CN101760669A - Cast titanium alloy with low elastic modulus - Google Patents
Cast titanium alloy with low elastic modulus Download PDFInfo
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- CN101760669A CN101760669A CN 200910248863 CN200910248863A CN101760669A CN 101760669 A CN101760669 A CN 101760669A CN 200910248863 CN200910248863 CN 200910248863 CN 200910248863 A CN200910248863 A CN 200910248863A CN 101760669 A CN101760669 A CN 101760669A
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Abstract
The invention provides cast titanium alloy with low elastic modulus. The name group of the titanium alloy is Ti19Nb11Ta11Zr. According to the mass percent, the chemical composition of the cast titanium alloy is as follows: Nb (18.0 to 20.0%), Ta (10.0 to 12.0%), and Zr (9.5 to 12.5%); impurities element: C (lower than or equal to 0.10%), Si (lower than or equal to 0.15%), Fe (lower than or equal to 0.3%), N (lower than or equal to 0.05%), H (lower than or equal to 0.015%), and O (lower than or equal to 0.15%); and the rest is titanium. The invention can obviously reduce the elastic modulus of the titanium alloy to 62GPa from 110GPa, so as to be closer to that (within 10 to 30GPa) of a human or animal skeleton, thereby lessening the impact of stress shielding of a titanium alloy implant. In addition to low elastic modulus, the cast titanium alloy also has the characteristics of high intensity and wide application prospect; therefore, the cast titanium alloy can be popularized and applied for medical implantation and can be suitable for the application of special structures such as aviation, aerospace, ships, warships and the like. The cast titanium alloy can be formed by the ordinary casting or forging method.
Description
Technical background
The present invention relates to a kind of alloy, specifically relate to a kind of cast titanium alloy of low elastic modulus.
Background technology
Titanium alloy is that a kind of density is little, intensity is high, corrosion-resistant, non-magnetic important structure material, is widely used in every field such as Aeronautics and Astronautics, weaponry, sea transport, biologic medical, physical culture.In recent years, along with science and technology is fast-developing, the demand of special property titanium alloy material is increased day by day.The titanium alloy of low elastic modulus also obtains heavy demand in all kinds of equipments field of making.Compare with the Young's modulus 200GPa of steel commonly used, the Young's modulus of titanium alloy only has 110GPa, belongs to the lower material of Young's modulus.But for some special application fields (as medical embedded material), require Young's modulus to be near or below 30GPa, the Young's modulus of conventional titanium alloy is still bigger than normal, can't use.But some special dimensions have only specific tenacity height, titanium alloy high temperature resistant, corrosion-resistant, no magnetic just can meet the demands, and therefore are badly in need of having the titanium alloy material of low elastic modulus.
Summary of the invention
The titanium alloy material that the purpose of this invention is to provide a kind of low elastic modulus, this alloy material is guaranteeing significantly to have reduced its Young's modulus under the high-intensity characteristics of titanium alloy.
The technical scheme that adopts is:
A kind of casting titanium alloy material of low elastic modulus, it is Ti19Nb11Ta11Zr that the name of this alloy material is formed, chemical constitution (mass percent) is Nb:18.0～20.0%, Ta:10.0～12.0%, Zr:9.5～12.5%, impurity content should be controlled at C≤0.10%, Si≤0.15%, Fe≤0.3%, N≤0.05%, H≤0.015%, O≤0.15%, and surplus is Ti.
The step of preparation process of this alloy is:
1, gets four kinds of pure metal materials of titanium sponge, sponge niobium, sponge tantalum, zirconium sponge of the Zr of 18.0～20.0% Nb, 10.0～12.0% Ta and 9.5～12.5% by alloy mass per-cent.
2, above-mentioned four kinds spongy pure metal materials are positioned in the cylindrical metal mould (internal diameter should be 0.7～1.0 times of melting equipment electrode maximum diameter) uniformly, adopt hydropress (as YC32-100) to carry out pressing, (length is decided according to the melting equipment that is adopted to make it to become the pole shape, generally should be 0.5～1.0 times of electrode range), adopt manual tungsten electrode argon arc welding machine (as NSA4-300) the required top electrode of vacuum consumable skull crucible (ZN-80) melting of burn-oning at pole one end suppressed again, it is standby to make consumable electrode.
3, the consumable electrode that will prepare (alloy bar of having suppressed) is installed on the electrode position of vacuum consumable skull crucible, adopt the vacuum consumable skull crucible to finish the melting of alloy again, adopt Ti alloy casting to cast at last, need can obtain the interior cast titanium alloy of preparation composition range with accurate casting mold or machining graphite mould.
This heat treatment of alloy scheme is: the cast titanium alloy of mentioned component is carried out solution heat treatment, and solution heat treatment temperature is 700-800 ℃, is incubated 0.5-1.5 hour, water-cooled, again through timeliness thermal treatment, the timeliness thermal treatment temp is 480-580 ℃, be incubated 6-10 hour, air cooling.
