An amorphous / nanocrystalline material heat treatment method based on mponba effect and an amorphous / nanocrystalline material prepared by the method
By employing a multi-step gradient cooling annealing method based on the Mpemba effect, the problems of insufficient atomic relaxation and incomplete release of residual stress in the heat treatment of amorphous/nanocrystalline alloys have been solved, achieving efficient and stable preparation of nanocrystalline materials. This method is applicable to various amorphous systems such as amorphous alloys, polymer glasses, and small molecule glasses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI
- Filing Date
- 2026-03-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing heat treatment processes for amorphous/nanocrystalline alloys suffer from problems such as insufficient atomic relaxation, incomplete release of residual stress, difficulty in refining nanocrystals, sensitivity to temperature windows, and low process efficiency, which affect the consistency of material properties and industrial applications.
A multi-step gradient cooling annealing method based on the Mpemba effect is adopted, including first isothermal annealing and gradient cooling annealing. By activating fast and slow relaxation modes at different temperatures, the energy of the system is reduced rapidly in a stepwise manner. Combined with relaxation process control parameters, it is ensured that atomic relaxation is sufficient and residual stress is completely released, thereby refining the grains.
This significantly improves the efficiency and stability of the heat treatment process, resulting in amorphous/nanocrystalline materials with full atomic relaxation, complete release of residual stress, and fine and uniform grains, meeting the performance requirements of high-end electronic devices.
Smart Images
Figure CN122405941A_ABST