Nucleation and growth of quasicrystalline Pd--U--Si from the glassy state

Journal Article · Sat Nov 01 04:00:00 EST 1986 · J. Mat. Res.; (United States)

DOI:https://doi.org/10.1557/JMR.1986.0741· OSTI ID:6874053

Drehman, A J; Pelton, A R; Noack, M A

A Pd--U--Si metallic glass transforms upon annealing to a quasicrystalline phase of the same composition. Electron diffraction patterns of this material verify its icosahedral symmetry. Differential scanning calorimetry and transmission electron microscopy are used to obtain both the nucleation and growth kinetics of this glass-to-quasicrystal, first-order phase tranformation. The homogeneous nucleation rate of the quasicrystalline phase in the metallic glass achieves a maximum at a temperture where its growth is still relatively slow.

• Research Organization: Ames Laboratory: USDOE, Iowa State University, Ames, Iowa 50011
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6874053
• Journal Information: J. Mat. Res.; (United States), Journal Name: J. Mat. Res.; (United States) Vol. 1:6; ISSN JMREE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ACTINIDE ALLOYS
ALLOYS
ANNEALING
CALORIMETRY
CRYSTAL GROWTH
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
ELECTRON MICROSCOPY
GRAIN SIZE
HEAT TREATMENTS
METALLIC GLASSES
MICROSCOPY
MICROSTRUCTURE
NUCLEATION
PALLADIUM ALLOYS
PHASE TRANSFORMATIONS
PLATINUM METAL ALLOYS
SILICON ALLOYS
SIZE
TEMPERATURE EFFECTS
TRANSMISSION ELECTRON MICROSCOPY
URANIUM ALLOYS