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Low-elasticity high-strength near beta-type Ti-Nb-Ta-Zr alloy and preparation method of near beta-type Ti-Nb-Ta-Zr alloy

A ti-nb-ta-zr and alloy technology, which is applied in the field of low elastic modulus near β-type Ti-Nb-Ta-Zr alloy and its preparation, can solve the problems of high toxicity of added elements and high elastic modulus

Inactive Publication Date: 2011-08-10
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the shortcomings of high toxicity and high elastic modulus of added elements in the current research on medical titanium alloys, the biocompatibility of implant materials can be improved by adding non-toxic elements, adjusting element content and heat treatment process, and reducing the distance between implant materials and bone. The "stress shielding" phenomenon caused by the mismatch of elastic modulus between the two, the purpose of the present invention is to provide a low-elasticity high-strength near-β-type Ti-Nb-Ta with moderate strength, low elastic modulus, good biocompatibility and simple process -Zr alloy and its preparation method

Method used

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  • Low-elasticity high-strength near beta-type Ti-Nb-Ta-Zr alloy and preparation method of near beta-type Ti-Nb-Ta-Zr alloy
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  • Low-elasticity high-strength near beta-type Ti-Nb-Ta-Zr alloy and preparation method of near beta-type Ti-Nb-Ta-Zr alloy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A) Alloy preparation

[0028] Ti-30Nb-5Ta-9Zr alloy, Ti, Nb, Ta, Zr pure metals are proportioned according to the mass percentage of the alloy composition, melted in a non-consumable vacuum electric arc furnace, fully electromagnetically stirred, the melting voltage is 10-34 volts, and the melting current is 50 -300 amps, the electromagnetic stirring current is 6-12 amps, and the number of melting times is 3-5 times. Button-shaped ingots are obtained after smelting many times.

[0029] B) hot forging

[0030] After the ingot is hot forged, it is forged into a plate with a thickness of 3mm, a length of 70mm, and a width of 30mm, and is cut into a tensile sample by wire.

[0031] C) heat treatment

[0032] The tensile sample was subjected to solution treatment in a box-type resistance furnace, the solution temperature was 750°C, the solution time was 0.5h, and water quenching was carried out after solution.

[0033] D) Material properties

[0034] Elastic modulus (GP...

Embodiment 2

[0036] A) Alloy preparation

[0037] Ti-30Nb-5Ta-12Zr alloy, Ti, Nb, Ta, Zr pure metals are proportioned according to the mass percentage of the alloy composition, melted in a non-consumable vacuum electric arc furnace, fully electromagnetically stirred, the melting voltage is 10-34 volts, and the melting current is 150 -350 amps, the electromagnetic stirring current is 10-15 amps, and the number of melting times is 3-5 times. Button-shaped ingots are obtained after smelting many times.

[0038] B) hot forging

[0039] After the ingot is hot forged, it is forged into a plate with a thickness of 3mm, a length of 70mm, and a width of 30mm, and is cut into a tensile sample by wire.

[0040] C) heat treatment

[0041] The tensile sample was subjected to solution treatment in a box-type resistance furnace, the solution temperature was 800 ° C, the solution time was 1 h, and water quenching was carried out after solution.

[0042] D) Material properties

[0043]Elastic modulus ...

Embodiment 3

[0045] A) Alloy preparation

[0046] Ti-30Nb-5Ta-6Zr alloy, Ti, Nb, Ta, Zr pure metals are proportioned according to the mass percentage of the alloy composition, melted in a non-consumable vacuum electric arc furnace, fully electromagnetically stirred, the melting voltage is 10-34 volts, and the melting current is 100 -300 amps, the electromagnetic stirring current is 8-14 amps, and the number of melting times is 3-5 times. Button-shaped ingots are obtained after smelting many times.

[0047] B) hot forging

[0048] After the ingot is hot forged, it is forged into a plate with a thickness of 3mm, a length of 70mm, and a width of 30mm, and is cut into a tensile sample by wire.

[0049] C) heat treatment

[0050] The tensile sample was subjected to solution treatment in a box-type resistance furnace, the solution temperature was 750°C, the solution time was 0.5h, and water quenching was carried out after solution. The artificial aging temperature is 500°C, the aging time is...

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Abstract

The invention discloses a low-elasticity high-strength modulus near beta-type Ti-Nb-Ta-Zr alloy. The near beta-type Ti-Nb-Ta-Zr alloy consists of the following components in percentage by weight: 28 to 32 percent of niobium, 4 to 5.5 percent of tantalum, 5 to 15 percent of zirconium and the balance of titanium. A preparation method comprises the following steps of: proportioning the components according to the proportion, and smelting the components into a button-shaped Ti-Nb-Ta-Zr cast ingot through a vacuum non-consumable arc furnace; thermally forging the button-shaped Ti-Nb-Ta-Zr cast ingot into a thin plate with size of 3mm*30mm*70mm; performing solution treatment on a linearly cut sample at the temperature of between 750 and 800 DEG C, and performing water quenching to obtain single-phase beta tissues; and performing ageing treatment on the solution treatment sample at the temperature of between 450 and 500 DEG C, and performing air cooling to obtain two-phase tissues of beta phase and dispersed alpha phase. The alloy can be widely applied to human hard tissue repair, replacement of medicinal materials and other medicinal devices.

Description

technical field [0001] The invention relates to a low elastic modulus near β-type Ti-Nb-Ta-Zr alloy and a preparation method thereof, belonging to the field of medical materials used for replacement and repair of human hard tissues. Background technique [0002] Titanium alloys have been widely used in orthopedics, maxillofacial surgery, and cardiovascular because of their high strength, low elastic modulus, good biocompatibility, and excellent corrosion resistance. At present, the most widely used titanium alloy clinically is Ti-6Al-4V, but this alloy contains two elements V and Al. Al element can cause symptoms such as osteomalacia, anemia and nervous disorder, and V is also considered to be toxic to organisms. element, the toxicity exceeds that of Ni and Cr. In order to avoid the potential toxicity of V, two new α+β alloys Ti-5Al-2.5Fe and Ti-6Al-7Nb were developed in the mid-1980s. The mechanical properties of these alloys are similar to those of Ti-6Al-4V. However, th...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03C22F1/18
Inventor 陈锋余新泉张友法楚扬
Owner SOUTHEAST UNIV
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