Low temperature copper solubilities in Fe-Cu-Ni
Low temperature copper solubilities in Fe-Cu-Ni
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.
solubility, atom probe field ion microscopy, Fe–Cu
49-54
Miller, M.K.
5f62b1cb-6070-448a-a373-6afbc58acbad
Russell, K.F.
a5293465-9b5e-4928-af28-413f61944334
Pareige, P.J.
c0c7c7d3-d7c0-4db2-bc0a-dd67579e9a7e
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Thomson, R.C.
8e9ac990-b234-488a-bc4d-1470a63ec93a
1998
Miller, M.K.
5f62b1cb-6070-448a-a373-6afbc58acbad
Russell, K.F.
a5293465-9b5e-4928-af28-413f61944334
Pareige, P.J.
c0c7c7d3-d7c0-4db2-bc0a-dd67579e9a7e
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Thomson, R.C.
8e9ac990-b234-488a-bc4d-1470a63ec93a
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), .
(doi:10.1016/S0921-5093(98)00535-8).
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: 15 Mar 2024 06:31
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Author:
M.K. Miller
Author:
K.F. Russell
Author:
P.J. Pareige
Author:
R.C. Thomson
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