The Young's modulus of Ti19Nb11Ta11Zr under normal temperature after the solution heat treatment is 55～66GPa, and tensile strength can reach 680～750MPa, and yield strength reaches 550～650MPa, elongation 18～25%, relative reduction in area 40～55%; After timeliness thermal treatment (6～10 hours air coolings of 480～580 ℃ of insulations), can reach 65～75GPa, tensile strength 720～850MPa under the room temperature, yield strength 670～820MPa, elongation 10～12%, relative reduction in area 25～30%.
The exploitation of this material makes the Young's modulus of titanium alloy significantly be reduced to 62GPa by 110GPa, more approach human body and animal body bone Young's modulus (10～30GPa), the influence that has alleviated titanium alloy implant " stress shielding ".Except that Young's modulus was low, this material also had advantages of high strength, can be applied to medical treatment and implant, and the application of special constructions such as Aeronautics and Astronautics, naval vessel has broad application prospects.This material can adopt methods such as titanium alloy casting commonly used or forging to form.
Embodiment
Embodiment one:
The chemical constitution of casting alloy (mass percent) is Nb:18.0%, Ta:10.0%, and Zr:9.5%, impurity content are C:0.02%, Si:0.05%, Fe:0.08%, N:0.01%, H:0.005%, O:0.05%, surplus is Ti.
The cast titanium alloy of mentioned component is heat-treated by following technology: 720 ℃ of solution heat treatment temperature, be incubated 0.5 hour, water-cooled, again through timeliness thermal treatment, the timeliness thermal treatment temp is 480 ℃, is incubated 6 hours, air cooling.
The Young's modulus of Ti19Nb11Ta11Zr under normal temperature after the solution heat treatment is 57GPa, tensile strength 695MPa, and yield strength reaches 585MPa, elongation 24%, relative reduction in area 54%; Young's modulus can reach 67GPa after timeliness thermal treatment, tensile strength 780MPa under the room temperature, yield strength 690MPa, elongation 12%, relative reduction in area 29%.
Embodiment two:
The chemical constitution of casting alloy (mass percent) is Nb:19.0%, Ta:11.0%, and Zr:10.5%, impurity content are C:0.04%, Si:0.03%, Fe:0.10%, N:0.02%, H:0.008%, O:0.10%, surplus is Ti.
The cast titanium alloy of mentioned component is heat-treated by following technology: 750 ℃ of solution heat treatment temperature, be incubated 1 hour, water-cooled, again through timeliness thermal treatment, the timeliness thermal treatment temp is 530 ℃, is incubated 8 hours, air cooling.
The Young's modulus of Ti19Nb11Ta11Zr under normal temperature after the above-mentioned thermal treatment is 60GPa, tensile strength 710MPa, and yield strength reaches 625MPa, elongation 22%, relative reduction in area 50%; Young's modulus can reach 69GPa after timeliness thermal treatment, tensile strength 805MPa under the room temperature, yield strength 750MPa, elongation 11%, relative reduction in area 28%.
Embodiment three:
The chemical constitution of casting alloy (mass percent) is Nb:20.0%, Ta:12.0%, and Zr:12.5%, impurity content are C:0.08%, Si:0.09%, Fe:0.12%, N:0.014%, H:0.007%, O:0.06%, surplus is Ti.
The cast titanium alloy of mentioned component is heat-treated by following technology: 800 ℃ of solution heat treatment temperature, be incubated 1.5 hours, water-cooled, again through timeliness thermal treatment, the timeliness thermal treatment temp is 580 ℃, is incubated 10 hours, air cooling.
The Young's modulus of Ti19Nb11Ta11Zr under normal temperature after the solution heat treatment is 63GPa, tensile strength 735MPa, and yield strength reaches 640MPa, elongation 19%, relative reduction in area 42%; Young's modulus can reach 73GPa after timeliness thermal treatment, tensile strength 835MPa under the room temperature, yield strength 805MPa, elongation 10.5%, relative reduction in area 26%.
Claims (2)
1. the cast titanium alloy of a low elastic modulus, it is characterized in that this titanium alloy name group is Ti19Nb11Ta11Zr, chemical constitution is Nb 18.0～20.0%, Ta 10.0～12.0% by percentage to the quality, Zr 9.5～12.5%, impurity content should be controlled at C≤0.10%, Si≤0.15%, Fe≤0.3%, N≤0.05%, H≤0.015%, O≤0.15%, and surplus is a titanium.
2. the heat treating method of the cast titanium alloy of a kind of low elastic modulus according to claim 1, comprise following processing step: the cast titanium alloy of above-mentioned chemical ingredients is carried out solution heat treatment, water-cooled, again through timeliness thermal treatment, air cooling is characterized in that above-mentioned solution heat treatment temperature is 700-800 ℃, is incubated 0.5-1.5 hour, above-mentioned timeliness thermal treatment temp is 480-580 ℃, is incubated 6-10 hour.
