|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||I-47: Strengthening Mechanism of AZ31 Magnesium with Gradient Structure
||Maryam Jamalian, David P. Field
|On-Site Speaker (Planned)
||David P. Field
Gradient structures from nanocrystalline structures in the surface to un-deformed layers cause mechanical incompatibility between different layers, which may lead to superior mechanical properties. The nanocrystalline structure contains nanograins and nanotwins which can be obtained by severe plastic deformation. Shot peening is an effective way of applying severe plastic deformation on the surface of the work-piece for changing the microstructure along the depth. This plastic deformation also leads to formation of mechanical twins for hexagonal close packed (HPC) metals. These structures change mechanical properties that are influenced by the microstructural characteristics. In this study, we investigate the effect of structural modification on AZ31 mechanical properties. Its structure before and after tensile testing are investigated by an optical microscope and field emission scanning electron microscope.