Control of FeAl Composition Produced by SPS Reactive Sintering from Mechanically Activated Powder Mixture

Figure 7

SEM (BSE mode) micrographs showing and comparing microstructure of samples quenched from different temperatures. Temperatures are characteristics of each zone relative to the reaction sequence of FeAl formation determined from the evolutions of the XRD patterns curves (Figure 6).

(a) −450°C 

(b) −600°C

(c) −800°C

(d) −1100°C

(e) −1180°C–1235°C