|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Characterization of Glassy and Partially Crystalline Cu-Zr-Al-Sm Metallic Glasses
||Fatih Sikan, Ilkay Kalay, 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 glass forming ability and consecutive crystallization behavior of Sm micro-alloyed Cu-Zr-Al based bulk metallic glasses. Ingots of (Zr50Cu40Al10)100-xSmx (0 ≤ x ≤ 5,at. %) were produced by arc-melting and subsequently suction-casted to synthesis metallic glasses with diameters up to 4 mm. The glassy specimens were partially crystallized through isothermal annealing. The as-solidified and partially crystalline structures were characterized by a combined study of SEM, TEM, XRD and DSC. Mechanical properties of glassy and partially crystalline (Zr50Cu40Al10)100-xSmx (x:0-5) alloys were determined using compression and microhardness tests with respect to percent crystallinity. The effect of introducing crystals within the amorphous matrix will be discussed in details.
||Planned: A print-only volume