Glass Forming Ability in Amorphous Ti₅₀Cu_35-xNi₁₅Sn_x Alloys Prepared by Mechanical Alloying

Abstract:

in the present study, amorphous ti50cu35-xni15snx (x=0~7) alloy powders were synthesized by mechanical alloying technique. the amorphization behavior of ti50cu28ni15sn7 alloy powders was examined in details by scanning electron microscopy, differential scanning calorimeter, x-ray diffraction, and synchrotron x-ray absorption spectroscopy. the results show that fully amorphous powders formed after 7 hours of milling. The thermal stability of the Ti50Cu35-xNi15Snx amorphous powders was investigated by differential scanning calorimeter. The amorphous Ti50Cu35Ni15 powders (i.e., x=0) exhibit no glass transition behavior. However, the amorphous Ti50Cu35-xNi15Snx (x=3~7) powders were found to exhibit a supercooled liquid region before crystallization. Amorphous Ti50Cu28Ni15Sn7 alloy powders exhibits a wide supercooled liquid region of 61 K.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 3451-3458
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.3451
• Online since: January 2005
• Authors: Chung Kwei Lin, C.C. Hsu, R.R. Jeng, Y.L. Lin, C.H. Yeh, Pee Yew Lee
• Keywords: Amorphisation, EXAFS, Glass Transition, Mechanical Alloying (MA), Supercooled Liquid Region, Ti-Based Alloys

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