Laser welding method of CoCrCuFeNi high-entropy alloy

A technology of laser welding and high-entropy alloys, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as cold cracks, hot cracks, alloy welding difficulties, etc., and achieve high strength and plasticity

Active Publication Date: 2018-11-06
GUIZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect that this new material solves by making it stronger than previous materials while still being able to be easily worked on with ease during manufacturing processes like solder bonding or brazing.

Problems solved by technology

Technological Problem: The technical problem addressed in this patented technology relates to improving the quality of high-entsive metals used for various applications like aircrafts that require strong materials with low weight while maintaining their structural integrity during use.

Method used

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  • Laser welding method of CoCrCuFeNi high-entropy alloy
  • Laser welding method of CoCrCuFeNi high-entropy alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Two pieces of CoCrCuFeNi high-entropy alloy with dimensions of 200 × 50 × 3 mm were welded.

[0025] Welding process: Open a V-shaped groove, use acetone to ultrasonically clean it for 30 minutes, apply TiO metal paste 30 μm on the surface of the groove, and dry it naturally for 24 hours before performing laser cladding; the laser cladding power is set to 700W, and the scanning speed is 0.5m / min, circular spot, the diameter of the spot is 1.5mm, the protective gas is argon, and the gas flow rate is set to 10L / min; after cladding, apply TiO metal paste for the second time, with a thickness of 50μm, and dry naturally After 24 hours, laser welding is carried out; the laser power is set to 1200W, the welding speed is set to 0.1m / min, the spot is a circular spot with a diameter of 3mm, the laser cladding protective gas is argon, and the gas flow rate is 13L / min .

[0026] TiO metal paste composition: TiO powder 3g, titanium powder 1g, aluminum powder 1g, diethyl oxalat

Embodiment 2

[0029] Welding of two CoCrCuFeNi high-entropy alloys with dimensions of 400×10×3 and 200×10×3 mm;

[0030] Welding process: open a V-shaped groove, use acetone to ultrasonically clean it for 30 minutes, apply TiO metal paste 50 μm on the surface of the groove, and dry it naturally for 24 hours before performing laser cladding; the laser cladding power is set to 1000W, and the scanning speed is 0.3m / min, circular spot, the diameter of the spot is 2mm, the protective gas is argon, and the gas flow rate is set to 15L / min; after cladding, apply TiO metal paste for the second time, with a thickness of 40μm, and dry it naturally for 24 Hours later, laser welding was performed; the laser power was set to 1200W, the welding speed was set to 0.1m / min, the spot was a circular spot with a diameter of 3mm, the laser cladding protective gas was argon, and the gas flow rate was 13L / min.

[0031] TiO metal slurry composition: TiO powder 5g, titanium powder 0.6g, aluminum powder 0.7g, di

Embodiment 3

[0033] Welding of two CoCrCuFeNi high-entropy alloys with dimensions of 800×100×3 and 20×100×3 mm;

[0034] Welding process: Open a V-shaped groove, use acetone to ultrasonically clean it for 30 minutes, apply TiO metal paste 10 μm on the surface of the groove, and dry it naturally for 24 hours before performing laser cladding; the laser cladding power is set to 2500W, and the scanning speed is 0.4m / min, circular spot, the diameter of the spot is 1.5mm, the protective gas is argon, and the gas flow rate is set to 25L / min; after cladding, apply TiO metal paste for the second time, with a thickness of 80μm, and dry naturally After 24 hours, laser welding is carried out; the laser power is set to 1200W, the welding speed is set to 0.1m / min, the spot is a circular spot with a diameter of 3mm, the laser cladding protective gas is argon, and the gas flow rate is 13L / min .

[0035] TiO metal paste composition: TiO powder 2.5g, titanium powder 0.9g, aluminum powder 0.9g, diethyl

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Abstract

The invention discloses a laser welding method of a CoCrCuFeNi high-entropy alloy. The laser welding method of the CoCrCuFeNi high-entropy alloy is characterized in that an alloy plate is provided with a V-shaped groove, the surface of the welded groove alloy is ultrasonically cleaned for 30 minutes by acetone, then the groove surface is coated with TiO metal slurry for the first time, and after natural drying, the TiO metal slurry arranged on the groove in a coating mode is subjected to laser cladding; and secondary coating of the TiO metal slurry is carried out, after natural drying is carried out, laser welding is carried out, and welding is completed. The welding method can better solve the crack problem in the welding process and improve the welding quality.

Description

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Claims

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Application Information

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Owner GUIZHOU INST OF TECH
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