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A kind of low-cost titanium alloy and preparation method thereof

A titanium alloy, low-cost technology, applied in the field of low-cost titanium alloy and its preparation, can solve the problems of unsatisfactory tensile strength, elongation, poor mechanical properties of materials, and brittle materials, etc., and achieve simple and feasible preparation methods, mechanical The effect of excellent performance and low preparation cost

Active Publication Date: 2020-05-08
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] As far as it is concerned, there is still a slightly high oxygen content in the prepared titanium alloy, which will cause the material to become brittle, resulting in poor mechanical properties of the material, such as unsatisfactory tensile strength and elongation, and the grain size of the prepared titanium alloy is relatively small. Technical problems such as large size and high cost need to be solved urgently

Method used

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  • A kind of low-cost titanium alloy and preparation method thereof
  • A kind of low-cost titanium alloy and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] A kind of preparation method of low-cost titanium alloy, it is to make according to the following steps:

[0023] 1. Premixing: Take 95 parts of titanium, 3.7 parts of vanadium, 0.8 parts of titanium oxide, 0.5 parts of vanadium oxide and binder in a double-cone or V-shaped mixing barrel. The total volume of metal powder and binder accounts for about The volume of the barrel is 1 / 3-1 / 2, the rotating speed of the barrel is set at 55r / min, the premixing time is 32min, the particle size of the raw material powder is 30-50μm, and the binder is a poly 88 parts of formaldehyde, 8 parts of high-density polyethylene, 8 parts of ethylene-vinyl acetate copolymer, 3 parts of stearic acid, 4 parts of xylitol, the total volume of the metal powder and the volume of the binder in the premixing process The ratio is 60:50.

[0024] 2. Internal mixing: put the premixed metal powder and binder mixture at 180°C for 2 hours.

[0025] 3. Granulation to obtain injection molding feed: put th...

Embodiment 2

[0036] A kind of preparation method of low-cost titanium alloy, it is to make according to the following steps:

[0037] 1. Premixing: Take 92 parts of titanium, 1.7 parts of vanadium, 0.1 parts of titanium oxide, 0.2 parts of vanadium oxide and binder in a double-cone or V-shaped mixing barrel. The total volume of metal powder and binder accounts for about The volume of the barrel is 1 / 3 to 1 / 2, the rotating speed of the barrel is set to 50r / min, the premixing time is 30min, the particle size of the raw material powder is 10-20μm, and the binder is a poly 80 parts of formaldehyde, 6 parts of high-density polyethylene, 6 parts of ethylene-vinyl acetate copolymer, 1 part of stearic acid, 1 part of xylitol, the total volume of the metal powder and the volume of the binder in the premixing process The ratio is 50:40.

[0038] 2. Internal mixing: Put the premixed metal powder and binder mixture at 150°C for 1 hour.

[0039]3. Granulation to obtain injection molding feed: put the...

Embodiment 3

[0046] A kind of preparation method of low-cost titanium alloy, it is to make according to the following steps:

[0047] 1. Premixing: Put 97.2 parts of titanium, 7 parts of vanadium, 1.25 parts of titanium oxide, 1.3 parts of vanadium oxide and binder into a double-cone or V-shaped mixing barrel. The total volume of metal powder and binder accounts for about The volume of the barrel is 1 / 3 to 1 / 2, the rotating speed of the barrel is set to 60r / min, the premixing time is 35min, the particle size of the raw material powder is 40-50μm, and the binder is a poly 92 parts of formaldehyde, 10 parts of high-density polyethylene, 10 parts of ethylene-vinyl acetate copolymer, 5 parts of stearic acid, 5 parts of xylitol, the total volume of the metal powder and the volume of the binder in the premixing process The ratio is 65:40.

[0048] 2. Internal mixing: Put the premixed metal powder and binder mixture at 200°C for 1 hour.

[0049] 3. Granulation to obtain injection molding feed: ...

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Abstract

A low-cost new titanium alloy is composed of the following elements in mass percentage, 0.3-0.9% of oxygen element, 2.5-7% of vanadium element, and 92.7-97.2% of titanium element. The novel titanium alloy designed by the present invention utilizes the stabilization mechanism of oxygen and vanadium elements on the different phase structures of titanium alloys, adopts powder injection molding technology, and prepares a dual-phase titanium alloy material containing oxygen and vanadium alloy elements and corresponding product, the preparation cost is low, the product density can be as high as 95~100%, the tensile strength can reach 800~1200MPa, the elongation can reach 3.5~10%, the grain size of the present invention is small, less than 30μm, and the secondary The thickness of the striped α phase is less than 100nm, the length is less than 1000nm, the preparation method is simple and feasible, and it is worthy of market promotion and application.

Description

technical field [0001] The invention relates to a low-cost titanium alloy and a preparation method thereof. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Many countries in the world have recognized the importance of titanium alloy materials, successively researched and developed it, and obtained practical applications. The first practical titanium alloy was the Ti-6Al-4V alloy successfully developed in the United States in 1954, because of its heat resistance, strength, plasticity, toughness, formability, weldability, corrosion resistance and biocompatibility. It is better, and has become the ace alloy in the titanium alloy industry, and the usage of this alloy has accounted for 75% to 85% of all titanium alloys. Many other titanium alloys can be regarded as modifications of Ti-6Al-4V alloy. [0003] Titanium alloy has the characteristics of low density, high strength, good corrosion resistance, and good biocompatibility. I...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C14/00C22C1/05C22C1/10B22F1/00B22F3/22B22F3/10
CPCC22C14/00C22C1/05B22F3/225B22F3/1021B22F1/103B22F1/10
Inventor 刘兵姜中涛姜山敬小龙邓莹陈巧旺
Owner CHONGQING UNIV OF ARTS & SCI