Kinetic Study of Crystallization Process in Fe[sub 32]Ni[sub 36]Cr[sub 14]P[sub 12]B[sub 6] Metallic Glass
Copyright policy )Kinetic Study of Crystallization Process in Fe[sub 32]Ni[sub 36]Cr[sub 14]P[sub 12]B[sub 6] Metallic Glass
Kinetics of crystallization process in a Fe‐based metallic glass 2826A (Fe32Ni36Cr14P12B6) has been studied with the help of differential scanning calorimetry(DSC). It is found that the 2826A metallic glass exhibits two overlapping crystallization peaks. The activation energy for crystallization (E) and the Avrami exponent (n) for the two crystallization peaks have been obtained using the Kolmogorov‐Jhonson‐Mehl‐Avrami (KJMA) equation. The so‐obtained values of E and n have been utilized to derive normalized heat flow curves. It has been observed that the theoretical heat flow curves obtained using KJMA equation show large deviations from the experimental curves for the first peak whereas the curves are in very close agreement for the second peak. This suggests that kinetics of crystallization process during the first peak cannot be described correctly in KJMA formalism.
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