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Method for preparing titanium alloy nanomaterials by warm extrusion of herringbone channel die

A nanomaterial and titanium alloy technology is applied in the field of preparing bulk titanium alloy nanomaterials to achieve the effects of ensuring geometric size and shape accuracy, reducing extrusion load and widening the field.

Active Publication Date: 2017-01-25
福建省诺希科技园发展有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the texture of the material obtained by the above method is streamlined, and the grains after refinement are directional, and are small-angle grain boundaries

Method used

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  • Method for preparing titanium alloy nanomaterials by warm extrusion of herringbone channel die
  • Method for preparing titanium alloy nanomaterials by warm extrusion of herringbone channel die

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Embodiment Construction

[0018] figure 1 It is a schematic diagram of warm extrusion of the herringbone channel die of the present invention: 1. Initial state: put the processed titanium alloy billet into the die cavity of the herringbone channel die; At the beginning of pressing, the mold is warmly extruded through the herringbone channel, and at the same time, the back pressure rod returns to its position when the punch goes up after the back pressure is applied to the billet in the cavity of the horizontal mold channel. Rotate the herringbone channel mold; 3. After the herringbone mold is rotated 120°: the second plastic deformation of the titanium alloy material can be realized.

[0019] figure 2 It is the herringbone channel die warm extrusion die and accessory device of the present invention: 1. Put the processed titanium alloy billet into the cavity of the herringbone channel die; 2. The punch goes down, when the punch and the billet contact extrusion, Warm extrusion is carried out through t...

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Abstract

The invention discloses a method for preparing titanium alloy nano materials through warm extrusion of a herringbone channel mold. The method is characterized in that through the herringbone central axis, the herringbone channel mold is rotated by 120 degrees, and then subsequent-pass extrusion is carried out; repeated plastic deformation of the titanium alloy nano materials can be achieved, and finally, large deformation is accumulated; the nano titanium alloy materials are obtained; in each pass extrusion process, the rotating direction of the herringbone mold is changed, and uniform severe plastic deformation of the titanium alloy can be achieved; and the grain size is uniform, and refined nano grains are equiaxed grains with large grain boundary angles, and the mechanical property of the blocky nano titanium alloy is further improved, and on the premise that the high density is ensured, the high strength and the good toughness are high.

Description

technical field [0001] The invention relates to a new method and mold for preparing bulk titanium alloy nanomaterials, in particular to a lateral continuous extrusion mold with equal cross-section of a herringbone channel mold. Background technique [0002] Titanium is a silver-white transition metal characterized by light weight, high strength, metallic luster, and good corrosion resistance (including seawater, aqua regia, and chlorine gas). Because of its stable chemical properties, good high temperature resistance, low temperature resistance, strong acid resistance, strong alkali resistance, high strength and low density, it is known as "space metal". Among metal elements, titanium has the highest specific strength. It is a strong but low-mass metal that is fairly malleable (especially in the absence of oxygen). The surface of titanium has a silvery white metallic luster. It has a fairly high melting point (over 1,649 degrees Celsius), making it a good refractory metal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/18C22C14/00
Inventor 徐淑波王建飞郑伟
Owner 福建省诺希科技园发展有限公司
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