Analytical scanning electron microscope with a micro-mechanical testing device

切姆尼茨理工大学材料科学与工程研究所的研究主要集中在微观结构参数与宏观性能之间的复杂相互关系上。这项提案要求提供资金，以购置一台新的扫描电子显微镜，并配备一个用于微机械测试的现场工具。在材料科学的椅子上，这是特别相关的高强度，超细晶粒金属材料的机械行为的研究产生的严重塑性变形，马氏体相变的结构材料（如钢）和功能材料（例如形状记忆合金），动态过程，如在高速切割或电磁脉冲焊接期间的绝热剪切带形成，或超塑性行为。扫描电子显微镜领域的不同方法也为材料和表面技术，复合材料和材料化合物以及电子显微镜和微观结构分析的成功研究做出了巨大贡献。最近在分析扫描电子显微镜领域的重要改进为基础材料科学主题的研究提供了新的工具（例如，用于表征纳米尺度相和微观结构特征的透射菊池衍射和低kV EDXS）。这些工具目前在该研究所还没有，但它们是未来研究项目的迫切需要。该提案中应用的扫描电子显微镜将大大扩展整个切姆尼茨工业大学在WDXS微量元素高分辨率化学定量方面的方法。此外，它将特别支持微结构特征与微机械性能的原位相关性，因为原位纳米压痕工具将首次在切姆尼茨理工大学进行局部微机械测试，并结合变形，转变或损伤过程的表征。

Research at the Institute of Materials Science and Engineering at TU Chemnitz is strongly focused on the complex interrelations between microstructural parameters and the resulting macroscopic properties. This proposal requests funding for a new scanning electron microscope with an in-situ tool for micromechanical testing. At the Chair of Materials Science, this is particularly relevant for investigations on the mechanical behavior of high-strength, ultra-fine grained metallic materials produced by severe plastic deformation, martensitic phase transformations in structural materials (like steels) and functional materials (such as shape memory alloys), dynamic processes like adiabatic shear band formation during high speed cutting or electro-magnetic pulse welding, or superplastic behavior. Different methods in the field of scanning electron microscopy also considerably contribute to successful research on the micro- and nanoscales at the Chairs of Materials and Surface Technology, Composite Materials and Material Compounds, and Electron Microscopy and Microstructure Analysis. Important improvements made recently in the field of analytical scanning electron microscopy provide new tools (for instance, Transmission Kikuchi Diffraction and low-kV-EDXS for the characterization of nano-scale phases and microstructural features) for the investigation of fundamental materials science topics. These tools are currently not available at the institute, but they are strongly needed for future research projects. The scanning electron microscope applied for with this proposal will considerably extend the methods available at the entire TU Chemnitz in terms of high-resolution chemical quantification of trace elements by WDXS. Moreover, it will particularly support the in-situ correlation of microstructural features with micro-mechanical properties, as the in-situ nanoindentation tool will, for the first time at TU Chemnitz, allow for local micro-mechanical testing in combination with a characterization of deformation, transformation or damage processes.