Udhayabanu, V. ; Ravi, K. R. ; Murugan, K. ; Sivaprahasam, D. ; Murty, B. S. (2011) Development of Ni-Al2O3in-situ nanocomposite by reactive milling and spark plasma sintering Metallurgical and Materials Transactions A, 42A (7). pp. 2085-2093. ISSN 1073-5623
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Official URL: http://www.springerlink.com/content/h57060g68x77x6...
Related URL: http://dx.doi.org/10.1007/s11661-011-0602-6
Abstract
In the present study, Ni-30 vol pct Al2O3 in-situ nanocomposite was developed by reactive milling of NiO-Al-Ni powder mixture followed by spark plasma sintering (SPS). During milling, fcc to hcp transformation was observed in Ni(Al) phase and it transformed back to fcc phase around 773 K (500 °C). The hardness and yield strength of Ni-30 vol pct Al2O3 nanocomposite are approximately two times higher than that of pure Ni of similar grain size. The improved mechanical properties of nanocomposite are attributed to the presence of alumina particles of nanometer size.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The Minerals, Metals & Materials Society. |
| ID Code: | 64010 |
| Deposited On: | 04 Oct 2011 08:45 |
| Last Modified: | 04 Oct 2011 08:45 |
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