|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials
||Effect of Alloying Elements on Age Hardening and Coarsening of Beta Precipitates in Isothermally Aged Fe-Ni-Al Based Alloys
||Victor Manuel Lopez-Hirata, Hector J. Dorantes-Rosales, Maribel Leticia Saucedo-Muñoz, Nicolas Cayetano-Castro, Erika Osiris Avila-Davila
|On-Site Speaker (Planned)
||Victor Manuel Lopez-Hirata
An experimental and numerical analyses of the precipitation and coarsening processes were carried out during the isothermal aging at temperatures of 750, 850 and 950 °C for Fe-10at.%Ni-15at.%Al , Fe-10at.%Ni-15at.%Al-1at.%Cr and Fe-10at.%Ni-15at.%Al-1at.%Cu alloys. Thermo-Calc numerical results indicated that the Cu-addition promoted higher volume fraction of Beta´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 to 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.