|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIII
||Mechanical, Thermal and Kinetic Characterization of a Series of Zr-based Bulk Metallic Glasses as a Function of Co-concentration
||Rainer K Wunderlich, Yue Dong, Hans-Jörg Fecht
|On-Site Speaker (Planned)
Bulk metallic glass forming alloys often exhibit a dependence of thermal, mechanical and kinetic properties on minor concentration variations. In the Zr64-xNi10Al7Cu19Cox BMG forming alloy with x=0 to 8.3at% the effect of Co-concentration on the properties of the glassy phase were investigated. An increase of the glass transition temperature as a function of the Co concentration indicated an increase of the bonding strength of the glass corresponding to an increase in Young’s modulus and hardness. The Poisson ratio, =0.380.0, indicated a ductile glass but showed little variation. Nanoindentation creep tests showed a pronounced variation of the characteristic creep constants with the x=2.7 at% Co alloy exhibiting the most ductile properties. The elastic limit exhibited a linear increase from εel=0.19 to εel=0.27 with x=0 to 8.3at%. With the increase in Young’s modulus the 8.3 at% Co glass exhibited the highest reversible storage capability of elastic energy in this alloy series.
||Planned: A print-only volume