Bulk nano-crystalline Fe-based alloys by annealing bulk glassy precursors

TEM INVESTIGATION ON CRYSTALLIZATION BEHAVIOR OF A Fe68C10.5Si4.4B6.5P8.6Al2 BULK METALLIC GLASS

“…Also, several attempts have been made to improve the macroscopic plasticity by introducing nano-scale crystals [12,13] and micro-scale ductile crystalline phases [14][15][16][17][18] into the amorphous matrix forming so-called BMG composites. Devitrification of BMGs can be a suitable processing route to form BMGs composites.…”

Effect of Y and B content tailoring on the crystallization behavior and corrosion resistance of Fe76-2xY4+xB20+x(x=0 and 2) glassy alloys

“…When tA increase from 5 to 10 min, the decomposition of Fe23B6 phase has finished while decomposition of Fe-B matrix just start. In these two stages, αⅠ phase grow up along with the solute elements Y and B ejecting out and segregating in the remaining amorphous matrix, which causes D increasing and a0 decreasing [1]. Thus, the transitions in a0 and D curves are in fact the start of Fe-B matrix decomposition.…”

“…Recently, the new ternary Fe-Y-B glassy alloys are fabricated which possess high glass forming ability (GFA) and excellent soft magnetic properties as compared with the binary Fe-B amorphous alloys [1,2]. The simple phase component of Fe-Y-B glassy system makes it an attractive base alloy for developing new Fe-based nanocrystalline alloy [3].…”

Bulk nano-crystalline alloys FeYB and CuZrAl by direct casting

“…The method to produce larger sized BNCA samples is urgently desired. Fe-based BNCAs were developed by annealing BMG of FeeCoeBeSieNbeCu (up to 1.5 mm) [19], and in FeeYeBeNbeCu BMG precursors (up to 2 mm) [20].…”