On the sequence of clustering and ordering in a meltspun Cu–Ti alloy |
| |
Authors: | I S Batra G K Dey U D Kulkarni S Banerjee |
| |
Affiliation: | Materials Science Division, Bhabha Atomic Research Centre Trombay, Mumbai 400085, India |
| |
Abstract: | 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). |
| |
Keywords: | Spinodal decomposition Order/disorder transformations Clustering and ordering Transmission electron microscopy Cu–Ti alloys Phase transformations |
本文献已被 ScienceDirect 等数据库收录! |