Synthesis and stability of L12-Al3Ti by mechanical alloying

Nayak, S. S. ; Murty, B. S. (2004) Synthesis and stability of L12-Al3Ti by mechanical alloying Materials Science and Engineering A, 367 (1-2). pp. 218-224. ISSN 0921-5093

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.msea.2003.09.097

Abstract

The present paper reports the synthesis of nanocrystalline L12-Al3Ti by mechanical alloying (MA) of elemental blends of composition Al67M8Ti25 (M=Cr, Mn, Fe, Co, Ni and Cu). Among all the ternary elements studied, Cu appears to be the best in stabilizing the nanocrystalline L12-Al3Ti phase in the as milled condition. However, the results of annealing in the temperature range of 823-1273 K indicate that the L12-Al3Ti phase is stable up to higher temperature in case of Cr containing alloy in comparison to that containing Cu. The as milled L12-Al3Ti phase does not show the superlattice peaks on even annealing up to 1273 K, which has been attributed to the nanocrystalline nature of the phase and the low relative intensity of superlattice peaks of L12-Al3Ti phase even in the fully ordered structure.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Mechanical Alloying; L12-Al3Ti; Nanocrystalline Materials
ID Code:73830
Deposited On:08 Dec 2011 03:48
Last Modified:08 Dec 2011 03:48

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