Microstructural evolution of spinodally formed Fe35Ni15Mn25Al25
Version 2 2024-06-03, 21:03Version 2 2024-06-03, 21:03
Version 1 2015-08-24, 14:37Version 1 2015-08-24, 14:37
journal contribution
posted on 2024-06-03, 21:03authored byI Baker, RK Zheng, DW Saxey, S Kuwano, MW Wittmann, JA Loudis, KS Prasad, Z Liu, Ross MarceauRoss Marceau, PR Munroe, SP Ringer
The microstructural evolution of a b.c.c.-based, spinodally formed alloy Fe35Ni15Mn25Al25 has been studied as a function of annealing time at 550 °C using atom probe tomography and transmission electron microscopy, including energy-filtered imaging. The sizes, crystal structures, orientation relationships and compositions of the phases present were determined as a function of annealing time. The hardness showed complicated behavior as a function of annealing time, consisting of initial hardening, followed by softening and finally, by a rapid hardening behavior. The hardness is controlled both by the coarsening of the spinodally formed phases, and the precipitation and growth of β-Mn structured particles.