Influence of structure on the evolution of magnetic and mechanical properties of amorphous and nanocrystalline Fe85.4Hf1.4B13.2 alloy

Szewieczek, D.; Lesz, S.

doi:10.1016/j.jmatprotec.2005.02.017

Cited by 16 publications

(12 citation statements)

References 21 publications

(22 reference statements)

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“…In this case, the fracture surface morphology exhibits a characteristic ''vein'' or ''river'' pattern. In contrast, brittle fracture is reflected as a relatively smooth fracture morphology [14,17]. A major drawback, which hinders the application potential, is the lack of plasticity metallic glasses [18,19].…”

Section: Deformation Mechanisms and Fracture Of Ni-based Metallic Glamentioning

confidence: 99%

Deformation Mechanisms and Fracture of Ni-Based Metallic Glasses

Lesz¹,

Griner²,

Nowosielski³

2016

Archives of Metallurgy and Materials

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The cracking of materials and fracture surface is of great practical and academic importance. Over the last few years the development of the fractography of crystalline alloys resulted in a useful tool for the prediction or failure analysis. Many attempts have been made to observe cracks using optical microscopy, X-ray topography and transmission electron microscopy (TEM). Of these techniques, the resolution of optical microscopy and X-ray topography is too poor. By contrast, the resolution of TEM is high enough for detailed information to be obtained. However, in order to apply TEM observations, a thin foil specimen must be prepared, and it is usually extremely difficult to prepare such a specimen from a pre-selected region containing a crack. In the present work, deformation mechanisms fracture surfaces of Ni-based metallic glass samples have been studied by specially designed experiments. In order to study the deformation mechanisms and fracture the Ni-based metallic glasses have been investigated in the tensile test. The structure and fracture surfaces after the decohesion process in tensile tests were observed using transmission electron microscope (TEM) and scanning electron microscope (SEM), respectively. The studies of structure were performed on thin foils. Moreover the investigated tape was subjected to a banding test. Then, the tape was straightened and the thin foil from the area of maximum strain was prepared. This thin foil sample was deformed before the TEM investigation to obtain local tears.

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Section: Deformation Mechanisms and Fracture Of Ni-based Metallic Glamentioning

confidence: 99%

Deformation Mechanisms and Fracture of Ni-Based Metallic Glasses

Lesz¹,

Griner²,

Nowosielski³

2016

Archives of Metallurgy and Materials

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“…In addition these materials demonstrate almost zero magnetostriction and, depending on the chemical composition, relatively high saturation magnetization. Another group of materials which can be successfully used in electrotechnics are the nanocrystalline alloys, manufactured from amorphous alloys by a proper heat treatment [16][17][18][19][20]. However, it is not always the case, that introducing tiny crystalline grains of nanometric size into amorphous solid positively affects its magnetic properties, and in particular magnetostriction phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Effect of structural relaxations within the amorphous structure on the magnetic properties of amorphous tapes from FeCoB family

Szota

2017

Archives of Metallurgy and Materials

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The paper presents the research results for the Fe 78 Co 2 Si 9 B 11 amorphous alloy, and after the process of annealing resulting only in the relaxation of the material. The structure relaxations occurring in the volume of test samples lead to the changes in their magnetic and mechanic properties. Therefore the studies on the effect of the structure defects on the properties of these type of materials are important. Understanding the processes occurring during the magnetizing of amorphous alloys can be helpful in the design of modern functional materials for special purposes. The main purpose of this elaboration was to determine the effect of the amorphous structure defects in the state after solidification and after heat treatment on the changes in the magnetizing process and in such parameters as the saturation magnetization and the coercivity field.

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“…The changes in the structure and magnetic properties, occurring as a result of a different cooling speed being used during the production process, are visible even without crystalline grains being present in the amorphous matrix. A further improvement in the functional parameters of the alloys could be achieved by their controlled crystallisation [7]. Unfortunately, additional stages of thermal * corresponding author; e-mail: nmarcell@wp.pl treatment increase the final cost of functional materials.…”

Section: Introductionmentioning

confidence: 99%

Influences of Production Method and Minor Chemical Composition Changes on the Microstructure of the Alloy: Fe_62-xCo₁₀Y₈Mo_xB₂₀ (where x=1 or 2)

Nabiałek

Garus

2016

Acta Phys. Pol. A

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In this work, the results of studies concerning the structure of polycrystalline and amorphous alloys are presented. The samples were produced in a single-step production process, using two different production methods, and under a protective argon atmosphere. The quenching speed of the molten alloy was different for each of the production methods. Samples were subjected to analysis using X-ray diffractometry, scanning electron microscopy, and computer tomography. It has been shown that the samples manufactured with a higher cooling rate feature an amorphous structure; on the other hand, the samples obtained using the method with the lower cooling speed consist of crystallites of three crystalline phases with sizes of the order of µm. The amorphous samples exhibited a varied fracture surface as well as an increase in the contribution of pores to their volume, in comparison to the samples obtained at the lower cooling speed.

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Influence of structure on the evolution of magnetic and mechanical properties of amorphous and nanocrystalline Fe85.4Hf1.4B13.2 alloy

Cited by 16 publications

References 21 publications

Deformation Mechanisms and Fracture of Ni-Based Metallic Glasses

Deformation Mechanisms and Fracture of Ni-Based Metallic Glasses

Effect of structural relaxations within the amorphous structure on the magnetic properties of amorphous tapes from FeCoB family

Influences of Production Method and Minor Chemical Composition Changes on the Microstructure of the Alloy: Fe_62-xCo₁₀Y₈Mo_xB₂₀ (where x=1 or 2)

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Influence of structure on the evolution of magnetic and mechanical properties of amorphous and nanocrystalline Fe85.4Hf1.4B13.2 alloy

Cited by 16 publications

References 21 publications

Deformation Mechanisms and Fracture of Ni-Based Metallic Glasses

Deformation Mechanisms and Fracture of Ni-Based Metallic Glasses

Effect of structural relaxations within the amorphous structure on the magnetic properties of amorphous tapes from FeCoB family

Influences of Production Method and Minor Chemical Composition Changes on the Microstructure of the Alloy: Fe62-xCo10Y8MoxB20 (where x=1 or 2)

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Influences of Production Method and Minor Chemical Composition Changes on the Microstructure of the Alloy: Fe_62-xCo₁₀Y₈Mo_xB₂₀ (where x=1 or 2)