ISSN:
1573-4803
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Maschinenbau
Notizen:
Abstract The ferromagnetic resonance technique was used to study the ageing behaviour of the metallic glass Fe32Ni36Cr14P12B6 (Metglas 2826A). The peak-to-peak linewidth was measured for several isothermal annealing times in the temperature range 350 to 375° C. After an initial decrease, attributed to structural relaxation, the linewidth increases linearly with the transformed fraction of the first crystallization phase. For 0.05 〈f〈 0.50, the transformed fraction,f, as a function of time,t, satisfies the Avrami equation with the exponentn being between 1.58 and 1.71. The activation energy for the first crystallization phase is estimated from the times to reach 5 to 40% transformation to be 306 kJ mol−1. The experimental results suggest that the second phase of crystallization begins when the transformed fraction of the first phase is of the order of 50%.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00585725
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