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Preparation method of low-modulus and high-toughness silver-containing titanium alloy

A titanium alloy and low-modulus technology, which is applied in the field of preparation of low-modulus, high-strength and tough silver-containing titanium alloys, can solve the problems of alloy tensile plasticity reduction, avoid the influence of elastic modulus, avoid the segregation of Ag elements, and improve The effect of dispersion uniformity

Active Publication Date: 2020-06-19
西安稀有金属材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of alloying elements will also bring negative effects, as shown by the research results of MasatoshiTAKAHASHI et al. (Mechanical Properties and Microstructures of DentalCast Ti-Ag and Ti-Cu Alloys, Dental Materials Journal 21(3):270-280,2002 The Tensile Plasticity of Ti-Ag and Ti-Cu Alloys Decreased Sharply After Adding Ag and Cu Elements to Pure Ti Matrix

Method used

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  • Preparation method of low-modulus and high-toughness silver-containing titanium alloy
  • Preparation method of low-modulus and high-toughness silver-containing titanium alloy
  • Preparation method of low-modulus and high-toughness silver-containing titanium alloy

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Embodiment 1

[0025] This embodiment includes the following steps:

[0026] Step 1. Preparation of mixed powder: 199.2g of Ti-3Zr-2Sn-3Mo-25Nb titanium alloy powder was mixed with 0.8g nano-Ag powder by low-energy ball milling to obtain a mixed powder; the average particle size of the nano-Ag powder was 6nm, Ti - The particle size of the 3Zr-2Sn-3Mo-25Nb titanium alloy powder is 53 μm to 75 μm, the ball-to-material ratio of the low-energy ball mill is 3:1, the rotation speed is 200 rpm, and the ball milling time is 1 h;

[0027] Step 2, sintering and forming: sintering and forming the mixed powder obtained in step 1 to obtain a silver-containing titanium-based sintered compact; the pressure used in the sintering and forming is 35 MPa, the temperature is 900 ° C, and the holding time is 1 min;

[0028] Step 3, preparation and molding: hot rolling the silver-containing titanium-based sintered billet obtained in step 2 to obtain a silver-containing titanium alloy plate; the hot-rolling process...

Embodiment 2

[0041] This embodiment includes the following steps:

[0042] Step 1. Preparation of mixed powder: 198.2g of Ti-3Zr-2Sn-3Mo-25Nb titanium alloy powder and 1.8g of nano-Ag powder were mixed by low-energy ball milling to obtain a mixed powder; the average particle size of the nano-Ag powder was 6nm, Ti - The particle size of the 3Zr-2Sn-3Mo-25Nb titanium alloy powder is 53 μm to 75 μm, the ball-to-material ratio of the low-energy ball mill is 3:1, the rotation speed is 200 rpm, and the ball milling time is 1 h;

[0043] Step 2, sintering and forming: sintering and forming the mixed powder obtained in step 1 to obtain a silver-containing titanium-based sintered compact; the pressure used in the sintering and forming is 45 MPa, the temperature is 1000 ° C, and the holding time is 3 minutes;

[0044] Step 3, preparation and molding: hot rolling the silver-containing titanium-based sintered billet obtained in step 2 to obtain a silver-containing titanium alloy plate; the hot-rolling...

Embodiment 3

[0046] This embodiment includes the following steps:

[0047] Step 1. Preparation of mixed powder: 198.7g of Ti-3Zr-2Sn-3Mo-25Nb titanium alloy powder and 1.3g of nano-Ag powder were mixed by low-energy ball milling to obtain a mixed powder; the average particle size of the nano-Ag powder was 6nm, Ti - The particle size of the 3Zr-2Sn-3Mo-25Nb titanium alloy powder is 53 μm to 75 μm, the ball-to-material ratio of the low-energy ball mill is 3:1, the rotation speed is 200 rpm, and the ball milling time is 1 h;

[0048] Step 2, sintering and forming: sintering and forming the mixed powder obtained in step 1 to obtain a silver-containing titanium-based sintered compact; the pressure used in the sintering and forming is 40 MPa, the temperature is 950 ° C, and the holding time is 2 minutes;

[0049] Step 3, preparation and molding: hot rolling the silver-containing titanium-based sintered billet obtained in step 2 to obtain a silver-containing titanium alloy plate; the hot-rolling ...

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Abstract

The invention discloses a preparation method of low-modulus and high-toughness silver-containing titanium alloy. The preparation method comprises the following steps: 1, carrying out low-energy ball-milling mixing on titanium alloy powder and nano silver powder to obtain mixed powder, wherein the titanium alloy powder is in the micrometer scale and the nominal composition of the titanium alloy powder is Ti-3Zr-2Sn-3Mo-25Nb; 2, sintering the mixed powder to form silver-containing titanium-based sintering blanks; and 3, carrying out hot-rolling treatment on the silver-containing titanium-based sintering blanks to obtain silver-containing titanium alloy profile. According to the preparation method, low-energy ball-milling mixing is adopted to uniformly disperse nano silver powder on the surface of titanium alloy powder, so that during the sintering process, nano silver powder is uniformly diffused and solid-solution of nano silver powder is carried out on titanium alloy matrix, segregation of the Ag element is effectively avoided, dispersing uniformity of Ag in silver-containing titanium alloy profile is improved, the plasticity is not damaged while ensuring that the strength of the silver-containing titanium alloy profile is improved, and the low elasticity modulus characteristic is kept.

Description

technical field [0001] The invention belongs to the technical field of alloy material preparation, and in particular relates to a method for preparing a low-modulus high-strength and tough silver-containing titanium alloy. Background technique [0002] The β-type Ti-3Zr-2Sn-3Mo-25Nb alloy is a non-toxic and non-allergenic titanium alloy, which has been extensively studied and concerned due to its biological safety, comprehensive mechanical properties and outstanding low elastic modulus surface , has a low elastic modulus, which is conducive to stress buffering and uniform transmission between the implant and the bone, and is a biomedical titanium alloy with great potential for clinical application. [0003] A large number of literature and patent reports have shown that by adding other chemical elements (such as Ag, Cu, etc.) to the pure titanium and titanium alloy matrix, the matrix alloy can exhibit special functionality. Ma Zheng's research ("Preparation and Properties o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/04C22C14/00B22F9/04B22F3/14B22F3/18
CPCB22F3/14B22F3/18B22F9/04B22F2003/185B22F2009/043B22F2998/10C22C1/0466C22C14/00
Inventor 霍望图张于胜董龙龙卢金文刘跃刘亮吴昊雷诚心
Owner 西安稀有金属材料研究院有限公司
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