The kinetic glass transition of the Zr46.75Ti8.25Cu7.5Ni10Be27.5 bulk metallic glass former-supercooled liquids on a long time scale
Creators
- 1. W. M. Keck Laboratory of Engineering Materials, California Institute of Technology, Pasadena, California91125 (United States)
Description
Viscosity and enthalpy relaxation from the amorphous state into the supercooled liquid state was investigated in the bulk metallic glass forming Zr46.75Ti8.25Cu7.5Ni10Be27.5 alloy below the calorimetric glass transition. At different temperatures, the viscosities relax into states that obey the same Vogel endash Fulcher endash Tammann relation as the data obtained at higher temperatures in the supercooled liquid. Enthalpy recovery experiments after relaxation in the same temperature range show that the enthalpy of the material reaches values that also corresponds to the supercooled liquid state. The glass relaxes into a metastable supercooled liquid state, if it is observed on a long time scale. Equilibration is possible far below the calorimetric glass transition and very likely even below the isentropic temperature. copyright 1998 American Institute of Physics
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 72
- Journal Issue
- 21
- Journal Page Range
- p. 2695-2697
- ISSN
- 0003-6951
- CODEN
- APPLAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 29048116
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BERYLLIUM ALLOYS; COPPER ALLOYS; ENTHALPY; LIQUID METALS; METALLIC GLASSES; NICKEL ALLOYS; PHASE TRANSFORMATIONS; SPECIFIC HEAT; THERMAL ANALYSIS; TITANIUM ALLOYS; VISCOSITY; ZIRCONIUM ALLOYS
- Descriptors DEC
- ALLOYS; ELEMENTS; FLUIDS; LIQUIDS; METALS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT ALLOYS