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Cited By (8)
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| CN103509959A (en) * | 2013-07-30 | 2014-01-15 | 中国船舶重工集团公司第七二五研究所 | Preparation method of biomedical low elastic modulus titanium tantalum niobium zirconium silicon alloy |
| CN104220612A (en) * | 2012-11-08 | 2014-12-17 | 韩国机械研究院 | Ultrahigh strength and ultralow elastic modulus titanium alloy showing linear elastic deformation behavior |
| CN105063424A (en) * | 2015-08-06 | 2015-11-18 | 陆春玲 | Preparation method of medical titanium alloy bar |
| CN105063423A (en) * | 2015-08-06 | 2015-11-18 | 陆春玲 | Medical graphene enhanced titanium alloy rod |
| CN107034383A (en) * | 2017-03-27 | 2017-08-11 | 华南理工大学 | One kind is containing high-strength low mould beta titanium alloys of Si and preparation method and application |
| CN108893628A (en) * | 2018-08-03 | 2018-11-27 | 中鼎特金秦皇岛科技股份有限公司 | A kind of low elastic modulus erosion resistant titanium alloy and preparation method thereof |
| CN110573636A (en) * | 2017-03-24 | 2019-12-13 | 法国洛林大学 | Metastable beta titanium alloy, clock spring made of such an alloy and method for producing same |
| CN114369744A (en) * | 2021-12-23 | 2022-04-19 | 中国科学院金属研究所 | Non-magnetic wide-temperature-range constant-elasticity titanium alloy and preparation method thereof |
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- 2009-12-29 CN CN 200910248863 patent/CN101760669A/en active Pending
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| US10087506B2 (en) | 2012-11-08 | 2018-10-02 | Korea Institute Of Machinery & Materials | Ultrahigh strength and ultralow elastic modulus titanium alloy showing linear elastic deformation behavior |
| CN104220612A (en) * | 2012-11-08 | 2014-12-17 | 韩国机械研究院 | Ultrahigh strength and ultralow elastic modulus titanium alloy showing linear elastic deformation behavior |
| CN104220612B (en) * | 2012-11-08 | 2016-06-29 | 韩国机械研究院 | The titanium alloy with superhigh intensity and ultralow elasticity modulus of display linear elastic ones's behavior |
| CN103509959B (en) * | 2013-07-30 | 2015-09-02 | 中国船舶重工集团公司第七二五研究所 | A kind of preparation method of bio-medical low elastic modulus titanium tantalum niobium zirconium silicon alloy |
| CN103509959A (en) * | 2013-07-30 | 2014-01-15 | 中国船舶重工集团公司第七二五研究所 | Preparation method of biomedical low elastic modulus titanium tantalum niobium zirconium silicon alloy |
| CN105063424A (en) * | 2015-08-06 | 2015-11-18 | 陆春玲 | Preparation method of medical titanium alloy bar |
| CN105063423A (en) * | 2015-08-06 | 2015-11-18 | 陆春玲 | Medical graphene enhanced titanium alloy rod |
| CN105063423B (en) * | 2015-08-06 | 2017-03-08 | 惠安百创贸易有限公司 | A kind of medical graphite alkene strengthens titanium alloy rod bar |
| CN105063424B (en) * | 2015-08-06 | 2017-03-22 | 惠安立科贸易有限公司 | Preparation method of medical titanium alloy bar |
| CN110573636B (en) * | 2017-03-24 | 2022-04-08 | 创新科技委员会有限公司 | Metastable beta titanium alloy, clock spring made of such an alloy and method for producing same |
| CN110573636A (en) * | 2017-03-24 | 2019-12-13 | 法国洛林大学 | Metastable beta titanium alloy, clock spring made of such an alloy and method for producing same |
| US11913106B2 (en) | 2017-03-24 | 2024-02-27 | Sas Inno Tech Conseils | Metastable ß titanium alloy, timepiece spring made from such an alloy and method for production thereof |
| CN107034383A (en) * | 2017-03-27 | 2017-08-11 | 华南理工大学 | One kind is containing high-strength low mould beta titanium alloys of Si and preparation method and application |
| US11891679B2 (en) | 2017-03-27 | 2024-02-06 | South China University Of Technology | High-strength and low-modulus β-type Si-containing titanium alloy, preparation method therefor and use thereof |
| CN108893628A (en) * | 2018-08-03 | 2018-11-27 | 中鼎特金秦皇岛科技股份有限公司 | A kind of low elastic modulus erosion resistant titanium alloy and preparation method thereof |
| CN114369744A (en) * | 2021-12-23 | 2022-04-19 | 中国科学院金属研究所 | Non-magnetic wide-temperature-range constant-elasticity titanium alloy and preparation method thereof |
| CN114369744B (en) * | 2021-12-23 | 2023-11-10 | 中国科学院金属研究所 | Non-magnetic width Wen Yuheng elastic titanium alloy and preparation method thereof |
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Open date: 20100630 |