Abstract
The phase formation of a copper-mold-cast Zr60Ti2Nb6Cu14 Ni9Al9 alloy has been investigated upon cooling from the melt as well as upon annealing of as-cast specimens. The different states of the samples are characterized by X-ray diffraction, optical and electron microscopy, and differential scanning calorimetry. The cooling rate as realized upon copper-mold casting leads to micrometer-sized quasicrystals, which are embedded in a glassy phase. The thermal stability ΔTx of the supercooled liquid state of the glassy phase that forms near to the wall of the copper mold, differs from that of the glassy matrix in the center of the rod due to different compositions of the glassy phase. This is a consequence of the change in local cooling conditions, which affects the phase formation upon solidification as well as the subsequent transformation behavior of the alloy upon constant-rate heating.
Dedicated to Professor Dr. Knut Urban on the occasion of his 65th birthday
Funding statement: The authors would like to thank B. Bartusch, M. Frey, H. Kempe, J. Kühn, B. Opitz, and H. Schulze for technical assistance, W. Gruner, and V. Michel for chemical analysis, and N. Mattern and S. Scudino for helpful discussions
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© 2006 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Editorial
- Professor Dr. Knut Urban 65 Years
- Basic
- Ordering processes and atomic defects in FeCo
- Atomic resolution electron tomography: a dream?
- Electron tomography of microelectronic device interconnects
- Aberration correction in electron microscopy
- Off-axis electron holography: Materials analysis at atomic resolution
- Determination of phases of complex scattering amplitudes and two-particle structure factors by investigating diffractograms of thin amorphous foils
- Prospects of the multislice method for CBED pattern calculation
- Electron energy-loss spectrometry for metals:some thoughts beyond microanalysis
- Quantitative assessment of nanoparticle size distributions from HRTEM images
- Quantitative microstructural and spectroscopic investigation of inversion domain boundaries in sintered zinc oxide ceramics doped with iron oxide
- Structural domains in antiferromagnetic LaFeO3 thin films
- Short-range order of liquid Ti72.3Fe27.7 investigated by a combination of neutron scattering and X-ray diffraction
- Extended interfacial structure between two asymmetrical facets of a Σ = 9 grain boundary in copper
- Dislocation imaging in fcc colloidal single crystals
- Applied
- Omega phase transformation – morphologies and mechanisms
- Mixed (Sr1 − xCax)33Bi24Al48O141 fullerenoids: the defect structure analysed by (S)TEM techniques
- Wetting of aluminium-based complex metallic alloys
- Annealing-induced phase transitions in a Zr–Ti–Nb–Cu–Ni–Al bulk metallic glass matrix composite containing quasicrystalline precipitates
- Special planar defects in the structural complex metallic alloys of Al–Pd–Mn and Al–Ni–Rh
- On the formation of Si nanowires by molecular beam epitaxy
- Self-induced oscillations in Si and other semiconductors
- Growth, interface structure, and magnetic properties of Fe/GaAs and Fe3Si/GaAs hybrid systems
- An investigation of improved titanium/titanium nitride barriers for submicron aluminum-filled contacts by energy-filtered transmission electron microscopy
- Radiation damage during HRTEM studies in pure Al and Al alloys
- Cross-sectional high-resolution transmission electron microscopy at Mo/Si multilayer stacks
- Structural properties of the fiber –matrix interface in carbon-fiber/carbon-matrix composites and interfaces between carbon layers and planar substrates
- Microstructure and properties of surface-treated Timetal 834
- Notifications
- Personal
- Conferences
Articles in the same Issue
- Frontmatter
- Editorial
- Professor Dr. Knut Urban 65 Years
- Basic
- Ordering processes and atomic defects in FeCo
- Atomic resolution electron tomography: a dream?
- Electron tomography of microelectronic device interconnects
- Aberration correction in electron microscopy
- Off-axis electron holography: Materials analysis at atomic resolution
- Determination of phases of complex scattering amplitudes and two-particle structure factors by investigating diffractograms of thin amorphous foils
- Prospects of the multislice method for CBED pattern calculation
- Electron energy-loss spectrometry for metals:some thoughts beyond microanalysis
- Quantitative assessment of nanoparticle size distributions from HRTEM images
- Quantitative microstructural and spectroscopic investigation of inversion domain boundaries in sintered zinc oxide ceramics doped with iron oxide
- Structural domains in antiferromagnetic LaFeO3 thin films
- Short-range order of liquid Ti72.3Fe27.7 investigated by a combination of neutron scattering and X-ray diffraction
- Extended interfacial structure between two asymmetrical facets of a Σ = 9 grain boundary in copper
- Dislocation imaging in fcc colloidal single crystals
- Applied
- Omega phase transformation – morphologies and mechanisms
- Mixed (Sr1 − xCax)33Bi24Al48O141 fullerenoids: the defect structure analysed by (S)TEM techniques
- Wetting of aluminium-based complex metallic alloys
- Annealing-induced phase transitions in a Zr–Ti–Nb–Cu–Ni–Al bulk metallic glass matrix composite containing quasicrystalline precipitates
- Special planar defects in the structural complex metallic alloys of Al–Pd–Mn and Al–Ni–Rh
- On the formation of Si nanowires by molecular beam epitaxy
- Self-induced oscillations in Si and other semiconductors
- Growth, interface structure, and magnetic properties of Fe/GaAs and Fe3Si/GaAs hybrid systems
- An investigation of improved titanium/titanium nitride barriers for submicron aluminum-filled contacts by energy-filtered transmission electron microscopy
- Radiation damage during HRTEM studies in pure Al and Al alloys
- Cross-sectional high-resolution transmission electron microscopy at Mo/Si multilayer stacks
- Structural properties of the fiber –matrix interface in carbon-fiber/carbon-matrix composites and interfaces between carbon layers and planar substrates
- Microstructure and properties of surface-treated Timetal 834
- Notifications
- Personal
- Conferences