Mechanical properties of amorphous Fe-based melt spun ribbons with Cr additions

Effect of B, Si and Cr on the mechanical properties of Fe-based amorphous metallic ribbons

“…It can also be assumed an increasing directionality of interatomic forces, which may result in a change in the atomic bond from metallic to covalent [8]. For the present work, the effect of Si on the mechanical properties of FeBSi amorphous alloys resulted in a different sense compared with results reported in [3] for alloy wires, but it is in agreement with those reported recently in amorphous wires [4] and ribbons [7] as well of similar compositions, where it is established that alloys with 7.5 at.% Si and 15 at.% B contents showed higher r TS values than for alloys having 10 at.% Si and 12 at.% B. This behavior can be associated to the tendency of a short range ordering [9], resulted from an enhanced glass forming ability, which in turn leads to a stronger atomic interaction between Fe atoms and metalloids [3,10].…”

“…In the present study, such theory can be applied (for the case of series 3 only) because the Fe content decreases by adding B, and hence, less electrons to the electronic concentration are expected. From this, e/a values were calculated according to the following equation [7]: e=a ¼ ½at.%Feðs þ dÞ Fe þ ½at.%Crðs þ dÞ Cr at.%Fe þ at.%Cr ð1Þ where (s + d) Fe is 8 and (s + d) Cr is 6. Fig.…”

Enhanced soft-magnetic and corrosion properties of Fe-based bulk glassy alloys with improved plasticity through the addition of Cr

“…Meantime, small amounts of Cr have proved to be effective in improving both soft-magnetic properties for amorphous (Fe 1−x Cr x ) z (Si 0.3 B 0.7 ) 100−z (x = 0-0.1, z = 5-83 at.%) and Co-Cr-Fe-Al-Ga-P-B-C glassy alloys, and enhancing corrosion resistance for some Cr-containing BGAs [13][14][15]. The substitution Fe by Cr slightly increases the tensile strength of amorphous Fe 77.5−x Cr x Si 7.5 B 15 (x = 0-8 at.%) melt spun ribbons [16]. Additionally, minor Cr addition has beneficial impact on the GFA of Fe-Mo-Ga-P-C-B-Si glassy alloys [17].…”

Mechanical properties of AISI 316L stainless steels joined with a commercial Ni based amorphous foil

“…10(a) of the fracture sample, it seems that the beginning of the fracture occurred at the SS-316L/ BMF-15m foil interface and subsequently propagated through the MBF-15m foil. Amorphous metallic alloys are characterized to be ductile but they become brittle at their crystallization temperatures and their individual mechanical strengths are lowered as they are heat treated at temperatures higher than their crystallization temperature due to a partial re-crystallization of the glassy structure [11]. In the present study, the increment of working temperatures resulted in the formation of precipitate particles, which in turn could be stress concentrators.…”