the rolled piece to -190°C, and keep it warm for 10 minutes.

[0018] The third step: take out the material and carry out cold rolling. The rolling speed of the upper roll 3 and the lower roll 4 are V1 and V2 respectively, and the speed ratio V1 of the upper and lower rolls is strictly controlled: V2=1.1~1.2. According to the low-temperature performance characteristics of Ti6Al4V, the rolling reduction rate of each pass is strictly controlled at 5%-10%.

[0019] Repeat the second and third steps until the total r...

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Abstract

The invention discloses a method for preparing a high-performance Ti6Al4V alloy plate. The method comprises the following steps that 1) a Ti6Al4V hot rolled plate is taken as a raw material, wherein the thickness of the hot rolled plate is 1.5mm-3.5mm; 2) the hot rolled plate is put into a cryogenic tank for cooling, the temperature of the rolled piece is reduced to 190 DEG C, and heat preservation is carried out for 10 minutes; 3) the rolled piece is taken out for cold rolling, wherein the rolling speed of an upper roller is V1, the rolling speed of a lower roller is V2, the ratio of V1 to V2 is controlled to be 1.1 to 1.2, the rolling is carried out, and the rolling reduction rate is 5%-10%; and 4) the rolling is repeatedly carried out on the rolled piece until the total reduction rate reaches 20%-25%, and the high-performance Ti6Al4V alloy plate is obtained. The method adopts the principle that small-sized grains especially small-sized high-V-phase materials can be formed in the deformation process of titanium alloy under the condition of ultralow temperature, so that the mechanical property of the material is improved; and the Ti6Al4V alloy has wide application prospects in the fields of aerospace, life medical science and the like, and the method can effectively prolong the service life of the material.

Description

technical field [0001] The invention belongs to the technical field of metal plate rolling, in particular to a method for preparing high-performance Ti6Al4V alloy plate. Background technique [0002] Ti6Al4V titanium alloy has very superior high-temperature performance, and it has a very wide range of applications in many fields such as aerospace and biomaterials. With the development of lightweight in the manufacturing field, it is of great scientific significance and engineering application value to improve the mechanical properties of titanium alloy sheets and reduce the thickness of titanium alloy sheets under the same load requirements. [0003] For titanium alloy materials, it has a HCP structure. In the process of low-cooling and large plastic deformation, cracks are prone to occur, thereby degrading the performance of material components. Contents of the invention [0004] In order to overcome the above-mentioned shortcomings of the prior art, the object of the p...

Claims

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Application Information

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IPC IPC(8): B21B3/00B21B45/02
CPCB21B3/00B21B45/0203
Inventor 喻海良崔晓辉王青山
Owner CENT SOUTH UNIV
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