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A kind of preparation method of ti-13nb-13zr alloy

An alloy and metal technology, applied in the field of titanium alloy preparation by powder metallurgy, can solve the problems of long process flow, high energy consumption in the production process, high production cost, etc., and achieve the effects of shortening the process flow, reducing production cost and excellent performance

Active Publication Date: 2018-11-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the traditional production method of using pure titanium powder as raw material to prepare Ti-13Nb-13Zr alloy has long technical process, high energy consumption in the production process, low yield, complicated follow-up processing, and production high cost problem

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  • A kind of preparation method of ti-13nb-13zr alloy
  • A kind of preparation method of ti-13nb-13zr alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of Ti-13Nb-13Zr alloy described in this embodiment specifically comprises the following steps:

[0019] (1) According to the standard composition ratio of Ti-13Nb-13Zr alloy, weigh 325 mesh TiH 2 powder, metal Nb powder and ZrH 2 powder.

[0020] (2) Put the weighed powders into a ball mill tank with a ball-to-material ratio of 3:1, with a charging volume of 40%, using a planetary high-energy ball mill, setting the ball milling speed to 150r / min, and the ball milling time to 150min.

[0021] (3) Weigh 4 g of the ball-milled mixed powder and put it into a cylindrical molding die. Use a powder tablet press with a pressing pressure of 6 MPa and a holding time of 10 minutes.

[0022] (4) Put the green compact into the high vacuum sintering furnace, continue to vacuum during the sintering process, and keep the vacuum degree less than or equal to 10 -2 Pa, set the basic heating rate to 10°C / min, set up heat preservation platforms at 400°C, 500°C, 600...

Embodiment 2

[0025] The preparation method of Ti-13Nb-13Zr alloy described in this embodiment specifically comprises the following steps:

[0026] (1) According to the standard composition ratio of Ti-13Nb-13Zr alloy, weigh 325 mesh TiH 2 powder, metal Nb powder and ZrH 2 powder.

[0027] (2) Put the weighed powders into a ball mill tank with a ball-to-material ratio of 4:1, with a charging volume of 41%, using a planetary high-energy ball mill, setting the ball milling speed to 250r / min, and the ball milling time to 120min.

[0028] (3) Weigh 4 g of the ball-milled mixed powder and put it into a cylindrical molding die. Use a powder tablet press with a pressing pressure of 7 MPa and a holding time of 10 minutes.

[0029] (4) Put the green compact into the high vacuum sintering furnace, continue to vacuum during the sintering process, and keep the vacuum degree less than or equal to 10 -2 Pa, set the basic heating rate to 10°C / min, set the heat preservation platforms at 400°C, 500°C, 60...

Embodiment 3

[0032] The preparation method of Ti-13Nb-13Zr alloy described in this embodiment specifically comprises the following steps:

[0033] (1) According to the standard composition ratio of Ti-13Nb-13Zr alloy, weigh 400 mesh TiH 2 powder, metal Nb powder and ZrH 2 powder.

[0034] (2) Put the weighed powders into a ball mill tank with a ball-to-material ratio of 5:1, with a charging volume of 40%, using a planetary high-energy ball mill, setting the ball milling speed to 200r / min, and the ball milling time to 90min.

[0035] (3) Weigh 4 g of the ball-milled mixed powder and put it into a cylindrical molding die. Use a powder tablet press with a pressing pressure of 8 MPa and a holding time of 10 minutes.

[0036] (4) Put the green compact into the high vacuum sintering furnace, continue to vacuum during the sintering process, and keep the vacuum degree less than or equal to 10 -2 Pa, set the basic heating rate to 10°C / min, set the heat preservation platforms at 400°C, 500°C, 600...

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Abstract

The invention relates to a preparation method of a Ti-13Nb-13Zr alloy and belongs to the technical field of titanium alloy preparation through the powder metallurgy method. The method comprises the steps that TiH2 powder, metal Nb powder and ZrH2 powder are directly mixed according to the standard proportion of the Ti-13Nb-13Zr alloy and subjected to ball milling; and the mixed powder is pressed to be formed, a pressed blank is obtained, then the pressed blank is subjected to vacuum sintering, and finally the high-density Ti-13Nb-13Zr alloy is prepared. The prominent problems of long technology process, high energy consumption in the production process, low product rate, complex subsequent machining process, high production cost and the like in a traditional production method for preparing the Ti-13Nb-13Zr alloy with pure titanium powder in the prior art are solved.

Description

technical field [0001] The invention belongs to the technical field of preparing titanium alloy by powder metallurgy, and in particular relates to a preparation method of Ti-13Nb-13Zr alloy. Background technique [0002] Titanium is one of the important non-ferrous metal elements. As a rare metal, titanium and its alloys, and titanium compound materials have unique and excellent comprehensive properties, among which titanium alloy Ti-13Nb-13Zr is a kind of comprehensive performance. The near-β-type biomedical titanium alloy has medium and high strength, high plasticity, high toughness, high fatigue strength, low elastic modulus, excellent corrosion resistance and biocompatibility, and has no cytotoxicity. It is currently the most potential One of the biomaterials. Although the application of titanium alloys in medicine has great advantages, the high price hinders its large-scale application. The main production method of the traditional Ti-13Nb-13Zr alloy is the melting and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/04C22C14/00B22F3/10
CPCB22F3/001B22F3/1007B22F2998/10B22F2999/00C22C1/0458C22C14/00B22F2009/043B22F3/02B22F2201/20
Inventor 张家敏王静哲甘国友严继康杜景红
Owner KUNMING UNIV OF SCI & TECH