|About this Abstract
||2023 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||An Investigation of Nanomechanical Properties of Nanocrystal Embedded Marginal Metallic Glasses
||Can Okuyucu, Doğuhan Sarıtürk, Mohammad Abboud, Amir Motallebzadeh, Sezer Özerinç, Ilkay Kalay, Yunus Kalay
|On-Site Speaker (Planned)
Nanocrystalline materials have been subjected to considerable research due to the great potential of improving several material properties through grain size refinements. Among various types of nanocrystalline materials, the ones that can be produced by devitrification of metallic glass have recently taken a further interest owing to their impressive mechanical properties. However, the formation of highly localized strain during deformation causes metallic glasses to fail catastrophically after yielding. Metallic glass/nanocrystal composites, on the other hand, have shown improved ductility over monolithic glass. In this respect, we have investigated the microstructural evolution at far-from-equilibrium conditions and revealed mechanical properties of fully amorphous and partially crystalline Al-RE alloys (RE: Sm, Tb) through nanoindentation and micropillar compression. Mechanical properties have been characterized based on the nanocrystal population in melt-spun ribbons and thin-films with various nanocrystal morphologies. HRTEM analysis of the shear band propagation in nanocrystal embedded glassy matrix will be discussed in detail.
||Phase Transformations, Solidification, Aluminum