Preparation method of high intensity Ti6Al4V diphase reinforced composite material
A technology of reinforcing composite materials and ti6al4v, which is applied in metal processing equipment and other directions, can solve the problems of relatively large performance differences of composite materials, limit the application of materials, and reduce the cost, and achieve the effect of excellent comprehensive mechanical properties of materials and simple process.
Inactive Publication Date: 2013-04-24
YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD
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Problems solved by technology
TiB 2 Ti6Al4V and TiC are the two most common particle reinforcements. Ti6Al4V materials based on these two particle reinforcements have also been widely studied, but the research objects are all single-phase reinforcement materials, and the performance differences of composite materials obtained by different preparation processes are compared. Big
From the reported results, by TiB 2 Or the addition of TiC, the tensile strength and elastic modulus of the material have been greatly improved, but in the high-strength titanium alloy material with a tensile strength greater than 1200MPa at room temperature, the elongation after fracture has dropped to 3%. following, which largely limits the application of the material
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[0021] This application uses powder mixing, sintering and forging methods to prepare Ti 6 al 4 V high-strength dual-phase reinforced composite material, the present invention will be further described below with reference to examples.
[0022] 1. Mix powder
[0023] Get -250 mesh titanium powder 2484g titanium powder, -250 mesh 60# aluminum vanadium alloy powder 276g, -250 mesh titanium carbide powder 90g, -250 mesh titanium diboride powder 150g, put into the mixer and carry out mechanical mixing for 1.5 hours, Obtain uniform Ti6Al4V / (3wt%TiC+5wt%TiB 2 ) Composite material mixed powder.
[0024] 2. Suppression
[0025] Put the mixed powder into a mold, hold the pressure for 15 minutes under a pressure of 300MPa on a mechanical press, and press the material into a round rod of Φ80×150mm. At this time, the density of the pressed material is 3.75g / cm 3 , 83.5% of the theoretical density.
[0026] 3. Sintering
[0027] Put the pressed bar bad body into the vacuum sintering...
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Abstract
The invention discloses a method for preparing a titanium-base high-strength composite material with two-phase of TiC and TiB as the particulate reinforcements, and Ti6A14V as the matrix. The method includes the following steps: titanium powder, aluminum-vanadium alloy powder, titanium diboride powder and titanium carbide powder are adopted as the raw materials, mixed in a certain proportion, dwelled by the mechanical pressure or the pressure at the fine pressure of 280-300MPa, pressed into a certain shape, sintered at the temperature of 1200 DEG C and reacted; then the sintered material is forged in different forging manners according to the purpose of the material and the condition of the product to be prepared; finally, the high-strength Ti6A14V two-phase reinforcement composite material can be obtained after heat treatment. The two-phase reinforcement composite material prepared by the method allows the tensile strength to be larger than 1200Mpa at the normal temperature and the percentage elongation after fracture to be above 4%, so as to be widely applied to titanium alloy parts on space air vehicles, seafaring ships, motorcars or sports equipment.
Description
technical field [0001] The invention relates to a preparation method of a titanium alloy composite material, in particular to Ti6Al4V as a matrix with TiC, TiB 2 A method for preparing a dual-phase reinforced composite material that is a particle reinforced phase. Background technique [0002] The content of titanium in the earth's crust is second only to magnesium (Mg), iron (Fe), and aluminum (Al), ranking fourth among metal elements. Titanium alloy material has become a material that has attracted people's attention due to its light weight, high specific strength, good medium and low temperature performance, and corrosion resistance. It has been widely used in aviation, aerospace and other civilian fields, such as automobiles, Sports equipment, etc. Ti6Al4V has become the most widely used titanium alloy material among many titanium alloy grades due to its excellent mechanical properties, and the composite material based on Ti6Al4V has also become the focus of much atten...
Claims
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IPC IPC(8): B23P17/00B22F3/16B21J5/00C21D8/06
Inventor 郭小芳郭健陈党明
Owner YANCHENG XINYANG ELECTROTHERMAL MATERIAL CO LTD