In-situ Tensile Compression Total Scattering Measurements

这个博士项目将研究在施加应力条件下的局部结构现象。该项目将涉及对感兴趣的特定材料进行检查，并开发适合在ISIS中子和μ子源的Polaris衍射仪上进行这些测量的现场装置。冶金样品将在谢菲尔德大学制备，包括粉末制造方法，以及通过扫描和透射电子显微镜表征样品。总散射数据将在ISIS中子和μ子源处获得，并在钻石光源处获得补充X射线数据。这些数据的分析将使用RMCProfile和PDFGui进行，并开发定制的分析代码。将对原位和非原位样品进行拉伸试验。

This PhD project will look at examining local structural phenomena under applied stress conditions. This project will involve both the examination of particular materials of interest, and the development of an in-situ rig suitable for performing these measurements on the Polaris diffractometer at the ISIS Neutron and Muon Source. Metallurgical samples will be prepared at the University of Sheffield, including powder manufacturing methods, and characterisation of the samples by scanning and transmission electron microscopy. Total scattering data will be acquired at the ISIS Neutron and Muon source, and complementary X-ray data at the Diamond light source. Analysis of these data will be carried out using RMCProfile and PDFGui, as well as developing bespoke analysis code. Tensile testing will be carried out on samples both in-situ and ex-situ.