TY - JOUR
T1 - Transformaciones de fase en aleaciones Zn-22%Al-2%Cu y Zn-22%Al-2%Cu-X (X = 1, 2 y 3%Ag) envejecidas isotérmicamente
AU - Flores-Ramos, Alfredo
AU - Dorantes-Rosales, Héctor J.
AU - López-Hirata, Víctor M.
AU - Hernández-Santiago, Felipe
AU - González-Velázquez, Jorge L.
AU - Torres-Castillo, Alberto A.
AU - Rivas-López, Diego I.
N1 - Publisher Copyright:
© 2014 CSIC.
PY - 2014
Y1 - 2014
N2 - Phase transformations in Zn-22%Al-2%Cu and Zn-22%Al-2%Cu-X (X = 1, 2 and 3%Ag) alloys during aging treatments . The study of phase transformations that take place in Zn-22%Al-2%Cu and Zn-22%Al-2%Cu-X (X = 1, 2 and 3%Ag) alloys was carried out using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Alloys were homogenized at 350 ° C during 10 days and quenched at ∼2 ° C. Subsequently, samples were aged at 200 ° C for different times. The initial microstructure consists in a matrix of fine equiaxial grains of α and η phases for all the alloys. Besides isolated particles of ε and Pdbl; were observed without and with Ag addition, respectively. During the aging, the four phase reaction, α + ε → η + τ', takes place to obtain the equilibrium η, α and τ' phases. However, the Ag addition promotes the formation of the Pdbl; phase, which retards or inhibits the four phase reaction. The stability of the Pdbl; phase is obtained with 3%Ag, which could improve the dimensional stability of the alloy for future industrial applications.
AB - Phase transformations in Zn-22%Al-2%Cu and Zn-22%Al-2%Cu-X (X = 1, 2 and 3%Ag) alloys during aging treatments . The study of phase transformations that take place in Zn-22%Al-2%Cu and Zn-22%Al-2%Cu-X (X = 1, 2 and 3%Ag) alloys was carried out using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). Alloys were homogenized at 350 ° C during 10 days and quenched at ∼2 ° C. Subsequently, samples were aged at 200 ° C for different times. The initial microstructure consists in a matrix of fine equiaxial grains of α and η phases for all the alloys. Besides isolated particles of ε and Pdbl; were observed without and with Ag addition, respectively. During the aging, the four phase reaction, α + ε → η + τ', takes place to obtain the equilibrium η, α and τ' phases. However, the Ag addition promotes the formation of the Pdbl; phase, which retards or inhibits the four phase reaction. The stability of the Pdbl; phase is obtained with 3%Ag, which could improve the dimensional stability of the alloy for future industrial applications.
KW - Ag addition
KW - Four phases reaction
KW - Phase transformations
KW - Precipitation
KW - Zn-Al-Cu alloys
UR - http://www.scopus.com/inward/record.url?scp=84918786036&partnerID=8YFLogxK
U2 - 10.3989/revmetalm.026
DO - 10.3989/revmetalm.026
M3 - Artículo
SN - 0034-8570
VL - 50
SP - e026
JO - Revista de Metalurgia (Madrid)
JF - Revista de Metalurgia (Madrid)
IS - 4
ER -