In-situ Tensile Compression Total Scattering Measurements

这个博士项目将着眼于在施加应力条件下检查局部结构现象。该项目将包括对感兴趣的特定材料的检查，以及在ISIS中子和介子源的北极星衍射仪上进行这些测量的现场钻机的开发。冶金样品将在谢菲尔德大学制备，包括粉末制造方法，并通过扫描和透射电子显微镜对样品进行表征。在ISIS中子和介子源处获得总散射数据，在Diamond光源处获得互补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。拉伸试验将在原位和非原位样品上进行。

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.