Discontinous precipitation in a Cu-12 at.% in alloy

Manna, I. ; Pabi, S. K. ; Gust, W. (1991) Discontinous precipitation in a Cu-12 at.% in alloy Acta Metallurgica et Materialia, 39 (7). pp. 1489-1496. ISSN 0956-7151

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/095671...

Related URL: http://dx.doi.org/10.1016/0956-7151(91)90234-R


The feasibility of discontinuous precipitation from phase boundaries vis-a-vis grain boundaries has been investigated for the first time. Suitable heat treatments with a Cu-12 at.% In alloy produce measurable amounts of peritectic and eutectoid areas in the microstructure prior to discontinous precipitation. It has been demonstrated that the boundary between a supersaturated matrix and a eutectoid colony, under favourable conditions, can initiate discontinuous precipitation in the former. A suitable initiation mechanism from such phase boundaries has been proposed. Detailed kinetic analysis of the precipitation reaction and exhausted comparison with the published data reveal that the matrix/precipitate type phase boundaries are equally capable of undertaking discontinuous precipitation as the grain boundaries.

Item Type:Article
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ID Code:18928
Deposited On:17 Nov 2010 15:28
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