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A Laser Combined Processing Technology for Obtaining Wear-resistant and Corrosion-resistant Titanium Alloy Workpieces

A combined processing and titanium alloy technology, which is applied in the coating process and coating of metal materials, can solve the problems of application constraints, poor wear resistance and corrosion resistance, and easy peeling, so as to stabilize the internal structure and size and improve wear resistance. Corrosion, the effect of improving corrosion resistance

Active Publication Date: 2020-01-24
JIANGSU UNIV
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  • Claims
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Problems solved by technology

Titanium alloy is mainly used to make aircraft engine compressor parts, followed by structural parts of rockets, missiles and high-speed aircraft. It is a commonly used structural material. However, its own weaknesses such as low hardness and poor wear and corrosion resistance are largely It limits the performance of titanium alloys and greatly restricts their applications
[0003] In order to improve the properties of titanium alloys, traditional surface strengthening methods generally use metal surface coatings to improve their strength, hardness, and wear resistance. The bonding strength between them is low, it is easy to peel off, and the expected effect cannot be achieved

Method used

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  • A Laser Combined Processing Technology for Obtaining Wear-resistant and Corrosion-resistant Titanium Alloy Workpieces
  • A Laser Combined Processing Technology for Obtaining Wear-resistant and Corrosion-resistant Titanium Alloy Workpieces

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Embodiment

[0024] Ti-6AL-4V was selected as the research object, and Ti-6AL-4V was made into a block sample of 50mm×50mm×6mm. The sample to be treated was placed in an alcohol solution and the dust and oil stains on the surface were removed by an ultrasonic cleaner.

[0025] Put the Ti-6AL-4V sample into a box-type resistance furnace SX2 10 12 for preheating (the phase transition temperature of Ti-6Al-4V is 998°C), and set the heating temperature to 900°C.

[0026] Take out the Ti-6AL-4V sample heated to 900°C and install it on the loading platform 6 of the laser shock device. The center of the laser beam spot coincides with the upper left corner of the surface to be impacted on the substrate as the starting position of the impact strengthening treatment, and the The X-axis and Y-axis directions of the area to be impacted are consistent with the X-axis and Y-axis directions of the loading platform.

[0027] Set the output power and light spot parameters of the continuous DL HL T5000 carb...

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Abstract

The invention relates to the field of laser processing materialogy, in particular to a laser combination machining technology for obtaining a wear-resistant corrosion-resistant titanium alloy workpiece. The laser combination machining technology comprises the following steps: at first, preheating a titanium alloy matrix, wherein the preheating temperature is lower than the phase-transition temperature of titanium alloy; then, adopting a carbon dioxide laser to carryout lap joint scanning on the surface of the titanium alloy workpiece, immediately spraying nanoscale (150-300 nm) alloy powder in a laser radiating area, and after cooling, polishing the surface of a sample; and finally, adopting room temperature laser shock to improve the wear resistance and corrosion resistance of titanium alloy.

Description

technical field [0001] The invention relates to the fields of laser processing and material science, in particular to a combined laser processing technology for obtaining wear-resistant and corrosion-resistant titanium alloy workpieces. First, preheat the titanium alloy substrate, the preheating temperature is lower than the phase transition temperature of the titanium alloy, and then use the carbon dioxide laser to overlap and scan the surface of the titanium alloy component, and then immediately spray nano-scale (150-300nm) alloy powder in the laser radiation area After cooling, the surface of the sample is ground and polished, and then the room temperature laser shock is used to improve the wear resistance and corrosion resistance of the titanium alloy. Background technique [0002] Titanium is an important structural metal developed in the 1950s. Titanium alloys are widely used in various fields because of their high strength, good corrosion resistance, and high heat res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C21D10/00
CPCC21D10/005C23C24/106
Inventor 罗开玉尹叶芳鲁金忠张文泉
Owner JIANGSU UNIV
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