Crystallisation of Amorphous Y rm_{50}Cu_{42}Al_8 Alloy

• Authors: B. Idzikowski , Z. Śniadecki , B. Mielniczuk
• Languages of publication: EN

Abstracts

EN

Amorphous Y_{50}Cu_{42}Al_8 ribbon was prepared by melt-spinning technique on the Cu wheel. The crystallisation process was analysed by differential scanning calorimetry and X-ray diffraction. Differential scanning calorimetry curves characterising two crystallisation stages of Y_{50}Cu_{42}Al_8 alloy were measured in non-isothermal dynamic mode at different heating rates. Activation energies of both steps of crystallisation process were acquired by the Kissinger method and are equal to 570± 56 and 290±29 kJ/mol for the first and second stage, respectively. By annealing the ribbon at a given temperature for various times the nanocrystalline phase grains of the sizes of about 40 nm in diameter were created. The influence of the annealing temperature on the grain size evolution was also examined.

Keywords

EN

61.43.Dq; 61.82.Bg; 81.07.Bc; 81.70.Pg

Discipline

• 61.82.Bg: Metals and alloys
• 81.07.Bc: Nanocrystalline materials
• 81.70.Pg: Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis
• 61.43.Dq: Amorphous semiconductors, metals, and alloys

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 147-149

Dates

published

2009-01

Contributors

author

B. Idzikowski

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

Z. Śniadecki

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

B. Mielniczuk

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.115.147