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Photoelectric pulse composite processing method of novel composite microstructure of Ti-6Al-4V alloy

A ti-6al-4v, 1.ti-6al-4v technology, applied in the field of obtaining a new composite microstructure of Ti-6Al-4V alloy, can solve the problem that the hardness and plasticity cannot meet the requirements of industrial applications, the difference in alloy properties, etc. problems, to achieve the effect of improving mechanical properties, reducing oxygen content, and improving performance

Inactive Publication Date: 2015-12-23
LIAONING UNIVERSITY OF TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Even if the microstructure type is consistent, the difference in macroscopic grain size will cause large differences in alloy properties (such as fatigue properties)
At present, researches at home and abroad are carried out by pure electric pulse. After annealing, its hardness and plasticity are not up to the requirements of industrial applications. The performance potential of the alloy is of great significance to further improve its comprehensive performance and expand its application range.

Method used

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  • Photoelectric pulse composite processing method of novel composite microstructure of Ti-6Al-4V alloy
  • Photoelectric pulse composite processing method of novel composite microstructure of Ti-6Al-4V alloy
  • Photoelectric pulse composite processing method of novel composite microstructure of Ti-6Al-4V alloy

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Embodiment 1

[0044] Embodiment 1: The photoelectric pulse current treatment method of Ti-6Al-4V alloy novel composite microstructure is carried out according to the following steps,

[0045] Step 1: Take the Ti-6Al-4V alloy part with a thickness of 1.2mm and cut the tensile sample along the pressing direction with a wire cutting machine. The mass fraction of its chemical composition is Al, 6.08%, V, 5.03%, Fe, 0.35% , C, 0.09%, N, 0.60%, H, 0.018%, O, 0.16%, Ti is composed of β-Ti and α-Ti10%. The dimensions of the tensile sample parts are a=10mm, b=8mm, d=6mm, r=10mm, L=35mm, and are subjected to mechanical polishing and plasma beam thinning treatment.

[0046] Step 2: The pulsed laser 110 is reflected by the total reflection prism 120 to change the direction of light propagation, and then the Gaussian light is converted into flat-top light by the Gaussian flat-top lens 130, and then the beam is expanded by the beam expander 140, and the output is expanded. After beaming, the light impac...

Embodiment 2

[0050] Embodiment 2, step 1: the Ti-6Al-4V alloy part that is 1.2mm in thickness adopts wire cutting machine to cut off tensile sample along the pressing direction, and the mass fraction of its chemical composition is Al, 6.08%, V, 5.03%, Fe, 0.35%, C, 0.09%, N, 0.60%, H, 0.018%, O, 0.16%, Ti is composed of β-Ti and α-Ti10%. The dimensions of the tensile sample parts are a=10mm, b=8mm, d=6mm, r=10mm, L=35mm, and are subjected to mechanical polishing and plasma beam thinning treatment.

[0051] Step 2: The pulsed laser 110 is reflected by the total reflection prism 120 to change the direction of light propagation, and then the Gaussian light is converted into flat-top light by the Gaussian flat-top lens 130, and then the beam is expanded by the beam expander 140, and the output is expanded. After beaming, the light impacts the Ti-6Al-4V alloy sample with energy, so that the three parts B, C, and D of the Ti-6Al-4V alloy sample receive the light evenly. The process parameters ar...

Embodiment 3

[0055] Embodiment 3, step 1: the Ti-6Al-4V alloy part that is 1.2mm in thickness adopts wire cutting machine to cut off tensile sample along the pressing direction, and the mass fraction of its chemical composition is Al, 6.08%, V, 5.03%, Fe, 0.35%, C, 0.09%, N, 0.60%, H, 0.018%, O, 0.16%, Ti is composed of β-Ti and α-Ti10%. The dimensions of the tensile sample parts are a=10mm, b=8mm, d=6mm, r=10mm, L=35mm, and are subjected to mechanical polishing and plasma beam thinning treatment.

[0056] Step 2: The pulsed laser 110 is reflected by the total reflection prism 120 to change the direction of light propagation, and then the Gaussian light is converted into flat-top light by the Gaussian flat-top lens 130, and then the beam is expanded by the beam expander 140, and the output is expanded. After beaming, the light impacts the Ti-6Al-4V alloy sample with energy, so that the three parts B, C, and D of the Ti-6Al-4V alloy sample receive the light evenly. The process parameters ar...

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Abstract

The invention provides a photoelectric pulse composite processing method of a novel composite microstructure of Ti-6Al-4V alloy. Optimization design is conducted on an output light path of a pulse laser, and a pulse impact method and a pulse current processing method can be combined and applied, so that the Ti-6Al-4V alloy mechanical property is improved remarkably. The method includes the steps that firstly, and a laser pulse energy impact method is adopted to change the grain structure of the Ti-6Al-4V alloy; secondly, pulse current processing change is conducted to change the grain structure of the Ti-6Al-4V alloy, the pulse current processing process of the Ti-6Al-4V alloy is completed through the pulse current joule heat effect, the electroplastic effect, the magnetic compression effect and the like; and thirdly, the microstructure type of the material is changed, and brand-new mechanical property is obtained. A vacuum annealing method is adopted, and the oxygen content of a processed Ti-6Al-4V alloy sample is lowered effectively, so that the novel composite microstructure of the Ti-6Al-4V alloy reaches the industrial application level, and the method is significant in material non-traditional machining and material science.

Description

technical field [0001] The invention relates to a method for obtaining a novel composite microstructure of a Ti-6Al-4V alloy, in particular to a photoelectric pulse composite processing method for a novel composite microstructure of a Ti-6Al-4V alloy. Background technique [0002] Titanium alloy has outstanding characteristics such as high strength, oxidation resistance, corrosion resistance and good biocompatibility, and has broad application prospects in aviation, aerospace, national defense, civil, sports and biomedical fields. Ti-6Al-4V is currently the most used titanium alloy, accounting for 95% of the world's titanium alloy processed parts. How to further improve the overall performance of this alloy has always been a hot spot of concern in countries all over the world. Ti-6Al-4V is a typical α+β-type alloy, and its microstructure and grain size are strongly dependent on thermal processing such as casting, forging, and heat treatment. No matter it is used in ordinary...

Claims

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Application Information

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IPC IPC(8): C22F1/18
Inventor 齐锦刚周影张伟王建中王冰刘亮张越
Owner LIAONING UNIVERSITY OF TECHNOLOGY
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