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Preparation method of non-homogeneous layered-structure commercial pure titanium

A technology of industrial pure titanium and heterogeneous layer, which is applied in the field of preparation of industrial pure titanium with heterogeneous layered structure, can solve problems such as not being able to meet industrial production, and achieve improved comprehensive mechanical properties, simple process conditions, and easy operation Effect

Active Publication Date: 2019-05-31
NANJING UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the existing method, Wu et al. used a combination of asynchronous rolling and heat treatment to prepare industrially pure titanium with a heterogeneous layered structure. The highest strength can be close to 1000 MPa, and the uniform elongation can reach 9%. The thickness of the prepared heterogeneous industrial pure titanium is on the micron scale, which cannot meet the requirements of industrial production

Method used

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  • Preparation method of non-homogeneous layered-structure commercial pure titanium
  • Preparation method of non-homogeneous layered-structure commercial pure titanium
  • Preparation method of non-homogeneous layered-structure commercial pure titanium

Examples

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Effect test

Embodiment 1

[0027] First of all, the present embodiment adopts the following equipment: Hot-rolling and cold-rolling multi-purpose rolling mill, tubular vacuum annealing furnace. The specific operation of preparing a kind of industrial pure titanium with heterogeneous layered structure in this embodiment is as follows:

[0028] (1) The commercially pure titanium plate used in this example has a thickness of 15mm, and its composition (wt.%) is as follows: 0.15O, 0.01N, 0.01C, 0.03Fe, and the rest is Ti and unavoidable impurities.

[0029] (2) The above-mentioned commercially pure titanium plate was kept in a tube-type vacuum annealing furnace at 750° C. for 2 hours to obtain a homogenized structure with an average grain size of 70 μm.

[0030] (3) The industrial pure titanium plate after homogenization annealing is cold-rolled at room temperature, the initial thickness is 15mm, the rolling reduction per pass is 0.3-0.5mm, and the plate thickness is finally rolled to 3mm , The total roll...

Embodiment 2

[0034] First of all, the present embodiment adopts the following equipment: Hot-rolling and cold-rolling multi-purpose rolling mill, tubular vacuum annealing furnace. The specific operation of preparing a kind of industrial pure titanium with heterogeneous layered structure in this embodiment is as follows:

[0035] (1) The commercially pure titanium plate used in this example has a thickness of 15mm, and its composition (wt.%) is as follows: 0.15O, 0.01N, 0.01C, 0.03Fe, and the rest is Ti and unavoidable impurities.

[0036] (2) The above-mentioned commercially pure titanium plate was kept in a tube-type vacuum annealing furnace at 750° C. for 2 hours to obtain a homogenized structure with an average grain size of 70 μm.

[0037] (3) The industrial pure titanium plate after homogenization annealing is cold-rolled at room temperature, the initial thickness is 15mm, the rolling reduction per pass is 0.3-0.5mm, and the plate thickness is finally rolled to 3mm , The total roll...

Embodiment 3

[0041] First of all, the present embodiment adopts the following equipment: Hot-rolling and cold-rolling multi-purpose rolling mill, tubular vacuum annealing furnace. The specific operation of preparing a kind of industrial pure titanium with heterogeneous layered structure in this embodiment is as follows:

[0042] (1) The commercially pure titanium plate used in this example has a thickness of 10mm, and its composition (wt.%) is as follows: 0.15O, 0.01N, 0.01C, 0.03Fe, and the rest is Ti and unavoidable impurities.

[0043] (2) The above-mentioned commercially pure titanium plate was kept in a tube-type vacuum annealing furnace at 750° C. for 2 hours to obtain a homogenized structure with an average grain size of 70 μm.

[0044] (3) The industrial pure titanium plate after homogenization annealing is cold-rolled at room temperature, the initial thickness is 10mm, the rolling reduction per pass is 0.3-0.5mm, and the final plate thickness is rolled to 1mm , The total rollin...

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Abstract

The invention discloses a preparation method of non-homogeneous layered-structure commercial pure titanium, and belongs to the field of commercial pure titanium manufacturing. The method comprises thesteps that homogenized annealing treatment is conducted on the commercial pure titanium with the thickness of 10-15 mm to obtain homogeneous tissues with the average grain size of 70 microns; 80-90%of cold rolling treatment is conducted on the commercial pure titanium to form traditional belt-shaped coll-rolling tissues; incomplete recrystallization annealing cold rolling treatment is conductedon the commercial pure titanium at the temperature of 450-500 DEG C for 5-60 min to finally prepare the non-homogeneous layered-structure commercial pure titanium. Mechanical experiment results show that the commercial pure titanium with the structure has the buckling strength of 550-660 MPa and the tensile strength of 630-750 MPa, particularly the uniform elongation can be greater than or equal to 4%, and the elongation at break can be greater or equal to 15%. The non-homogeneous layered-structure commercial pure titanium has the advantages that the problem of lower commercial pure titanium strength is solved, the non-homogeneous layered-structure commercial pure titanium can be allowed to have better extendability and plasticity, and the strength and plasticity matching performance of the non-homogeneous layered-structure commercial pure titanium is improved to make industrial application production convenient.

Description

technical field [0001] The invention relates to the field of preparation of industrially pure titanium, in particular to a method for preparing industrially pure titanium with a heterogeneous layered structure. Background technique [0002] Due to its high strength and excellent corrosion resistance, titanium and its alloys have the highest specific strength among many metals. Its specific strength is 3.5 times that of stainless steel, 1.3 times that of aluminum alloy matrix, and 1.7 times that of magnesium alloy. The development and development of titanium alloys and the application of titanium in civil industries will increase exponentially, especially in civil fields such as shipbuilding, automobile manufacturing, chemical industry, electronics, marine development, biomedicine, seawater desalination, geothermal power generation, sewage discharge and anticorrosion. Applications. Compared with titanium alloys, pure titanium does not contain Al, V and other harmful elements...

Claims

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Application Information

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IPC IPC(8): C22F1/18C22F1/02
Inventor 雍鹏凌李玉胜黄照文李建生何燕
Owner NANJING UNIV OF SCI & TECH
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