Crystallization and thermal stability of the Mg65Cu25-xGd10Agx (x = 0-10) amorphous alloys

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)221-224
Journal / PublicationJournal of Alloys and Compounds
Volume434-435
Online published2 Oct 2006
Publication statusPublished - 31 May 2007
Externally publishedYes

Conference

Title12th International Symposium on Metastable and Nano-Materials (ISMANAM-2005)
LocationMaison de la Chimie
PlaceFrance
CityParis
Period3 - 7 July 2005

Abstract

Mg65Cu25-xGd10Agx (x = 0-10) amorphous alloy ribbons with 0.1 mm thickness were prepared by melt spinning. The thermal properties and microstructure development during the annealing of amorphous alloys have been investigated by the combination of differential scanning calorimetry (DSC), SEM with EDS capability, X-ray diffractometry (XRD) and TEM techniques. The XRD result reveals that all these as-quenched Mg65Cu25-xGd10Agx alloy ribbons exhibit broad diffraction patterns of amorphous phase. A clear Tg (glass transition temperature) and supercooled region (about 40 K) were revealed for all Mg65Cu25-xGd10Agx alloy ribbons. In addition, the single stage crystallization of the Mg65Cu25Gd10 alloy was found to change into three stage crystallization when the Ag element was added. In parallel, the glass transition temperature for the Mg65Cu25-xGd10Agx alloys exhibits an increasing trend with Ag content. However, the crystallization temperature Tx and supercooled region present a decreasing trend with Ag content.

Research Area(s)

  • Amorphous, Crystallization, Thermal property