Study of crystallization of Y-based metallic glasses by differential scanning calorimetry and neutron diffraction

1987 ◽  
Vol 48 (9) ◽  
pp. 1541-1546 ◽  
Author(s):  
M. Maret ◽  
A. Pasturel
Keyword(s):  
Differential Scanning Calorimetry ◽  
Neutron Diffraction ◽  
Metallic Glasses ◽  
Scanning Calorimetry

Characterization of bulk metallic glasses via fast differential scanning calorimetry

2014 ◽  
Vol 590 ◽  
pp. 84-90 ◽  
Author(s):  
S. Pogatscher ◽  
D. Leutenegger ◽  
A. Hagmann ◽  
P.J. Uggowitzer ◽  
J.F. Löffler
Keyword(s):  
Differential Scanning Calorimetry ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Scanning Calorimetry

scholarly journals Studi Metode Pendinginan Super Cepat untuk Pembentukan Bulk Metallic Glasses pada Paduan Cu45Zr45Al5Ag5

2019 ◽  
Vol 3 (2) ◽  
pp. 10-17
Author(s):  
Andromeda Dwi Laksono ◽  
Rifqi Aulia Tanjung
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Differential Scanning Calorimetry ◽  
Metallic Glasses ◽  
Electron Probe ◽  
Bulk Metallic Glasses ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Energy Dispersion Spectrometer ◽  
Scanning Electron

Bulk Metallic Glass (BMG) memiliki sifat mekanik, magnetik, kimia dan fisik yang berbeda dengan paduan polikristalin karena susunan internal atomnya yang tidak teratur. Sehingga, BMG memiliki kekuatan mekanik yang baik, kekerasan yang tinggi, ketahanan terhadap aus dan korosi yang tinggi, dan kehalusan permukaan yang baik. Berdasarkan sifat tersebut, BMG memiliki kelayakan yang menjanjikan di bidang industry. Dalam penelitian ini, metode pengecoran cetakan di tembaga digunakan untuk menyiapkan BMG paduan Cu45Zr45Al5Ag5. Paduan dileburkan ulang dengan pendinginan super cepat menggunakan mesin pendingin di bawah temperatur -25 oC. Dengan metode pengecoran cetakan di tembaga, sampel ukuran besar berbentuk batang dipotong dengan diameter 2 mm hingga 4 mm dan panjang 30 mm. Batang kemudian dipotong lagi menjadi spesimen berbentuk cakram. Untuk memastikan apakah sampel adalah BMG atau tidak, sampel dievaluasi dengan Scanning Electron Microscopy (SEM), Energy Dispersion Spectrometer (EDS), Differential Scanning Calorimetry (DSC), Electron Probe X-ray Micro Analyzer (EPMA), dan X -ray Difraction (XRD). Hasilnya dibahas dalam penelitian ini. Kata Kunci: Bulk Metallic Glasses, Cu45Zr45Al5Ag5, Pengecoran Cetakan di Tembaga.

Significant Undercooled Liquid Region of Over 200K in Rare Earth Based Metallic Glasses

1998 ◽  
Vol 554 ◽  
Author(s):  
Z. P. Lu ◽  
Y. Li ◽  
S. C. Ng ◽  
Y. P. Feng
Keyword(s):  
Differential Scanning Calorimetry ◽  
Glass Transition ◽  
Rare Earth ◽  
Metallic Glasses ◽  
Liquid Region ◽  
Undercooled Liquid ◽  
Scanning Calorimetry ◽  
Modulated Differential Scanning Calorimetry ◽  
Higher Temperature ◽  
Conventional Dsc

AbstractUsing a newly developed temperature modulated differential scanning calorimetry (TMDSC), glass transition has been detected in several RE-Fe-Al (RE = ND, Pr, Sm and Y) metallic glasses, which can not be observed by a conventional DSC. Our results show that the glass transition occurred together with a small fraction crystallization in the as-spun samples, the final main crystallization transition occurred at higher temperature (over 720K) in these rare-earth based alloys. Large undercooled liquid regions up to 200K at a underlying heating rate of 5K/min have been observed in these glasses.

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