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Metastable beta titanium alloy with low elastic modulus and preparing method thereof

A low elastic modulus, β titanium alloy technology, applied in the field of low elastic modulus metastable β titanium alloy and its preparation, titanium alloy materials and preparation, can solve the problems of simplification of use, containing toxic elements, etc., to achieve optimal performance, Effect of strength and elastic modulus optimization

Active Publication Date: 2014-04-23
BAOJI TITANIUM IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the shortcomings of existing titanium alloys, especially biomedical titanium alloys, which have high elastic modulus, contain toxic elements, and have single uses, the present invention provides an elastic modulus closer to the elastic modulus of human bones, which does not contain toxic elements Low elastic modulus metastable β titanium alloy and preparation method thereof

Method used

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  • Metastable beta titanium alloy with low elastic modulus and preparing method thereof
  • Metastable beta titanium alloy with low elastic modulus and preparing method thereof
  • Metastable beta titanium alloy with low elastic modulus and preparing method thereof

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Embodiment 1

[0038] 1. Ingredients: According to the composition of Ti-19wt%Nb-1wt%Mo-4wt%Zr-7wt%Sn-0.2wt%O alloy, prepare zero-grade sponge Ti and TiO respectively 2 , Ti-52Nb master alloy, Ti-32Mo master alloy, and Ti-80Sn master alloy are mixed evenly; the purity of the sponge Zr is ≥99.9%.

[0039] 2. Smelting: Press the prepared raw materials into electrodes on a hydraulic press, and smelt three times in a vacuum consumable electric arc furnace. During smelting, control the vacuum in the furnace to ≤10-2Pa, and the furnace temperature is 1600°C. The smelting time is 30 minutes; the alloy ingot is obtained. After sufficient cooling, samples were taken for differential thermal analysis and metallographic analysis, and the β→α phase transition temperature of the alloy was measured, and chemical methods were used to analyze whether there was composition segregation in the ingot. Then perform homogenization annealing (with Ar gas protection) in a vacuum furnace, the homogenization tempera...

Embodiment 2

[0049] 1. Ingredients: According to the composition of Ti-19wt%Nb-1.5wt%Mo-4wt%Zr-8wt%Sn-0.3wt%O alloy, prepare zero-grade sponge Ti and TiO respectively 2 , Ti-52Nb master alloy, Ti-32Mo master alloy, and Ti-80Sn master alloy are mixed evenly; the purity of the sponge Zr is ≥99.9%.

[0050] 2. Smelting: Press the prepared raw materials into electrodes on a hydraulic press, and carry out 3 times of smelting in a vacuum consumable electric arc furnace. During smelting, control the vacuum degree in the furnace to ≤10 -2 Pa, the temperature in the furnace is 1700°C, and the melting time is 45 minutes each time; an alloy ingot is obtained. After sufficient cooling, samples were taken for differential thermal analysis (see figure 2 ) and metallographic analysis, from figure 2 It can be seen that the β→α phase transition temperature of the alloy is about 750 °C, and the chemical method is used to analyze whether there is composition segregation in the ingot. Then perform homoge...

Embodiment 3

[0060] 1. Ingredients: According to the composition of Ti-18wt%Nb-1.5wt%Mo-4wt%Zr-7wt%Sn-0.2wt%O alloy, prepare zero-grade sponge Ti and TiO respectively 2 , Ti-52Nb master alloy, Ti-32Mo master alloy, and Ti-80Sn master alloy are mixed evenly; the purity of the sponge Zr is ≥99.9%.

[0061] 2. Smelting: Press the prepared raw materials into electrodes on a hydraulic press, and carry out smelting twice in a vacuum consumable electric arc furnace. During smelting, control the vacuum degree in the furnace to ≤10 -2 Pa, the temperature in the furnace is 1650°C, and the melting time is 60 minutes each time; an alloy ingot is obtained. After sufficient cooling, samples were taken for differential thermal analysis and metallographic analysis, and the β→α phase transition temperature of the alloy was measured, and chemical methods were used to analyze whether there was composition segregation in the ingot. Then perform homogenization annealing (with Ar gas protection) in a vacuum fu...

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Abstract

The invention relates to a titanium alloy material, in particular to a multi-functional biomedical metastable beta titanium alloy material with excellent processing performance, and belongs to the technical field of titanium alloy material preparation. The alloy contains the following ingredients by mass: 18-27% of Nb, 0.5-2% of Mo, 3-5% of Zr, 7-9% of Sn, 0.1-0.3% of O and the balance of Ti. The titanium alloy has excellent comprehensive performance, and the strength and the elastic modulus of the alloy can be regulated through different thermal treatments. The elastic modulus E of the alloy is 40-7 3GPa, the yield strength sigma 0.2 is 260-864 MPa, the tensile strength sigma b is 686-1094 MPa, the elongation rate epsilon = 4-20%, and the facture surface shrinkage rate is 20-52%. The titanium alloy does not contain toxic elements, such as Al and V, and has excellent corrosion resistance, biocompatibility and cold processing performance. The titanium alloy can be used for manufacturing tissue repairing or substituting materials, such as artificial bones, artificial joints and bone plates.

Description

technical field [0001] The invention relates to a titanium alloy material and a preparation method, in particular to a metastable beta titanium alloy with a low elastic modulus and a preparation method; it belongs to the technical field of titanium alloy material preparation. Background technique [0002] Compared with traditional medical metal materials such as stainless steel and cobalt-chromium-molybdenum alloys, titanium and titanium alloys have gradually become the most important medical materials for orthopedics, implants, and oral restorations due to their good comprehensive mechanical properties, corrosion resistance, and excellent biocompatibility. material of choice in the field. [0003] The development of biomedical titanium and titanium alloys can be divided into three eras. The first era is represented by pure titanium (α type) and Ti-6A1-4V (α+β type). In the 1950s, people began to use pure titanium to manufacture bone plates and screws, which were used clini...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22F1/18
Inventor 刘会群高颀易丹青王鼎春尹胜利杨奇石为民
Owner BAOJI TITANIUM IND
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