|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||On the Chemistry-topology-stiffness Relationship of Co-based Metallic Glass Thin Films: A Combinatorial Approach
||Volker Schnabel, Mathias Köhler, Simon Evertz, Jana Michalikova, Jozef Bednarcik, Denis Music, Dierk Raabe, Jochen M. Schneider
|On-Site Speaker (Planned)
An efficient way to study the relationship between chemical composition and mechanical properties of thin films is by utilizing the combinatorial approach. However, for thin film glasses many physical properties including the mechanical properties are affected by topology. Here a novel method is introduced that enables spatially resolved short range order analysis along concentration gradients of combinatorial metallic glass thin films. Through the correlative chemistry-topology-stiffness investigation it is observed that an increase in metalloid concentration from 26.4 to 32.7 at% and the associated formation of localized (hybridized) metal – metalloid bonds induces a 10 % increase in stiffness. Concomitantly, along the same composition gradient a metalloid concentration induced increase in first order metal - metal bond distances of 1 % is observed, which infers itinerant (metallic) bond weakening. Hence, the metalloid concentration induced increase in hybridized bonding dominates the corresponding weakening of metallic bonds.
||Planned: A print-only volume