Surface treatment method for improving corrosion resistance of eutectic high-entropy alloy and eutectic high-entropy alloy after treatment
By combining vacuum arc melting and ultrasonic impact with solution treatment and aging, the selective corrosion problem of eutectic high-entropy alloys was solved, improving the corrosion resistance and mechanical properties of the material and avoiding surface defects.
Patent Information
- Application Number
- CN202411167385.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2026-03-27
- Estimated Expiration
- 2044-08-23
AI Technical Summary
Eutectic high-entropy alloys suffer from selective corrosion in liquid environments, leading to reduced material lifespan. While existing aging treatments and laser surface remelting methods have improved this, they still exhibit surface defects and performance instability.
As-cast eutectic high-entropy alloys were prepared by vacuum arc melting, followed by pretreatment, ultrasonic impact, and post-treatment, including grinding, degreasing, solution treatment, ultrasonic impact, and aging treatment, to form a fine-grained structure and uniform element distribution, and to eliminate dislocations and residual stress.
It significantly improves the corrosion resistance and mechanical property stability of eutectic high-entropy alloys, eliminates microgalvanic corrosion, and extends the service life of the material.