X-Y-Z-CrZr series light-weight refractory high-entropy alloy with excellent high-temperature mechanical properties
By employing multi-component ratios and a high-entropy solid solution strengthening mechanism, a lightweight refractory high-entropy alloy based on XYZ-CrZr was prepared. This solved the problems of insufficient strength and thermal softening of lightweight refractory high-entropy alloys at high temperatures, achieving both high-temperature softening resistance and lightweight properties, making it suitable for aerospace and nuclear energy equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HEFEI UNIV OF TECH
- Filing Date
- 2026-05-31
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lightweight refractory high-entropy alloys have insufficient strength at high temperatures, exhibit significant thermal softening, and have poor overall performance matching between high and low temperatures. They are difficult to adapt to complex operating conditions requiring long-term service at extreme high temperatures, and their high material density limits their application in aerospace and other fields.
By rationally combining multiple elements such as aluminum, manganese, molybdenum, titanium, vanadium, chromium, and zirconium, and employing high-entropy solid solution strengthening and fine grain strengthening mechanisms, the microstructure of the alloy is optimized to prepare XYZ-CrZr-based lightweight refractory high-entropy alloys. Low-density metal elements are introduced to improve high-temperature mechanical properties and resistance to thermal softening.
It achieves excellent yield strength in a wide temperature range of 600℃ to 1200℃. The alloy has both low density and high temperature resistance to softening, making it suitable for extreme high temperature service scenarios and improving the performance and lightweight level of aerospace and nuclear energy equipment.
Smart Images
Figure CN122406071A_ABST