Pressure and heating rate dependence of the crystallization temperature for amorphous (Fe65Ni35)75P16B6Al3 and Ti50Be40Zr10

• The crystallization temperature, Tx, was determined at constant heating rate, R = dṪ/dt ≅ 7 K min−1, by monitoring the electrical resistance. Such experiments were carried out under pressures up to 2.5 GPa, and the resulting dTx/dP was 15.9 K GPa−1 for (Fe65Ni35)75P16B6Al3 and 8.7 K GPa−1, 8.1 K GPa−1 for the two crystallization processes in Ti50Be40Zr10. The activation energies of crystallization under atmospheric pressure were obtained from measurements of Tx at rates from 0.05 K min−1 −55 K min−1, analysed by plotting ln(Tx2R−1) versus Tx−1.

Ämnesord

NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

Nyckelord

High pressure

heating rate

crystallization temperature

crystallization

amorphous alloys

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