Chemical Short-Range-Ordering Effect on Structural Relaxation in Metallic Glasses

2008 ◽  
Vol 39 (8) ◽  
pp. 1958-1962 ◽  
Author(s):  
Aiwu Zhu ◽  
G.J. Shiflet ◽  
S.J. Poon
Keyword(s):  
Metallic Glasses ◽  
Structural Relaxation ◽  
Short Range ◽  
Short Range Ordering

Relation between icosahedral short-range ordering and plastic deformation in Zr–Nb–Cu–Ni–Al bulk metallic glasses

2011 ◽  
Vol 59 (7) ◽  
pp. 2814-2822 ◽  
Author(s):  
Z.W. Zhu ◽  
L. Gu ◽  
G.Q. Xie ◽  
W. Zhang ◽  
A. Inoue ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Metallic Glasses ◽  
Short Range ◽  
Bulk Metallic Glasses ◽  
Short Range Ordering

Structural Relaxation and Crystallization in a Pd40Cu30Ni10P20 Bulk Metallic Glass

2003 ◽  
Vol 806 ◽  
Author(s):  
R. Raghavan ◽  
U. Ramamurty ◽  
J. Basu ◽  
S. Ranganathan ◽  
N. Nishiyama
Keyword(s):  
Differential Scanning Calorimetry ◽  
Glass Transition ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Structural Relaxation ◽  
Short Range ◽  
Annealing Temperature ◽  
Scanning Calorimetry ◽  
Short Range Ordering ◽  
The Stability

ABSTRACTThe stability of a Pd40Cu30Ni10P20 bulk metallic glass (BMG) against structural relaxation is investigated by isothermal and isochronal annealing heat treatments below and above its glass transition temperature, Tg, for varying periods. Differential scanning calorimetry (DSC) of the annealed samples shows an excess endotherm at Tg, irrespective of the annealing temperature. This recovery peak evolves exponentially with annealing time and is due to the destruction of anneal-induced compositional short range ordering. The alloy exhibits a high resistance to crystallization on annealing below Tg and complex Pd- and Ni-phosphides evolve on annealing above Tg.

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