多重双胞胎的三维网络由几何上必要的无形区域实现
Yajing Song1, Shi Huang2, Bozhao Zhang3
1Center of Electron Microscopy and State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, China.
Nature communications
|November 22, 2025
概括
研究人员在合金中创建了3D多折叠的双胞胎架构,发现了防止双胞胎结合点结晶的无形区域. 这促进了对复杂晶体生长和材料性质定制的理解.
科学领域:
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
- 合金开发 合金开发
背景情况:
- 在晶体中构建3D多折叠双胞胎架构是很困难的,因为角度不合适.
- 对这些结构的晶体生长缺乏现场观测.
- 通过复杂的晶体架构来定制材料特性仍然是一个重大挑战.
研究的目的:
- 在不断增长的多主元素合金中成功创建3D多重叠双胞胎架构.
- 调查化学异质性在激活多重生系统中的作用.
- 在这些复杂的建筑中识别和描述新的结构特征.
主要方法:
- 在现场传输电子显微镜 (TEM) 加热实验.
- 原子电子断层扫描 (AET). 原子电子断层扫描.
- 对FeCoNiCuZn和其他多主元素合金的分析.
主要成果:
- 在不断增长的合金中,成功地制造了具有多元多折双胞胎的3D架构.
- 观察到化学成分的不均性导致不同的双断层能量,激活多个双胞胎系统.
- 在双结处发现了几何学上必要的无形区域,适应不适合并防止点附近的结晶.
结论:
- 在3D多重折叠双胞胎架构中,在容纳大型不合适者方面,几何上必要的无形区域起着至关重要的作用.
- 这些无形区域即使在高温下也防止结晶,为材料稳定提供了新的见解.
- 这些发现为设计具有定制性质的先进材料提供了一条途径,通过受控的复杂生.
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