一种高阻尼高强度中熵合金及其制备方法
By adding Ti to FeCoNi medium-entropy alloys and combining vacuum non-consumable arc melting and magnetic stirring technology, high-damping, high-strength medium-entropy alloys were prepared. This solved the problem of balancing the performance and mechanical properties of damping alloys, achieving a combination of high strength and good damping performance, and broadening the compositional design range of high-entropy alloys.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTHWEST JIAOTONG UNIV
- Filing Date
- 2024-05-24
- Publication Date
- 2026-07-17
AI Technical Summary
Existing damping alloys have difficulty balancing vibration reduction performance and mechanical properties, which limits their application in important manufacturing equipment. Furthermore, high-entropy alloys have complex composition design, are difficult to smelt, and are costly, and their alloy properties are insufficient for engineering applications.
Using FeCoNi medium-entropy alloy as a base, with the addition of an appropriate amount of Ti, and by ensuring homogeneity through vacuum non-consumable arc melting and magnetic stirring, a medium-entropy alloy with Fe: 31.67%, Co: 31.67%, Ni: 31.67%, and Ti: 5% was prepared, simplifying the composition design and improving the damping performance and strength.
A medium-entropy alloy with high damping performance and an internal friction value greater than 0.02 has been obtained. It possesses excellent strength and plasticity, is suitable for medium and high temperature conditions, broadens the design range of high-entropy alloy composition, and provides a functional material that integrates structure and function.
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Figure CN118441192B_ABST