Method for preparing titanium material through powder metallurgy with modifier

A powder metallurgy and modifying agent technology, which is applied in the field of powder metallurgy to prepare titanium materials, can solve the problems of uncontrollable structure, reduced plasticity, coarse structure, etc., and achieve strengthening and toughening, tensile strength and elongation, and increase The effect of the ability to deform uniformly

Inactive Publication Date: 2018-05-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problem of coarse structure and reduced plasticity of the titanium material prepared by the existing powder metallurgy method due to uncontrollable structure, and provides a method for preparing titanium material by powder metallurgy adding a modifier

Method used

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  • Method for preparing titanium material through powder metallurgy with modifier
  • Method for preparing titanium material through powder metallurgy with modifier
  • Method for preparing titanium material through powder metallurgy with modifier

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specific Embodiment approach 1

[0013] Embodiment 1: A method for preparing titanium material by powder metallurgy in this embodiment is carried out according to the following steps:

[0014] 1. Mechanical stirring and powder mixing: 0.05% to 1% of the modifier powder and 99% to 99.95% of the titanium material powder are mechanically mixed with a stirring mixer according to the mass percentage, and the powder mixing time is 1h to 15h to obtain Composite powder; the titanium material is pure titanium or a titanium alloy; the modifier powder has a particle size of 0.1-5 μm, and the titanium material powder has a particle size of 37-300 μm;

[0015] 2. Sintering: Put the composite powder into a vacuumized airtight container for sintering, sintering at a sintering temperature of 850-1500°C and a pressure of 10-200MPa for 0.5h-5h, and naturally cool to room temperature to obtain a controllable structure Modified powder metallurgy titanium materials.

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that the titanium alloy described in step 1 is an α+β-type dual-phase high-strength titanium alloy TC4-TC21 series titanium alloy. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the titanium alloy described in step 1 is a TA1-TA19 series titanium alloy of a near-α-type high-temperature titanium alloy. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for preparing a titanium material through powder metallurgy with a modifier, relates to a method for preparing the titanium material through powder metallurgy and aimsto solve the problems that a titanium material prepared by using a conventional powder metallurgy material is large in texture and degraded in plasticity as textures cannot be controlled. The methodcomprises the following steps: I, performing mechanical powder stirring and mixing, namely mechanically mixing modifier powder, pure titanium and titanium alloy powder by using a stirring and mixing machine so as to obtain composite powder; II, performing sintering, namely sintering the composite powder in a vacuumed sealed container, and naturally cooling to a room temperature, thereby obtaininga modified powder metallurgy titanium material with controllable textures.

Description

technical field [0001] The invention relates to a method for preparing titanium material by powder metallurgy. Background technique [0002] Compared with other metal materials, titanium has many excellent properties such as high specific strength, high temperature strength and good corrosion resistance. It is used in mechanical engineering, biomedicine, marine engineering, chemical industry, metallurgy, building materials and general civil industries. It has been widely used in aerospace field and weapon equipment field. Titanium has excellent properties and abundant reserves. From the perspective of the development prospect of industrial value and resource life, it is second only to iron and aluminum and is known as the rising "third metal". With very high strength-to-weight ratio, excellent corrosion resistance, high melting point, low linear expansion coefficient and other excellent properties, it is called the most important metal material in the 21st century. Howeve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C14/00C22C32/00B22F1/00
CPCC22C1/058B22F1/0003B22F2998/10B22F2999/00C22C14/00C22C32/0057C22C32/0073B22F3/14B22F3/15B22F3/105
Inventor 黄陆军姜山安琦张芮王存玉李阳纪明耿林
Owner HARBIN INST OF TECH
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