Remelting treatment and heredity phenomenon in the formation of Fe78Si9B13 amorphous alloy

Effect of cooling rates on solidification and microstructure of rapidly solidified Mg57Zn37Y6 quasicrystal alloy

“…[31][32][33][34] When the liquid temperature is below a critical temperature (T c ), there are solid-like clusters or short-range orders existed in melt. 35 Icosahedral quasicrystals in Mg-Zn-RE are recognized as Tsai class consisting of four consecutive atomic shells, the third layer of which is icosahedron composed of 12 Y atoms, and the melting of quasicrystals is accompanied with formation of atomic clusters on the surface. 28,36 It is postulated that the short-range atomic clusters can evolve into ISROs with the action of the Y element.…”

On the magnetic anisotropy in Fe78Si9B13 ingots and amorphous ribbons: Orientation aligning of Fe-based phases/clusters

“…3 shows a TEM metallography and the corresponding selected area electron diffraction (SAED) pattern of the V-Ingot sample, showing the dominant phases to be an α-Fe matrix with cI12 structure and Fe 2 B precipitates with tI12 structure, consistent to our earlier work. 22 Since Si atoms always exist in the α-Fe solid solution, 36 this phase is also denoted as α-Fe(Si), and in following texts the α-Fe means the α-Fe (Si). The XRD patterns of both the V-Ingot and H-Ingot samples are shown in Fig.…”

“…For α-Fe(Si), both samples have a higher relative intensity of (200) peak than (211) peak which is different from the standard XRD pattern generated by powder diffraction. XRD mainly detects the lattice planes that are parallel to the sample's surface, thus we consider the (100) plane of α-Fe(Si) and (001) 22 In both V-Ingot and H-Ingot samples, Fe 2 B grains prefer to align their <001> Fe2B directions to RD direction, more accurately to say, the preferred growth direction of Fe 2 B grains during solidification is their <001> Fe2B direction, and it is parallel to radius direction of original cylindrical ingots. And the <100> Fe2B directions of the V-Ingot samples and H-Ingot samples also exhibit similar features.…”

“…It is known that the heredity between melts and solidified glasses/crystals. 22,49 And it is noted that the amorphous ribbons contain short range order of Fe 2 B and α-Fe(Si) type clusters. 50 Thus, we consider that the Fe-Si and Fe-B clusters have similar orientations and easy axes/plane with α-Fe(Si)/Fe 2 B crystalline phases.…”

“…22 By using MOKE and other techniques, the different kinds of atomic clusters and their anisotropy have been found in amorphous ribbons. [23][24][25] Recently, both short-range and medium-range atomic orders have been found in amorphous alloys.…”