Nanocrystal formation, structure and magnetic properties of Fe–Si–B amorphous alloy afterdeformation

Abrosimova, G. E.; Аронин, А. С.; Матвеев, Д. В.; Першина, Е.А.

doi:10.1016/j.matlet.2013.01.092

Cited by 47 publications

(20 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The influence of crystallization on the elastic and mechanical properties of Fe 36 Co 36 B 19.2 Si 4.8 Nb 4 bulk metallic glass was investigated recently [24]. Nanocrystallization is typical for various Fe-based glassy alloys [25,26] and can be used for improving their magnetic properties [2].…”

Section: Introductionmentioning

confidence: 99%

Crystallization behavior of Fe- and Co-based bulk metallic glasses and their glass-forming ability

Louzguine-Luzgin

Базлов

Ketov

et al. 2015

Materials Chemistry and Physics

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Crystallization behavior of Fe- and Co-based bulk metallic glasses and their glass-forming ability

Louzguine-Luzgin

Базлов

Ketov

et al. 2015

Materials Chemistry and Physics

View full text Add to dashboard Cite

“…Severe plastic deformation turned to be the other method, which is effective in view of the nanocrystallization initiation [84,89,102,[109][110][111][112][113]. The use of this method enabled obtaining an amorphous-nanocrystalline structure in alloys where it is not formed under the crystallization by heat treatment [112,113]. The formation of a nanostructure under plastic deformation generally occurs in the zones of plastic deformation localization (shear bands) or in the regions surrounding them.…”

Section: Nanocrystal Formation Under Heating and Deformationmentioning

confidence: 99%

Specific Features of Structure Transformation and Properties of Amorphous-Nanocrystalline Alloys

Аронин

Abrosimova

2020

Metals

View full text Add to dashboard Cite

This work is devoted to a brief overview of the structure and properties of amorphous-nanocrystalline metallic alloys. It presents the current state of studies of the structure evolution of amorphous alloys and the formation of nanoglasses and nanocrystals in metallic glasses. Structural changes occurring during heating and deformation are considered. The transformation of a homogeneous amorphous phase into a heterogeneous phase, the dependence of the scale of inhomogeneities on the component composition, and the conditions of external influences are considered. The crystallization processes of the amorphous phase, such as the homogeneous and heterogeneous nucleation of crystals, are considered. Particular attention is paid to a volume mismatch compensation on the crystallization processes. The effect of changes in the amorphous structure on the forming crystalline structure is shown. The mechanical properties in the structure in and around shear bands are discussed. The possibility of controlling the structure of fully or partially crystallized samples is analyzed for creating new materials with the required physical properties.

show abstract

“…[14] In the past years, it was demonstrated that high-pressure torsion (HPT) can be applied successfully to consolidate amorphous powders or ribbons in bulk samples. [14][15][16][17][18][19][20][21][22][23][24] The effect of strain value on the consolidation of the Ni 56 Zr 18 Ti 13 Al 6 Si 5 Cu 2 amorphous ribbons was studied in previous studies. [18,20] HPT processing at 6 GPa for two full rotations of anvils resulted in the incomplete consolidation of the ribbons in the central part of the HPTdisc, [18,20] while a higher strain (four rotations) led to the formation of fully dense samples.…”

mentioning

confidence: 99%

“…Such a treatment leads to nanocrystallization for some amorphous alloys. [16,21] On the other hand, HPT can promote the structural rejuvenation of the amorphous phase [25][26][27] or the formation of a cluster-type amorphous structure. [28][29][30] Induced structural transformations lead to a transition from heterogeneous, localized to homogeneous deformation [26,31] and even to the emergence of tensile ductility.…”

mentioning

confidence: 99%

Consolidation of the Amorphous Zr₅₀Cu₅₀ Ribbons by High‐Pressure Torsion

et al. 2019

View full text Add to dashboard Cite

High-pressure torsion is used to consolidate the melt-spun Cu 50 Zr 50 amorphous ribbons. The high-pressure torsion processing is conducted varying the strain using different numbers of anvil rotations. Optical microscopy (OM) and transmission electron microscopy (TEM), X-ray diffraction (XRD) are used to study the effect of processing regimes on consolidation and structural changes. Oxide layers, which are present on the surface of the initial amorphous ribbons, hinder the consolidation of ribbons into fully dense samples. Individual ribbons are clearly observed in the central region of the specimen deformed for one rotation, whereas the edge regions look more consolidated due to the strain gradient along the radius during processing. An increase in strain (by increasing the number of rotations) improves the homogeneity of the consolidated samples. The high-pressure torsion processing for ten rotations leads to the formation of dense samples with a minor concentration of small crack-like defects in the central region. Apparently, the oxides become refined and are distributed in the matrix predominantly in the form of fine particles. Possibly, there is also some dissolution of surface oxides with the formation of a solid solution of oxygen in the amorphous metallic matrix. Amorphous Cu-Zr ribbons are known from the early 1980s. [1] Interest in the study of this system was also caused by the discovery of Cu-Zr in form of bulk metallic glasses (BMGs). [2-5] Cu-Zr BMGs and multicomponent BMGs based on Cu-Zr with minor additions of Al, Ag, Hf, and Zn or rare earth elements arouse a great scientific interest due to their high yield strength, large elastic strain limits, large compressive plasticity, and high corrosion resistance, which make them promising candidates for widespread structural applications. [6-12] Despite a high glass-forming ability of multicomponent BMGs based on Cu-Zr, Cu x Zr 1Àx binary alloy can be cast into fully glassy rods with a diameter of not more than 2 mm. [4] It is easier to produce a homogeneous amorphous state in the Zr 50 Cu 50 alloy by melt spinning, resulting in thin ribbons. Methods of consolidation can be used to overcome this limitation.

show abstract

Nanocrystal formation, structure and magnetic properties of Fe–Si–B amorphous alloy afterdeformation

Cited by 47 publications

References 5 publications

Crystallization behavior of Fe- and Co-based bulk metallic glasses and their glass-forming ability

Crystallization behavior of Fe- and Co-based bulk metallic glasses and their glass-forming ability

Specific Features of Structure Transformation and Properties of Amorphous-Nanocrystalline Alloys

Consolidation of the Amorphous Zr₅₀Cu₅₀ Ribbons by High‐Pressure Torsion

Contact Info

Product

Resources

About

Nanocrystal formation, structure and magnetic properties of Fe–Si–B amorphous alloy afterdeformation

Cited by 47 publications

References 5 publications

Crystallization behavior of Fe- and Co-based bulk metallic glasses and their glass-forming ability

Crystallization behavior of Fe- and Co-based bulk metallic glasses and their glass-forming ability

Specific Features of Structure Transformation and Properties of Amorphous-Nanocrystalline Alloys

Consolidation of the Amorphous Zr50Cu50 Ribbons by High‐Pressure Torsion

Contact Info

Product

Resources

About

Consolidation of the Amorphous Zr₅₀Cu₅₀ Ribbons by High‐Pressure Torsion