论文标题
高压扭转变形引起的相变和地层：新材料组合和高级特性
High-Pressure Torsion Deformation Induced Phase Transformations and Formations: New Material Combinations and Advanced Properties
论文作者
论文摘要
在相对较低的同源温度下，重型塑料剪切变形称为高压扭转（HPT）变形，这是一种严重塑性变形（SPD）的一种方法。本文的目的是概述一种新的处理方法，该方法允许通过HPT变形生成创新的亚稳态材料和新型纳米复合材料。起始材料可以是粗粒多相合金，是不同元素粉末的混合物，也可以是多相固体起始材料的任何其他组合。 HPT处理后，可实现的微观结构与机械合金生成的微观结构相似。然而，HPT过程的一个优点是在HPT变形过程中直接获得了不同类型的亚稳态和纳米复合材料的大量样品。可以证明，可以选择具有定制特性的材料，或者换句话说，可以合成不同的材料组合，或者换句话说，可以合成为特定应用而设计的材料。这些新材料的应用领域范围从氢存储到抗材料，再到刺激性的辐射环境。
Heavy plastic shear deformation at relatively low homologous temperatures is called high-pressure torsion (HPT) deformation, which is one method of severe plastic deformation (SPD). The aim of the paper is to give an overview of a new processing approach which permits the generation of innovative metastable materials and novel nanocomposites by HPT deformation. Starting materials can be either coarse-grained multi-phase alloys, a mixture of different elemental powders or any other combination of multiphase solid starting materials. After HPT processing, the achievable microstructures are similar to the ones generated by mechanical alloying. Nevertheless, one advantage of the HPT process is that bulk samples of the different types of metastable materials and nanocomposites are obtained directly during HPT deformation. It will be shown that different material combinations can be selected and materials with tailored properties, or in other words, materials designed for specific applications and the thus required properties, can be synthesized. Areas of application for these new materials range from hydrogen storage to materials resistant to harsh radiation environments.
