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A kind of preparation method of heterogeneous layered structure industrial 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 the problems that cannot meet the needs of industrial production.

Active Publication Date: 2021-06-08
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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  • A kind of preparation method of heterogeneous layered structure industrial pure titanium
  • A kind of preparation method of heterogeneous layered structure industrial pure titanium
  • A kind of preparation method of heterogeneous layered structure industrial pure titanium

Examples

Experimental program
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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 method for preparing industrially pure titanium with a heterogeneous layered structure, belonging to the field of industrially pure titanium manufacturing. In this method, the industrial pure titanium with a thickness of 10-15 mm is first homogenized and annealed to obtain a uniform structure with an average grain size of 70 μm; then it is subjected to 80-90% cold rolling to form a traditional strip-shaped cold-rolled structure ; Finally, under the condition of 450-500 ° C, it is subjected to incomplete recrystallization annealing treatment for 5-60 minutes to prepare industrially pure titanium with a heterogeneous layered structure. Mechanical experiment results show that industrially pure titanium with this structure has a yield strength of 550-660 MPa and a tensile strength of 630-750 MPa. It is worth noting that its uniform elongation can be ≥ 4%, and the fracture elongation can be ≥ 15%. This heterogeneous layered structure industrial pure titanium solves the problem of low strength of industrial pure titanium, and at the same time enables it to have good ductility and plasticity, improves the strong-plastic matching performance of industrial pure titanium, and is convenient for industrial application and production.

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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Patent Type & Authority Patents(China)
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