TY - GEN
T1 - Microstructural simulation of phase decomposition in isothermally aged Cu-Ni alloys
AU - Avila-Davila, E.
AU - Lopez-Hirata, V.
AU - Saucedo-Muñloz, M.
AU - Gonzalez-Velazquez, J.
PY - 2007
Y1 - 2007
N2 - The microstructure simulation of spinodal decomposition was carried out in the aged Cu-Ni alloys, based on a solution of the nonlinear Cahn-Hilliard partial differential equation by the finite difference method. The calculated results were compared with those determined by atom-probe field ion microscope analyses of the solution treated and aged alloys. Both the numerically simulated and experimental results showed a good agreement for the concentration profiles and microstructure in the aged Cu-Ni alloys. A very slow growth kinetics of phase decomposition was observed to occur in this type of alloy. The morphology of decomposed phases consists of an irregular shape with no preferential alignment in any crystallographic direction. The wavelength of composition modulation was determined to be about 2 nm and it remained constant after aging at 573 K for times as long as 8889 h. No phase decomposition was observed to occur for the numerical simulation of aging at temperatures lower than 523 K for a time as long as 1 year.
AB - The microstructure simulation of spinodal decomposition was carried out in the aged Cu-Ni alloys, based on a solution of the nonlinear Cahn-Hilliard partial differential equation by the finite difference method. The calculated results were compared with those determined by atom-probe field ion microscope analyses of the solution treated and aged alloys. Both the numerically simulated and experimental results showed a good agreement for the concentration profiles and microstructure in the aged Cu-Ni alloys. A very slow growth kinetics of phase decomposition was observed to occur in this type of alloy. The morphology of decomposed phases consists of an irregular shape with no preferential alignment in any crystallographic direction. The wavelength of composition modulation was determined to be about 2 nm and it remained constant after aging at 573 K for times as long as 8889 h. No phase decomposition was observed to occur for the numerical simulation of aging at temperatures lower than 523 K for a time as long as 1 year.
KW - Copper-nickel alloys
KW - Microstructural evolution
KW - Numerical simulation
KW - Phase decomposition
UR - http://www.scopus.com/inward/record.url?scp=58349098598&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:58349098598
SN - 9781605601335
T3 - Materials Science and Technology Conference and Exhibition, MS and T'07 - "Exploring Structure, Processing, and Applications Across Multiple Materials Systems"
SP - 1722
EP - 1733
BT - Materials Science and Technology Conference and Exhibition, MS and T'07 - "Exploring Structure, Processing, and Applications Across Multiple Materials Systems"
PB - Materials Science and Technology
T2 - Materials Science and Technology Conference and Exhibition, MS and T'07 - "Exploring Structure, Processing, and Applications Across Multiple Materials Systems"
Y2 - 16 September 2007 through 20 September 2007
ER -