一种Mg-Li双相合金EBSD样品的制备方法
By employing low-angle argon ion beam polishing and liquid nitrogen cooling, the problem of difficult resolution of the β-Li phase in Mg-Li dual-phase alloys was solved, achieving efficient EBSD sample preparation and improving the resolution rate.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHONGQING UNIV
- Filing Date
- 2023-07-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing EBSD sample preparation methods are difficult to effectively resolve the β-Li phase in Mg-Li dual-phase alloys, mainly because the β-Li phase is easily oxidized and the stress and strain generated during mechanical polishing lead to blurred or incorrect resolution of the diffraction kikuchi band pattern.
The method employs low-angle argon ion beam polishing combined with liquid nitrogen cooling, consisting of two steps: coarse polishing and fine polishing. By controlling polishing parameters and ambient temperature, the oxidation and stress strain of the β-Li phase are reduced, ensuring rapid testing of the sample under an electron microscope.
The EBSD resolution of the Mg-Li dual-phase alloy sample was improved to 97%, ensuring that the Kikuchi zone pattern of the β-Li phase was clear and resolvable, and reducing oxidation and damage.
Smart Images
Figure CN116879329B_ABST