Dr. Martin Wagner, Full Professor and Chair in Institude of Materials Science and Engineering at TU Chemnitz, Germany, will give a seminar titled "Severe plastic deformation by equal-channel angular pressing - materials science meets process technology" to the interested faculty and students at Discovery Park.

Abstract

Severe plastic deformation of metals and alloys at room temperature can be used to generate ultra-fine grained materials. Equal-Channel Angular Pressing (ECAP) has been established as a suitable method to introduce large amounts of shear strains into billets. Compared to other SPD techniques, ECAP offers some potential for upscaling to industrially relevant length scales, and it also provides cm-sized billets for systematic mechanical testing, texture measurements and microstructural analysis. This presentation will on the one hand focus on microstructural evolution during ECAP of metals and alloys, and on the resulting changes in terms of mechanical behavior and texture, covering examples such as aluminum and magnesium alloys. On the other hand, it will provide information on recent advances in terms of upscaling of the ECAP process, process modification to allow for ECAP of sheet materials, and mechanical modeling of flow lines during the ECAP process.

Biography

Dr. Martin Wagner has been Full Professor, Chair of Materials Science, at TU Chemnitz since early 2010. In 2012, he was also appointed as visiting professor at the Indian Institute of Science in Bangalore. From 2014 to 2017, he was Speaker (i.e., the leading scientist) of a Collaborative Research Center on ultrafine-grained aluminum alloys. Martin Wagner’s teaching contributions cover a wide range of materials science and materials engineering. His research interests are broadly focused on the mechanical behavior of materials on all length scales, especially on the relation between microstructure and properties. The main research topics include fundamental experimental and theoretical work on shape memory alloys, twinning in structural and functional materials, equal-channel angular pressing (ECAP) methods for the production of ultrafine-grained materials, thermo-mechanical treatments of advanced high-strength steels, aluminum-based light-weight materials, dynamic testing, strength and failure of hybrid compounds.