|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Bulk Metallic Glasses XIV
||Effect of Sm Micro-alloying on the Mechanical Behavior and Crystallization Kinetics of Cu-Zr-Al BMGs
||Fatih Sikan, Ilkay Kalay, Sezer Ozerinc, Eren Yunus Kalay
|On-Site Speaker (Planned)
The Cu-Zr-Al BMGs show relatively high strength but they tend to deform along thin shear bands which do not allow macroscopic plasticity. Introducing crystalline constituents embedded within the glassy matrix is a promising technique to improve the ductility. In this respect, we have investigated the mechanical properties and crystallization kinetics of Sm micro-alloyed Cu-Zr-Al BMGs. Ingots of (Zr50Cu40Al10)100-xSmx (0 ≤ x ≤ 5, at. %) were produced by arc-melting and subsequently suction-cast into rods with diameters up to 3 mm. The as-solidified and partially crystalline structures were characterized by a combined study of SEM, TEM, APT, XRD and DSC. Mechanical properties and shear band stability of glassy and partially crystalline (Zr50Cu40Al10)100-xSmx (x:0-5) alloys were determined using nanoindentation and macro and micro-pillar compression tests with respect to percent crystallinity. The effect of introducing crystals within the amorphous matrix will be discussed in correlation to sample size.
||Planned: Supplemental Proceedings volume