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Super-elasticity low-elastic-modulus titanium alloy material and preparation method and application thereof

A low elastic modulus, alloy material technology, applied in superelastic low elastic modulus titanium alloy material and its preparation, superelastic low elastic modulus Ti-Nb-Zr-O alloy material and its preparation field, can solve alloy critical Problems such as low slip stress and low superelasticity achieve the effect of reducing the difficulty of smelting

Inactive Publication Date: 2016-06-29
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the Ti-Nb binary alloy, when the Nb content exceeds 25at%, the alloy exhibits superelasticity, but the superelasticity is low, which is mainly due to the low critical slip stress of the alloy, so it is necessary to strengthen the alloy

Method used

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  • Super-elasticity low-elastic-modulus titanium alloy material and preparation method and application thereof
  • Super-elasticity low-elastic-modulus titanium alloy material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Preparation of Ti-18Nb-10Zr-0.5O alloy material

[0022] (1) Ti-18Nb-10Zr-0.5O alloy, the raw materials are 0-grade sponge Ti, firearms-grade sponge Zr, Ti-45Nb master alloy, TiO 2 The powder is batched according to the composition ratio, smelted in a non-consumable vacuum electric arc furnace, fully stirred, and the number of smelting is 3 to 5 times to obtain Ti-18Nb-10Zr-0.5O ingot;

[0023] (2) The Ti-18Nb-10Zr-0.5O alloy obtained above was subjected to wire cutting, put into a heat treatment furnace for heat treatment, and then water quenched after the heat treatment temperature was kept at 850°C for 1 hour.

[0024] (3) cold rolling the alloy after solution treatment, with a deformation amount of 90%, in the air; Ti-18Nb-10Zr-0.5O plate can be obtained;

[0025] (4) The cold-rolled sheet is annealed at 600°C for 0.5h, and air-cooled to obtain a complete β-phase structure.

[0026] Material properties: room temperature superelasticity 2.5%, elastic mod...

Embodiment 2

[0027] Example 2: Preparation of Ti-18Nb-10Zr-1.5O alloy material

[0028] (1) Ti-18Nb-10Zr-1.5O alloy, raw materials are 0 grade sponge Ti, firearms grade sponge Zr, Ti-45Nb master alloy, TiO 2 The powder is batched according to the composition ratio, melted in a non-consumable vacuum electric arc furnace, fully stirred, and the number of melting times is 3 to 5 times to obtain Ti-18Nb-10Zr-1.5O ingot;

[0029] (2) The Ti-18Nb-10Zr-1.5O alloy obtained above was subjected to wire cutting, put into a heat treatment furnace for heat treatment, and was kept at 850° C. for 1.5 hours, then water quenched.

[0030] (3) cold rolling the alloy after solution treatment, with a deformation amount of 80%, in the air; Ti-18Nb-10Zr-1.5O plate can be obtained;

[0031] (4) The cold-rolled sheet is annealed at 580°C for 1 hour, and air-cooled to obtain a complete β-phase structure.

[0032] Material properties: room temperature superelasticity 3%, elastic modulus 58GPa, elongation 10%.

Embodiment 3

[0033] Example 3: Preparation of Ti-18Nb-13Zr-0.5O alloy material

[0034] (1) Ti-18Nb-13Zr-0.5O alloy, the raw materials are 0-grade sponge Ti, firearms-grade sponge Zr, Ti-45Nb master alloy, TiO 2 The powder is batched according to the composition ratio, smelted in a non-consumable vacuum electric arc furnace, fully stirred, and the number of smelting times is 3 to 5 times to obtain Ti-18Nb-13Zr-0.5O ingot;

[0035] (2) Carry out wire cutting of the Ti-18Nb-13Zr-0.5O alloy prepared above, put it into a heat treatment furnace for heat treatment, keep it at 800° C. for 1.5 hours, and then quench it in water.

[0036] (3) cold rolling the alloy after solution treatment, with a deformation amount of 85%, in air; Ti-18Nb-13Zr-0.5O plate can be obtained;

[0037] (4) Anneal the cold-rolled sheet at 500°C for 0.5h, and air-cool to obtain a complete β-phase structure.

[0038] Material properties: room temperature superelasticity 3.3%, elastic modulus 53GPa, elongation 20%.

[00...

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Abstract

The invention relates to a superelastic low elastic modulus titanium alloy material and a preparation method and application thereof, belonging to the field of biomedical materials. The alloy material is composed of niobium, zirconium, oxygen and titanium, and its atomic percentage composition is 18% of niobium, 10-13% of zirconium, 0.5-1.5% of oxygen, and the rest is titanium. Using vacuum non-consumable electric arc furnace melting plus solution treatment, cold rolling, and short-time annealing treatment, the room temperature superelasticity of the obtained material is 2.5-4.5%, the elastic modulus is 50-60GPa, and the elongation is 6-20%. It is suitable for biomedical materials such as brackets and dental arch wires.

Description

technical field [0001] The invention relates to a superelastic low elastic modulus titanium alloy material and its preparation method and application, in particular to a superelastic low elastic modulus Ti-Nb-Zr-O alloy material and its preparation method and application, belonging to biomedical materials field. Background technique [0002] Due to its excellent shape memory effect and superelasticity, TiNi alloy is widely used in medical fields such as dentistry and interventional therapy, but Ni is biologically toxic and can cause symptoms such as neurological disorders. In order to avoid the biological toxicity of Ni, countries have successively developed nickel-free biomedical materials to replace TiNi alloys. Titanium alloys have attracted extensive attention due to their high specific strength, good biocompatibility, excellent corrosion resistance, and good cold forming properties. A large number of studies have shown that elements such as Nb, Ta, Zr, Mo, and Sn have...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22F1/18A61L27/06A61L31/02
Inventor 宋晓云叶文君惠松骁于洋刘睿李成林
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
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