Reversible and irreversible processes of structural relaxation and dynamic young modulus behaviour in the Fe40Ni38Mo4B18 amorphous alloy

1985 ◽  
Vol 88 (2) ◽  
pp. 521-527 ◽  
Author(s):  
P. Allia ◽  
E. Bonetti ◽  
E. Evangelista ◽  
L. Turroni ◽  
F. Vinai
Keyword(s):  
Amorphous Alloy ◽  
Structural Relaxation ◽  
Young Modulus ◽  
Irreversible Processes

scholarly journals The effect of temperature and frequency on magnetic properties of the Fe81B13Si4C2 amorphous alloy

2011 ◽  
Vol 43 (2) ◽  
pp. 175-182 ◽  
Author(s):  
S. Djukic ◽  
V. Maricic ◽  
A. Kalezic-Glisovic ◽  
L. Ribic-Zelenovic ◽  
S. Randjic ◽  
...  
Keyword(s):  
Signal Processing ◽  
Magnetic Properties ◽  
Amorphous Alloy ◽  
Frequency Domain ◽  
Magnetic Permeability ◽  
Structural Relaxation ◽  
Substantial Reduction ◽  
Effect Of Temperature ◽  
Influence Of Temperature ◽  
Mean Frequency

In this study it was investigated influence of temperature and frequency on permeability, coercivity and power loses of Fe81B13Si4C2 amorphous alloy. Magnetic permeability measurements performed in nonisothermal and isothermal conditions was confirmed that efficient structural relaxation was occurred at temperature of 663 K. This process was performed in two steps, the first one is kinetic and the second one is diffuse. Activation energies of these processes are: Ea1 = 52.02 kJ/mol for kinetic and Ea2 = 106.9 kJ/mol for diffuse. It was shown that after annealing at 663 K coercivity decrease about 30% and therefore substantial reduction in power loses was attained. Investigated amorphous alloy satisfied the criteria for signal processing devices that work in mean frequency domain.

Investigation of structural relaxation, crystallization process and magnetic properties of the Fe–Ni–Si–B–C amorphous alloy

2006 ◽  
Vol 131 (1-3) ◽  
pp. 45-48 ◽  
Author(s):  
A. Kalezić-Glišović ◽  
L. Novaković ◽  
A. Maričić ◽  
D. Minić ◽  
N. Mitrović
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloy ◽  
Structural Relaxation ◽  
Crystallization Process

Structural relaxation in Ge-Cr-Al-Nd amorphous alloy

2000 ◽  
Vol 42 (3) ◽  
pp. 289-294 ◽  
Author(s):  
D.V Louzguine ◽  
A Inoue ◽  
M Saito ◽  
Y Waseda
Keyword(s):  
Amorphous Alloy ◽  
Structural Relaxation

The study of structural relaxation kinetics in amorphous alloy Fe73.5Nb3Cu1Si13.5B9 using Curie temperature measurements

2004 ◽  
Vol 375-377 ◽  
pp. 683-687 ◽  
Author(s):  
E.V. Kaevitser ◽  
S.D. Kaloshkin ◽  
B.V. Jalnin ◽  
V.V. Tcherdyntsev ◽  
Yu.V. Baldokhin
Keyword(s):  
Amorphous Alloy ◽  
Curie Temperature ◽  
Structural Relaxation ◽  
Temperature Measurements ◽  
Relaxation Kinetics

Creep Modified Structural Relaxation of Fe-Based Amorphous Alloy

2013 ◽  
Vol 586 ◽  
pp. 158-161
Author(s):  
Alena Juríková ◽  
Kornel Csach ◽  
Jozef Miškuf
Keyword(s):  
Amorphous Alloy ◽  
Creep Strain ◽  
Structural Relaxation ◽  
Annealing Temperature ◽  
Amorphous Ribbon ◽  
Recovery Process ◽  
Strain Recovery ◽  
Scanning Calorimetry ◽  
Relaxation Effects ◽  
Deformation Defects

Structural relaxation an creep strain recovery of the amorphous metallic glass Fe40Ni41B19 after the longtime loading at different annealing temperatures below the glass transition temperature have been studied using anisothermal differential scanning calorimetry (DSC) and dilatometry (TMA). It has been demonstrated that structural relaxation effects depend on the stress-annealing temperature of the amorphous ribbon. The influence of the stress-annealing temperature on the rearrangement of deformation defects in the amorphous alloy Fe-Ni-B was analyzed. The properties of local disordering in flow defects were analyzed by means of their activation energy spectra. In the samples stress-annealed at higher temperatures, only the relaxation centers favourably oriented to the external stress contribute to the creep strain recovery process.

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