Naslov
Correlation Between Electronic Structure, Mechanical Properties and Stability of TE-TL Metallic Glasses

Autori
Ristić, Ramir ; Babić, Emil ; Stubičar, Mirko ; Kuršumović, Ahmed

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Frontiers in complex metallic alloys (CMA-Zagreb ’08) : program and abstracts of the Workshop of the European Network of Excellence Complex Metallic Alloys / Smontara, Ana - Zagreb, 2008, 25-25

ISBN
978-953-98955-7-8

Skup
Workshop of the European Network of Exellence Complex Metallic Alloys

Mjesto i datum
Zagreb, Hrvatska, 01.10.2008. - 04.10.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
metallic glasses; mechanical properties; hardness

Sažetak
We show that mechanical properties (stiffness and hardness) of TE - Ni, Cu (TE = Ti, Zr and Hf) amorphous alloys increase approximately linearly with Ni, Cu content, x, over a wide composition range (x  66 at%). This correlates with the observed increase of the Debye temperatures with x and shows that the strength of interatomic bonding increases with x in these alloys. The thermal stability ( e.g. the crystallization and glass transition temperatures) of these alloys also increases with x, thus with increasing interatomic bonding. Since in all these alloys the electronic density of states at the Fermi level, N(EF), decreases linearly with x within the same x-range, a very simple relationship exists between the electronic structure and mechanical and thermal properties. We also estimate the mechanical properties of hypothetic amorphous TEs (by extrapolating the properties of alloys to x = 0) and compare them with those of stable crystalline phases of TEs.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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