Y effects on magnetic and mechanical properties of Fe-based Fe–Nb–Hf–Y–B bulk glassy alloys with high glass-forming ability

Mechanical properties and structure of rapidly solidified bulk Fe89−xHf4Ta1Cu1Gd1SixB4 (x=0–15) and Fe74Hf4Ta1Cu1Gd1LaySi15−yB4 (y=7) alloys

“…In such cooling conditions, increased solid solubility limit [2,3] and reduced time for nucleation and grain growth are responsible for the formation of unique non-equilibrium structures, leading to outstanding mechanical properties [4]. Some iron-based systems can form bulk metallic glass, such as Fe 73−x Nb 4 Hf 3 Y x B 20 (x = 0-3) [5], Fe 61 Co 10 Me 7 Y 2 B 20 (Me = Y(7), Y(6)Ti (1) or Zr(2.5)Hf(2.5)W(2)) [6] or (Fe 0.61 Co 0.10 Zr 0.025 Hf 0.025 Ti 0.02 W 0.02 B 0.20 ) 100−x Y x (x = 0, 2 or 4) [7,8]. Inoue [9] reports that certain bulk nanocrystalline alloys, as Zr 65 Al 7.5 Ni 10 Cu 7.5 Pd 10 , exhibit even larger compressive and tensile strength as well as ductility than their amorphous counterparts with the same composition.…”

Influence of annealing treatment on soft magnetic properties of Fe76Si10B10Cr2Y2 amorphous ribbon

“…The oxygen content of ribbon could drop from 1250 ppm to 170 ppm as the yttrium additive was higher than 1 at.%, which was beneficial to increase GFA. Few chromium additive would enhance the corrosion resistance and decrease the coercivity, but an excessive amount might influence the GFA either [10,11]. Basing on the above results, the added quantities of yttrium and chromium were 2 at.%.…”

Fe-based glassy alloys with high iron content and high saturation magnetization

“…Although some Fe-based metallic glasses with iron content up to 80 at.% (atom percent) and saturation magnetization up to 1.6 T have ever been fabricated [7,8], the product shape is confined to ribbon-or string-form only owing to the poor glass forming ability (GFA). Glass forming elements such as Y, Mo and Co etc were often utilized to improve the GFA, whereas the substitution of Fe usually decreases the total Fe content of the alloy and then reduces its saturation magnetization [9,10]. But increasing the magnetization, that is increasing the iron content, is very important for application.…”