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A rapid screening method for bio-titanium alloys with low elastic modulus

A technology with low elastic modulus and elastic modulus, applied in the field of material research, can solve problems such as difficulty in ensuring the rigor of experimental conclusions, lack of comprehensive BCC phase titanium alloy system, systematic understanding, basic theoretical research and product development bottlenecks. , to achieve the effect that is easy to achieve

Active Publication Date: 2020-02-07
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the one hand, this method requires a lot of manpower and material resources to carry out large-scale experiments, and it is difficult to guarantee the rigor of the experimental conclusions. On the other hand, due to the limited experimental points, researchers lack comprehensive and systematic research on the BCC phase titanium alloy system. understanding, which in turn leads to bottlenecks in related basic theoretical research and product development

Method used

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  • A rapid screening method for bio-titanium alloys with low elastic modulus
  • A rapid screening method for bio-titanium alloys with low elastic modulus
  • A rapid screening method for bio-titanium alloys with low elastic modulus

Examples

Experimental program
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Embodiment 1

[0040] This embodiment provides a method for quickly screening Ti-Nb-Zr alloys with low elastic modulus.

[0041] (1) Calculate the phase diagram of the Ti-Nb-Zr system alloy, and the obtained isothermal section diagram at 900 °C is as follows figure 1 As shown, the components of the two terminal components are determined to be pure Ti and Ti-17.70at.%Nb-29.50at.%Zr alloy, respectively.

[0042] (2) Using high-purity Ti, high-purity Nb and high-purity Zr as raw materials, smelting pure Ti metal ingots and Ti-17.70at.%Nb-29.50at.%Zr alloy metal ingots in an electric arc melting furnace. During smelting, the arc temperature exceeds 3400°C, and the metal ingot is turned over five times, with an interval of 1 minute between each turn. After smelting, the obtained metal ingot is wire-cut, and the core size is 8×8×1mm 3 of blocks. The surface of the block is subjected to rough grinding, fine grinding, ultrasonic cleaning with deionized water, and low-temperature drying, and then ...

Embodiment 2

[0046] This embodiment provides a method for quickly screening Ti-Nb-Cr alloys with low elastic modulus.

[0047] (1) Calculate the phase diagram of the Ti-Nb-Cr system alloy, and the obtained isothermal section diagram at 1000 °C is as follows Figure 5 As shown, the components of the two terminal elements are determined to be Ti-17.35at.%Nb alloy and Ti-9.20at.%Cr alloy respectively.

[0048] (2) Using high-purity Ti, high-purity Nb and high-purity Cr as raw materials, melt Ti-17.35at.% Nb alloy metal ingots and Ti-9.20at.% Cr alloy metal ingots in an electric arc melting furnace. During smelting, the arc temperature exceeds 3400°C, and the metal ingot is turned over five times, and the interval between each turning is 1 minute. After smelting, the obtained metal ingot is wire-cut, and the core size is 8×8×2mm 3 of blocks. The surface of the block is subjected to rough grinding, fine grinding, deionized water ultrasonic cleaning and low-temperature drying in sequence, and...

Embodiment 3

[0052] This embodiment provides a method for quickly screening Ti-Nb-Zr-Cr alloys with low elastic modulus.

[0053] (1) Calculate the phase diagram of the Ti-Nb-Zr-Cr system alloy, and determine that the components of the two terminal elements are pure Ti and Ti-26.70at.%Nb-10.50at.%Zr-2.7at.%Cr alloy.

[0054] (2) Using high-purity Ti, high-purity Nb, high-purity Zr and high-purity Cr as raw materials, melt pure Ti metal ingots and Ti-26.70at.%Nb-10.50at.%Zr-2.7at. %Cr alloy metal ingots. During smelting, the arc temperature exceeds 3400°C, and the metal ingot is turned over five times, and the smelting time is 1 minute each time. After smelting, the obtained metal ingot is wire-cut, and the core size is 8×8×2mm 3 of blocks. The surface of the block is subjected to rough grinding, fine grinding, deionized water ultrasonic cleaning and low-temperature drying, and then placed in a vacuum-sealed quartz tube with titanium sponge (vacuum degree lower than 10Pa), in an anneali...

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Abstract

The invention belongs to the field of material research methods, and particularly relates to a method for quickly screening a low-elastic-modulus biomedical titanium alloy. The method comprises the steps that firstly, two terminal element components in a BCC-phase titanium alloy are determined according to a phase diagram calculation result; secondly, two terminal elements are obtained through smelting, linear cutting and annealing sequentially by taking pure metals as raw materials according to the components; thirdly, the two terminal elements are fixed together to be subjected to annealingtreatment, and a diffusion couple is obtained; and lastly, component gradient analyzing and elastic modulus testing are conducted on a BBC phase in the diffusion couple, the corresponding relation between the titanium alloy components and the elastic modulus is obtained, and then the composition of the low-elastic-modulus biomedical titanium alloy is determined. The screening method is easy to achieve, efficient and quick, and the research, labor and time cost can be greatly saved compared with a traditional research method. A large amount of approximately continuous phase composition-alloy component-elastic modulus corresponding experimental data information is obtained in a short time, and then a BCC-phase titanium alloy system can be comprehensively and systematically known.

Description

technical field [0001] The invention belongs to the field of material research methods, and in particular relates to a method for rapidly screening low elastic modulus biological titanium alloys. Background technique [0002] Biotitanium alloy is a very important industrial material. Due to its low elastic modulus and good biocompatibility, it is widely used in clinical medicine as a human hard tissue implant material. Considering the non-toxicity to the human body, the main additive elements in bio-titanium alloys include Cr, Fe, Hf, Mn, Mo, Nb, Sn, Ta, W, and Zr, etc., and the titanium alloys containing the above additive elements are solid solution treated A BCC phase titanium alloy is formed. At present, Ti-Nb-based, Ti-Zr-based, Ti-Nb-Zr-based, Ti-Nb-Ta-Zr-based and Ti-Nb-Zr-Sn-based alloys are the main alloy systems for the research and development of low elastic modulus biotitanium alloys. , while Ti-Cr-based, Ti-Fe-based and Ti-Mn-based alloys are related alloy sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22F1/18G01N3/42
CPCC22C14/00C22F1/183G01N3/42
Inventor 陈伟民李卫
Owner JINAN UNIVERSITY