TY - JOUR
T1 - Effect of alloying elements on age hardening and coarsening of β′ precipitates in isothermally aged Fe–Ni–Al based alloys
AU - Lopez-Hirata, Victor M.
AU - Dorantes-Rosales, Hector J.
AU - Cayetano-Castro, Nicolas
AU - Saucedo-Muñoz, Maribel L.
AU - Villegas-Cardenas, Jose D.
N1 - Publisher Copyright:
© The Minerals, Metals & Materials Society 2020.
PY - 2020
Y1 - 2020
N2 - Precipitation and coarsening processes of Fe-10 at.% Ni-15 at.% Al, Fe-10 at.% Ni-15 at.% Al-1 at.% Cr, and Fe-10 at.% Ni-15 at.% Al-1 at.% Cu alloys were carried out during isothermal aging at temperatures of 750, 850, and 950 °C using experimental and numerical analysis methods. Thermo-Calc numerical results indicated that the Cu addition promoted higher volume fraction of β′ precipitates, which caused better response to the age hardening than the other two alloys. The coarsening resistance was also detected to be higher for the Cu-containing alloy in comparison with the other alloys because of its lower solubility and volume diffusion in the ferrite matrix. The Cu and Cr alloying elements were observed to be located in the precipitate and matrix, respectively, according to their expected thermodynamic behavior.
AB - Precipitation and coarsening processes of Fe-10 at.% Ni-15 at.% Al, Fe-10 at.% Ni-15 at.% Al-1 at.% Cr, and Fe-10 at.% Ni-15 at.% Al-1 at.% Cu alloys were carried out during isothermal aging at temperatures of 750, 850, and 950 °C using experimental and numerical analysis methods. Thermo-Calc numerical results indicated that the Cu addition promoted higher volume fraction of β′ precipitates, which caused better response to the age hardening than the other two alloys. The coarsening resistance was also detected to be higher for the Cu-containing alloy in comparison with the other alloys because of its lower solubility and volume diffusion in the ferrite matrix. The Cu and Cr alloying elements were observed to be located in the precipitate and matrix, respectively, according to their expected thermodynamic behavior.
KW - Aging
KW - Cu and Cr additions
KW - Fe-Ni-Al alloys
KW - Thermo-Calc
KW - β precipitation hardening
UR - http://www.scopus.com/inward/record.url?scp=85079175439&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-36628-5_51
DO - 10.1007/978-3-030-36628-5_51
M3 - Artículo
AN - SCOPUS:85079175439
SN - 2367-1181
VL - PartF1
SP - 521
EP - 534
JO - Minerals, Metals and Materials Series
JF - Minerals, Metals and Materials Series
ER -