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Low elastic modulus Ti6Al4V alloy as well as preparation method and application thereof

A low elastic modulus and alloy technology, which is applied in the field of titanium alloy material preparation, can solve the problems of low elastic modulus and achieve the effects of increasing fatigue life, improving efficiency and reducing internal stress

Active Publication Date: 2020-02-04
HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, preparing a Ti6Al4V alloy for medical ultrasonic scalpels with mechanical properties that meet the needs of ultrasonic scalpels and a low elastic modulus has become an urgent problem to be solved in the field of Ti6Al4V alloys for medical ultrasonic scalpels.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The Ti6Al4V alloy was smelted with pure aluminum with a purity above 99.9wt.%, Al-V mesophase, pure Fe, pure Y and high-purity sponge titanium as raw materials, and the alloy with uniform composition was obtained by repeated smelting for 5 times. Al: 5.54wt.%; V: 4.44wt.%; Fe: 0.16wt.%; Y: 0.08wt.%; Ti: balance; other impurity elements meet relevant national standards. The obtained titanium ingot was heated to 950° C. and then hot-forged into a bar with a total deformation of 76%, and then air-cooled to room temperature. The obtained rod is heated to 930° C. and then hot-drawn into a wire. The total deformation of hot-drawing is 70%, and then air-cooled to room temperature. Annealing treatment in an annealing furnace, the first annealing temperature is 920°C, the annealing time is 1h, air-cooled to room temperature after the heat preservation is completed, the second annealing temperature is 780°C, the annealing time is 1.5h, and air-cooled to room temperature after the...

Embodiment 2

[0054] The Ti6Al4V alloy was smelted with pure aluminum with a purity above 99.9wt.%, Al-V mesophase, pure Fe, pure Y and high-purity sponge titanium as raw materials, and the alloy with uniform composition was obtained by repeated smelting for 5 times. Al: 5.64wt.%; V: 4.48wt.%; Fe: 0.18wt.%; Y: 0.04wt.%; Ti: balance; other impurity elements meet relevant national standards. The obtained titanium ingot was heated to 950° C. and then hot-forged into a bar with a total deformation of 77%, and then air-cooled to room temperature. The obtained rod is heated to 900° C. and then hot-drawn into a wire. The total deformation of hot-drawing is 75%, and then air-cooled to room temperature. Annealing in an annealing furnace, the first annealing temperature is 935°C, the annealing time is 1h, air-cooled to room temperature after the heat preservation is completed, the second annealing temperature is 770°C, the annealing time is 1.5h, air-cooled to room temperature after the heat preserva...

Embodiment 3

[0056] The Ti6Al4V alloy was smelted with pure aluminum with a purity above 99.9wt.%, Al-V mesophase, pure Fe, pure Y and high-purity sponge titanium as raw materials, and the alloy with uniform composition was obtained by repeated smelting for 5 times. Al: 6.2wt.%; V: 4.47wt.%; Fe: 0.18wt.%; Y: 0.01wt.%; Ti: balance; other impurity elements meet relevant national standards. The obtained titanium ingot was heated to 950° C. and hot-forged into a rod with a total deformation of 73%, and then air-cooled to room temperature. The obtained rods were heated to 930° C. and then hot-drawn into filaments. The total deformation of hot-drawing was 71%, and then air-cooled to room temperature. Annealing treatment in an annealing furnace, the first annealing temperature is 960°C, the annealing time is 2h, and air-cooled to room temperature after the heat preservation is completed, the second annealing temperature is 710°C, the annealing time is 1.5h, and air-cooled to room temperature afte...

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Abstract

The invention discloses a low elastic modulus Ti6Al4V alloy as well as a preparation method and application thereof. The Ti6Al4V alloy comprises the following components of, by mass, 5.5wt.% to 6.2wt.% of Al, 3.8wt.% to 4.5wt.% of V, 0.16wt.% to 0.22wt.% of Fe, 0.01wt.% to 0.1wt.% of Y and the balance Ti. The preparation method comprises the following steps of carrying out hot forging of a Ti6Al4Vtitanium alloy cast ingot, carrying out hot drawing, carrying out double annealing heat treatment, and carrying out machining to obtain the low elastic modulus Ti6Al4V alloy. The Ti6Al4V alloy has the elastic modulus of 80-90 GPa. According to the low elastic modulus Ti6Al4V alloy as well as the preparation method and application thereof, through mutual cooperation between the alloy components and the technology, the content of the beta phase is increased, so that the elastic modulus of the Ti6Al4V alloy is reduced.

Description

technical field [0001] The invention discloses a low elastic modulus Ti6Al4V alloy and a preparation method thereof and is applied to a medical ultrasonic knife, belonging to the field of preparation of titanium alloy materials. Background technique [0002] With the continuous improvement of medical technology, less surgical trauma, less pain, and faster postoperative recovery have become the development trend of surgical operations. Minimally invasive surgery uses laparoscopy, thoracoscopic and other modern medical equipment and related equipment to perform surgery. It is considerate to the patient to the greatest extent on the existing technical level, and achieves the purpose of small surgical trauma, light pain and fast postoperative recovery. It reduces the inconvenience and pain that the disease brings to patients and their families. [0003] As a commonly used instrument for minimally invasive surgery, the ultrasonic scalpel has the characteristics of high precision...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03C22F1/18
CPCC22C1/03C22C14/00C22F1/183
Inventor 李益民赵志刚鄢家杰彭淀
Owner HUNAN HANDLIKE MINIMALLY INVASIVE SURGERY CO LTD
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