相关实验视频

Updated: Jun 8, 2025

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis

Published on: May 10, 2021

使用ED-XRD研究高温合金性能的无容器方法的演示

Frank McKay¹, Kane Bergeron², Amitava Roy³

¹Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.

The Review of scientific instruments

|November 8, 2024

概括

一种使用同步光和能量分散式X射线衍射 (ED-XRD) 的新型静电悬浮方法,可用于增材制造的合金稳定性的快速高温分析. 这种技术揭示了结构和组成的变化,对于开发先进的金属合金至关重要.

科学领域:

材料科学材料科学材料科学
金工业是金工业的一个方面.
晶体学晶体学是指结晶学.

背景情况:

增材制造 (AM) 需要具有可预测的高温稳定性的合金.
在AM合金中评估温度依赖的结构和组成变化至关重要.
现有的稳定性测试方法可能耗时且有限.

研究的目的:

提出一种独特的方法来测试合金的依赖温度的稳定性.
要突出电静电悬浮与能量分散式X射线衍射 (ED-XRD) 结合的优点.
证明该技术在分析相位转换和组成变化的能力.

主要方法:

利用多彩的同步光来进行能量分散式X射线衍射 (ED-XRD).
采用静电悬浮在高温下进行无容器样品处理.
通过光辐射进行同时组合分析并测量热物理性质.

主要成果:

在Ti-6Al-4V.中证明ED-XRD数据用于马氏体相变 (hcp到bcc)
观察到Ni51Cu44Cr5合金在加热时保持fcc结构.
由于高温下铜度降低,发现Ni51Cu44Cr5的晶格常数下降.

结论:

没有容器的静电悬浮ED-XRD方法提供了更快的采集和减少背景噪声等优势.
这种技术非常适合进行相位过渡研究和探测金属合金的组成-加工-结构-特性.
该方法有效地描述了用于增材制造应用的新型合金的稳定性和行为.

更多相关视频

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Published on: August 30, 2024

相关概念视频

$X-ray Diffraction of Biological Samples$ 01:10

X-ray Diffraction of Biological Samples

X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal...