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Low temperature copper solubilities in Fe-Cu-Ni

Miller, M.K., Russell, K.F., Pareige, P.J., Starink, M.J. and Thomson, R.C. (1998) Low temperature copper solubilities in Fe-Cu-Ni Materials Science and Engineering: A, 250, (1), pp. 49-54. (doi:10.1016/S0921-5093(98)00535-8).

Record type: Article

Abstract

An atom probe characterization of the copper concentration in the matrix of a model Fe–1.1at.%Cu–1.4% Ni alloy has been performed after isothermal ageing for various extended times at low temperatures. The matrix copper concentrations from material annealed at 500, 550 and 600°C are approximately 10% lower than the equilibrium values predicted from the Thermocalc™ program with the Kaufman database. Isothermal annealing for 4000 h at either 400 or 300°C was not sufficient to attain the equilibrium copper concentration. The kinetics of copper precipitation was investigated with the Starink-Zahra model derived for nucleation and growth reactions and a good fit with the atom probe data was found for an activation energy of 250 kJ mol?1.

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Published date: 1998
Keywords: solubility, atom probe field ion microscopy, Fe–Cu
Organisations: Engineering Sciences

Identifiers

Local EPrints ID: 21671
URI: http://eprints.soton.ac.uk/id/eprint/21671
ISSN: 0921-5093
PURE UUID: 6c2523ae-c72c-4633-bcd1-12c2a894c64d

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Date deposited: 01 Feb 2007
Last modified: 17 Jul 2017 16:25

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Contributors

Author: M.K. Miller
Author: K.F. Russell
Author: P.J. Pareige
Author: M.J. Starink
Author: R.C. Thomson

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