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新的动态钻石芯用于时间解析的辐射X射线衍射.
L Q Huston1, L Miyagi2, R J Husband3
1Dynamic Experiments Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
The Review of scientific instruments
|April 17, 2024
概括
带有辐射X射线衍射 (XRD) 的动态钻石芯 (dDAC) 能够在高压缩速率下研究材料强度和变形. 这种设置允许同时进行光学成像,以便详细分析塑料应变和变形机制.
科学领域:
- 材料科学 材料科学 材料科学
- 高压物理 高压物理
- 凝聚物质物理学 凝聚物质物理学
背景情况:
- 动态钻石细胞 (dDAC) 是一种先进的实验工具,用于在极端条件下进行材料分析.
- 研究高应变率的材料对于了解它们在动态环境中的行为至关重要.
研究的目的:
- 描述和验证一个新的辐射X射线衍射 (XRD) 设置,用于动态钻石细胞 (dDAC).
- 为了证明这种设置在高压缩速率下进行现场材料表征的能力.
主要方法:
- 在PETRA III同步仪 (光线线P02.2) 上在dDAC上实现一个辐射XRD几何.
- 收集时间解析的XRD数据,用于,和的样本.
- 在实验期间同时对DAC样品室进行光学成像.
主要成果:
- 在超过300 GPa/s的压缩速率下,成功地描述了材料强度和质地演变的特征.
- 展示了同时使用辐射XRD和光学成像的能力.
- 验证用于研究塑料拉伸和偏差拉伸速率的设置.
结论:
- 描述的辐射XRDdDAC设置在动态压缩下对现场材料性质研究有效.
- 这种技术为探索材料强度和变形机制在中间拉伸率制度中的新机会提供了.
- 结合XRD和光学成像方法,为分析极端条件下的材料行为提供了一种全面的方法.
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