On the sequence of clustering and ordering in a meltspun Cu-Ti alloy

Batra, I. S. ; Dey, G. K. ; Kulkarni, U. D. ; Banerjee, S. (2003) On the sequence of clustering and ordering in a meltspun Cu-Ti alloy Materials Science and Engineering A, 360 (1-2). pp. 220-227. 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/S0921-5093(03)00440-4


Although it is well established that dilute Cu-Ti alloys with titanium in the range of 2.5-5 wt.% decompose by a spinodal mechanism, the sequence of ordering and clustering processes in the early stages has been a matter of controversy. An attempt has been made in this work to resolve some of the issues by carrying out transmission electron microscopy (TEM) investigations on a dilute meltspun Cu-Ti alloy. Decomposition was studied as a function of ageing over a temperature range of 573-723 K. The results seem to suggest that clustering precedes the formation of long range ordered (LRO) phases in this alloy. Formation of a transitory special point N3M phase was observed for the first time in this work. This disappeared on prolonged ageing giving rise to the metastable Cu4Ti (D1a).

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Spinodal Decomposition; Order/Disorder Transformations; Clustering And Ordering; Transmission Electron Microscopy; Cu-Ti Alloys; Phase Transformations
ID Code:82462
Deposited On:10 Feb 2012 15:34
Last Modified:10 Feb 2012 15:34

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