TY - GEN
T1 - Analysis of phase decomposition in Al-Zn and Al-Zn-Cu alloys by phase field method
AU - Lopez-Hirata, Victor M.
AU - Avila-Davila, Erika O.
AU - Saucedo-Muñoz, Maribel L.
AU - Villegas-Cardenas, David
AU - Ortiz-Mariscal, Arturo
N1 - Funding Information:
The authors wish to thank financial support from Conacyt and SIP-IPN.
PY - 2015
Y1 - 2015
N2 - The application of phase field method, based on the Cahn-Hilliard equation, was investigated to simulate the early stages of phase decomposition during the isothermal aging of Al-Zn and Al-Zn-Cu alloys. The simulation results indicated that the start of phase decomposition, increase in modulation amplitude, took place during the aging of binary alloys at temperatures of 100-300 °C for times up to 50 h, while the start of phase decomposition occurred during the aging of ternary alloys at temperatures of 400-550 °C for times equal to or longer than 3600 s. This analysis also showed that the morphology of the decomposed phases is irregular and interconnected in both of the aged alloys. Likewise, the equilibrium composition of the decomposed phases for both alloys was in good agreement with the predicted values in the equilibrium phase diagrams.
AB - The application of phase field method, based on the Cahn-Hilliard equation, was investigated to simulate the early stages of phase decomposition during the isothermal aging of Al-Zn and Al-Zn-Cu alloys. The simulation results indicated that the start of phase decomposition, increase in modulation amplitude, took place during the aging of binary alloys at temperatures of 100-300 °C for times up to 50 h, while the start of phase decomposition occurred during the aging of ternary alloys at temperatures of 400-550 °C for times equal to or longer than 3600 s. This analysis also showed that the morphology of the decomposed phases is irregular and interconnected in both of the aged alloys. Likewise, the equilibrium composition of the decomposed phases for both alloys was in good agreement with the predicted values in the equilibrium phase diagrams.
KW - Aging
KW - Al-Zn and Al-Zn-Cu alloys
KW - Phase decomposition
UR - http://www.scopus.com/inward/record.url?scp=84962671960&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:84962671960
T3 - PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
SP - 313
EP - 320
BT - PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
A2 - Chen, Long-Qing
A2 - Militzer, Matthias
A2 - Botton, Gianluigi
A2 - Howe, James
A2 - Sinclair, Chadwick
A2 - Zurob, Hatem
PB - International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
T2 - International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, PTM 2015
Y2 - 28 June 2015 through 3 July 2015
ER -