Metallic glass formation in the Cu47Ti33Zr11Ni8Si1 alloy

TitleMetallic glass formation in the Cu47Ti33Zr11Ni8Si1 alloy
Publication TypeJournal Article
Year of Publication2007
AuthorsVenkataraman S, Bartusch B, Mickel C, Kim KB, Das J, Scudino S, Stoica M, Sordelet DJ, Eckert J
Journal TitleMaterials Science and Engineering a-Structural Materials Properties Microstructure and Processing
Date PublishedJan
Type of ArticleArticle
ISBN Number0921-5093
Accession NumberISI:000243624000034
KeywordsAL ALLOY, BULK AMORPHOUS-ALLOYS, CRYSTALLIZATION, crystallization behavior, CU, DSC, forming ability, mechanical-properties, MELT-SPUN, metallic glasses, PHASE-SEPARATION, short range order, TEM, THERMAL-STABILITY, TI

Phase formation in the CU47Ti33Zr11Ni8Si1 alloy synthesized by various solidification techniques has been studied using X-ray diffraction (XRD). differential scanning calorimetry (DSC) and transmission electron microscopy (TEM) paying, in particular, attention to the TEM sample preparation. While a reduced cooling rate results in a duplex microstructure, consisting of nanocrystals in an amorphous matrix, glass formation is achieved upon employing a faster quenching rate. The difference in composition and quench temperature influence the phase transition upon heating. The essential differences observed in TEM, notwithstanding the ion-milling effects and the different pre-alloy ingots used for metallic glass synthesis, can be linked to differences in the nucleation and growth mechanism which, in turn, is influenced by the chemical short range order (CSRO) obtained upon quenching (c) 2006 Elsevier B.V. All rights reserved.

Alternate JournalMater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process.