scholarly journals Determination of accurate theoretical values for thermodynamic properties in bulk metallic glasses

2013 ◽  
Vol 1 (4) ◽  
pp. 293-304 ◽  
Author(s):  
Pei-You Li ◽  
Gang Wang ◽  
Ding Ding ◽  
Jun Shen
Keyword(s):  
Thermodynamic Properties ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses

scholarly journals Corrosion of Biocompatible Mg66+xZn30-xCa4 (x=0.2) Bulk Metallic Glasses

2016 ◽  
Vol 61 (2) ◽  
pp. 807-810 ◽  
Author(s):  
R. Nowosielski ◽  
K. Cesarz-Andraczke ◽  
P. Sakiewicz ◽  
A. Maciej ◽  
A. Jakóbik-Kolon ◽  
...  
Keyword(s):  
Corrosion Rate ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
X Ray Diffraction ◽  
Electrochemical Tests ◽  
Simulated Environment ◽  
Corrosion Studies ◽  
Physiological Fluid

Abstract The aim of this paper was to investigate the corrosion resistance of Mg66Zn30Ca4 and Mg68Zn28Ca4 metallic glasses and evaluate the ability of this amorphous alloy use for medical applications as biodegradable medical implants. Taking into account the amount of Mg, Zn, Ca elements dissolved in multielectrolyte physiological fluid (MPF) from Mg66+xZn30-xCa4 (x=0.2) alloys the daily dose of evolved ions from alloys components was determined. Additional goal of the paper was determination of corrosion rate (Vcorr) and amount of hydrogen evolved from amorphous magnesium alloys in simulated environment of human body fluids during 24h immersion and during electrochemical tests. Corrosion studies were done in the multielectrolyte physiological fluid (MPF) at 37°C. The amount of hydrogen evolved [ml/cm2] and corrosion rate Vcorr [mm/year] of amorphous Mg66Zn30Ca4 and Mg68Zn28Ca4 alloys were compared. The work also presents characterization of Mg-based bulk metallic glasses structure in the form of 2 mm thickness plates. Samples structure was analyzed by means of X-ray diffraction. Fracture and surface morphology of magnesium alloy samples were identified using scanning electron microscopy.

On sample size effects in fracture toughness determination of Bulk Metallic Glasses

2018 ◽  
Vol 202 ◽  
pp. 500-507 ◽  
Author(s):  
D. Geissler ◽  
J. Freudenberger ◽  
H. Wendrock ◽  
M. Zimmermann ◽  
A. Gebert
Keyword(s):  
Fracture Toughness ◽  
Sample Size ◽  
Metallic Glasses ◽  
Size Effects ◽  
Bulk Metallic Glasses

Glass forming ability and thermodynamic properties in novel La-Al-Cu-Co bulk metallic glasses

2015 ◽  
Vol 33 (9) ◽  
pp. 972-976 ◽  
Author(s):  
Peiyou LI ◽  
Fanying MENG ◽  
Yongshan WANG ◽  
Minmin DONG ◽  
Junting SHI ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Glass Forming Ability ◽  
Glass Forming

Elastic properties of Zr-based bulk metallic glasses studied by resonant ultrasound spectroscopy

2007 ◽  
Vol 22 (2) ◽  
pp. 364-367 ◽  
Author(s):  
Zhiying Zhang ◽  
Veerle Keppens ◽  
Peter K. Liaw ◽  
Yoshihiko Yokoyama ◽  
Akihisa Inoue
Keyword(s):  
Mechanical Properties ◽  
Elastic Properties ◽  
Metallic Glasses ◽  
Elastic Moduli ◽  
Accurate Determination ◽  
Bulk Metallic Glasses ◽  
Resonant Ultrasound Spectroscopy ◽  
Resonant Ultrasound ◽  
Longitudinal Modulus

We report measurements of the elastic properties of Zr-based bulk metallic glasses, Zr52.5Cu17.9Ni14.6Al10Ti5, Zr50Cu30Ni10Al10, and Zr50Cu40Al10 between 5 K and 300 K. Both the shear and longitudinal modulus have been measured as a function of temperature, allowing accurate determination of the Poisson’s ratio and the related ratio of bulk modulus to shear modulus, K/G. These data make it possible to assess the influence of the alloy’s composition on the mechanical properties and enable an evaluation of the correlation between the elastic moduli and the ductility of the alloys.

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