Low-elasticity-modulus and high-strength spinodal decomposition type Zr-Nb-Ti alloy material and preparation method thereof

A low elastic modulus, zr-nb-ti technology, applied in the field of medical zirconium alloys, can solve the problems of low elastic modulus, and achieve the effect of low elastic modulus, good ductility, and high strength

Active Publication Date: 2019-11-05
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem that zirconium alloys in the prior art cannot achieve low elastic modulus and high strength at the same time, the purpose of the present invention is to provide a low elastic modulus, high strength amplitude modulation decomposition type Zr-Nb-Ti alloy material and its preparation method

Method used

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  • Low-elasticity-modulus and high-strength spinodal decomposition type Zr-Nb-Ti alloy material and preparation method thereof
  • Low-elasticity-modulus and high-strength spinodal decomposition type Zr-Nb-Ti alloy material and preparation method thereof
  • Low-elasticity-modulus and high-strength spinodal decomposition type Zr-Nb-Ti alloy material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Weighing: Weigh raw materials: made of 30% Ti, 30% Nb, and Zr in the atomic percentage of elements, and weigh high-purity titanium grains, high-purity niobium grains, and high-purity zirconium grains respectively. The purity of high-purity titanium particles, high-purity niobium particles, and high-purity zirconium particles is not less than 99.99%.

[0046] (2) Melting: put the raw materials weighed in step (1) into a vacuum arc melting furnace for melting, the melting current is 220A, and the melting suspension time is 65s. In order to improve the accuracy and uniformity of the composition, the ingot needs to be smelted six times repeatedly to obtain the ingot.

[0047] (3) Suction casting: putting the ingot obtained in step (2) into a vacuum arc melting furnace for suction casting to obtain a zirconium alloy rod.

[0048] (4) Microstructure control: the suction casting rod obtained in step (3) is subjected to solution treatment, and in the solution treatment ste...

Embodiment 2

[0051] (1) Weigh each component: Weigh the raw material: it is made of 33% Ti, 31% Nb, and the balance is Zr according to the atomic percentage of the elements. Weigh high-purity titanium grains, high-purity niobium grains, and high-purity zirconium grains respectively . The purity of high-purity titanium particles, high-purity niobium particles, and high-purity zirconium particles is not less than 99.99%.

[0052] (2) Melting: put the raw materials weighed in step (1) into a vacuum arc melting furnace for melting, the melting current is 200A, and the melting suspension time is 90s. In order to improve the accuracy and uniformity of the composition, the ingot needs to be smelted six times repeatedly to obtain the ingot.

[0053] (3) Suction casting: putting the ingot obtained in step (2) into a vacuum arc melting furnace for suction casting to obtain a zirconium alloy rod.

[0054] (4) Microstructure control: the suction casting rod obtained in step (3) is subjected to solut...

Embodiment 3

[0057] (1) Weigh each component: Weigh the raw material: it is made of 30% Ti, 30% Nb, and the balance is Zr according to the atomic percentage of the elements. Weigh high-purity titanium grains, high-purity niobium grains, and high-purity zirconium grains respectively . The purity of high-purity titanium particles, high-purity niobium particles, and high-purity zirconium particles is not less than 99.99%.

[0058] (2) Melting: put the raw materials weighed in step (1) into a vacuum arc melting furnace for melting, the melting current is 230A, and the melting suspension time is 85s. In order to improve the accuracy and uniformity of the composition, the ingot needs to be smelted six times repeatedly to obtain the ingot.

[0059] (3) Suction casting: putting the ingot obtained in step (2) into a vacuum arc melting furnace for suction casting to obtain a zirconium alloy rod.

[0060] (4) Microstructure control: the suction casting rod obtained in step (3) is subjected to solut...

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Abstract

The invention discloses a low-elasticity-modulus and high-strength spinodal decomposition type Zr-Nb-Ti alloy material and a preparation method thereof. The Zr-Nb-Ti alloy material comprises the following components in atomic percentage: 20-50% of Ti, 15-45% of Nb and the balance of Zr. The preparation method comprises the following steps: a titanium source, a niobium source and a zirconium sourceare prepared according to designed ratios; zirconium alloy ingots are obtained through multiple times of smelting; zirconium alloy rods are obtained through the zirconium alloy ingots by suction casting; and solid-solution treatment and aging treatment are performed on the zirconium alloy rods in sequence to obtain the Zr-Nb-Ti alloy material. The zirconium alloy material is higher in strength and low in elasticity modulus; the highest strength can reach 1130.8+/-8.5 MPa; and the elasticity modulus is maintained between 40-50 GPa, and is near the elasticity modulus of human bodies.

Description

technical field [0001] The invention belongs to the technical field of medical zirconium alloys, in particular to a low elastic modulus, high-strength amplitude modulation decomposition type Zr-Nb-Ti alloy material and a preparation method thereof. [0002] technical background [0003] In recent years, with the development of society and the improvement of human living standards, people's demand for safe and reliable biological implant materials is increasing. Therefore, a large number of scientific researchers have conducted in-depth research on implantable biological hard tissue materials. To develop alloys for human implants, the alloys are first required to have excellent biocompatibility. Nowadays, the biocompatible alloying elements used in biomedical metal materials mainly include Ti, Zr, Nb, Ta, Mo, Sn, Mg, Zn, etc. Secondly, this type of alloy needs to have high strength and excellent corrosion resistance. On this basis, the alloy also needs to have a lower elasti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C16/00A61L27/04A61L27/06C22C1/02C22C14/00C22F1/18
CPCA61L27/047A61L27/06C22C1/02C22C14/00C22C16/00C22F1/183C22F1/186
Inventor 林建国易琼华张德闯檀朝桂龚伦军马蓦
Owner XIANGTAN UNIV
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