Publication Date:
2014-08-09
Description:
A study has been carried out into the formation of nanocrystalline grains during high-pressure torsion (HPT) deformation of Zr 65 Cu 17 Ni 5 Al 10 Au 3 bulk alloys prepared using tilt casting. As a preliminary to this, X-ray diffraction (XRD) and differential scanning calorimetry (DSC) analyses were carried out on as-cast Zr 65+ x Cu 17- x Ni 5 Al 10 Au 3 ( x =0~5 at.%) and Zr 65 Cu 20 Ni 5 Al 10 Au 3 alloys, in order to determine the effect on the microstructure of the excess Zr content x and the presence of Au. From the XRD patterns, it was determined that all of the alloys had a metallic glassy nature. For Zr 65 Cu 17 Ni 5 Al 10 Au 3 , the DSC results indicated the presence of a wide supercooled liquid region between the glass transition temperature (T g ) of 644 ...
Print ISSN:
1757-8981
Electronic ISSN:
1757-899X
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
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