Metallic Glasses, Quasicrystals and their Nanocomposites

Synthesis and Characterization of Metallic Glasses, Quasicrystalline-Glass Composites in some Zr/Cu-Based Alloys

LAP LAMBERT Academic Publishing (2014-11-03 )

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ISBN-13:: 978-3-659-62088-1
ISBN-10:: 3659620882
EAN:: 9783659620881
Book language:: English
Blurb/Shorttext:: The endeavours made in this book are intended to study the effect of material tailoring on the crystallization behaviour, glass forming ability and structure/microstructure of Zr/Cu-based metallic glasses and nanoquasicrystal-glass composites. The substitution of Ga on Al site in Zr-Al-Cu-Ni alloy affects the nucleation and growth characteristics of quasicrystals and consequently changes the morphology of nanoquasicrystals. A new metallic glass composition; Zr-Ga-Cu-Ni with glass transition temperature (Tg); 614 K has been observed. The addition of Ti destabilizes the glassy phase in (Zr-Al-Cu-Ni)Ti alloys. Formation of single quasicrystalline phase by annealing the glass has been found for the alloys. The size of quasicrystal grain decreases with increase of Ti. Rapidly solidified ribbons of Cu-Ga-Mg-Ti and Cu-Al-Mg-Ti alloys show the formation of γ-brass type phase, which is an approximant of quasicrystals. The Cu-Ga-Mg-Ti alloy display ordered γ-brass structure, whereas Cu-Al-Mg-Ti leads to the formation of amorphous and nanocrystalline disordered bcc γ-brass phase. Electron diffraction patterns have been found to show a close structural similarity with the icosahedral phase.
Publishing house:: LAP LAMBERT Academic Publishing
Website:: https://www.lap-publishing.com/
By (author) :: Devinder Singh, R.S. Tiwari, O.N. Srivastava
Number of pages:: 164
Published on:: 2014-11-03
Stock:: Available
Category:: Physics, astronomy
Price:: 71.90 €
Keywords:: Composites, Quasicrystals, Metallic Glasses