Bhatt, Jatin ; Pabi, S. K. ; Murty , B. S. (2007) Nanoindentation studies on amorphous, nanoquasicrystalline and nanocrystalline Zr80Pt20 and Zr75Pd25 alloys Journal of Nanoscience and Nanotechnology, 7 (2). pp. 658-662. ISSN 1533-4880
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Official URL: http://www.ingentaconnect.com/content/asp/jnn/2007...
Related URL: http://dx.doi.org/10.1166/jnn.2007.118
Abstract
Nanoindentation studies on rapidly solidified Zr80Pt20and Zr75Pd25 binary alloys with nanocrystalline, nanoquasicrystalline, and amorphous microstructures are reported. The results indicate that the hardness and elastic modulus are the highest for a mixture of amorphous and nanoquasicrystalline state among the various microstructures studied. Nanoquasicrystalline phase has high hardness and elastic modulus in comparison to amorphous and nanocrystalline phases. The hardness to modulus ratio is close to 0.1 in both the alloys, irrespective of the phase/phase mixture studied indicating that the bonding in these alloys is of covalent nature. In Zr80Pt20, all the phases/phase mixtures have higher hardness and modulus in comparison to similar microstructures in Zr75Pd25 due to higher bond energies caused by more negative heat of mixing in the former case.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Scientific Publishers. |
| Keywords: | Amorphous; Nanoquasicrystalline; Nanocrystalline; Nanoindentation; Rapid Solidification; Hardness; Modulus |
| ID Code: | 64032 |
| Deposited On: | 04 Oct 2011 08:23 |
| Last Modified: | 04 Oct 2011 08:23 |
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