Origin of cluster and void structure in melt-quenched Fe-Co-B metallic glasses determined by positron annihilation at low temperatures

2001 ◽  
Vol 64 (1) ◽  
Author(s):  
K. Krištiaková ◽  
P. Švec
Keyword(s):  
Positron Annihilation ◽  
Metallic Glasses ◽  
Low Temperatures ◽  
Void Structure

ULTRASONIC STUDIES OF METALLIC GLASSES AT LOW TEMPERATURES

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-517-C5-521
Author(s):  
G. Park ◽  
A. Hikata ◽  
C. Elbaum
Keyword(s):  
Metallic Glasses ◽  
Low Temperatures

Positron Annihilation in Alkali Halides at Low Temperatures

1986 ◽  
Vol 55 (12) ◽  
pp. 4504-4512 ◽  
Author(s):  
S. Linderoth ◽  
H. Rajainmäki ◽  
H. E. Hansen ◽  
R. M. Nieminen
Keyword(s):  
Positron Annihilation ◽  
Low Temperatures ◽  
Alkali Halides

Crystallization of Al-Gd-La-Ni Metallic Glasses

1999 ◽  
Vol 580 ◽  
Author(s):  
T.K. Croat ◽  
A.K. Gangopadhyay ◽  
K.F. Kelton
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Metallic Glasses ◽  
Low Temperatures ◽  
Alloy Composition ◽  
Composition Range ◽  
Scanning Calorimetry ◽  
Crystallization Sequence ◽  
Transmission Electron ◽  
Kinetics Of

AbstractThe crystallization kinetics of Al-Gd-La-Ni metallic glasses to nanostructured phases are analyzed using differential scanning calorimetry and transmission electron microscopy. In a narrow alloy composition range near Al88Gd6La2Ni4, TEM reveals an amorphous phase separation that occurs upon annealing at low temperatures prior to crystallization. Al-enriched regions, typically 40 nm in diameter, bounded by rare-earth rich regions, are visible. Upon crystallization, α-Al forms preferentially at the interface between these phase separated regions. The relevance of this crystallization sequence to previous work in Al-RE-TM glasses and to the evolution of nanoscale microstructures common in the crystallization of other metallic glasses are discussed.

Positron Annihilation Studies on Co-Si-B and Co-Ni-Si-B Metallic Glasses*

1988 ◽  
Vol 157 (Part_1) ◽  
pp. 325-328
Author(s):  
C. Hidalgo ◽  
M. Vázquez ◽  
S. Linderoth
Keyword(s):  
Positron Annihilation ◽  
Metallic Glasses
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