|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Multiscale Architectured Materials (MAM II): Tailoring Mechanical Incompatibility for Superior Properties
||Surface Gradient Architectured Materials Processed by Severe Plastic Deformation via Surface Abrasion Torsion
||Ji Hyun Moon, Ho Yong Um, See Am Lee, Jae Ik Yoon, Jaimyun Jung, Hyoung Seop Kim
|On-Site Speaker (Planned)
||Ji Hyun Moon
Surface gradient architecturing of metallic materials is a potential solution for recovering less ductility of ultrafine grained materials. Bulk ultrafine grained materials are usually produced using severe plastic deformation (SPD). There are various SPD methods, such as equal-channel angular pressing, accumulative roll bonding, high-pressure torsion, and twist extrusion with high imposed strain for grain refinement. Simple torsion can be a SPD process, but stress concentration in the surface of specimens restricts high number of rotation. Therefore, in order to impose high strain in simple torsion, surface abrasion torsion is developed. It is demonstrated that surface gradient architectures can be produced using the proposed surface abrasion torsion. In addition, the mechanical properties of the processed material are systematically analyzed.