Changes of mechanical properties and fracture morphology of amorphous tapes involved by heat treatment

Szewieczek, D.; Tyrlik-Held, J.; Lesz, S.

doi:10.1016/s0924-0136(00)00795-0

Cited by 14 publications

(10 citation statements)

References 4 publications

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“…The fracture morphologies show characteristics associated with the nature of fracture ductile amorphous metals. The fracture morphologies reveal characteristics associated with the nature of fracture ductile metal amorphous materials [34,35].…”

Section: Resultsmentioning

confidence: 99%

Study on crystallization phenomenon and thermal stability of binary Ni–Nb amorphous alloy

Lesz

Dercz

2016

J Therm Anal Calorim

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In this paper, a ribbon of binary Ni-Nb amorphous alloy was prepared by the melt spinning technique. Glass transition and crystallization phenomenon of the alloy were investigated by differential scanning calorimetry. Thermal properties of the ribbon of binary Ni-Nb upon heating and cooling were analysed by DTA at a heating/cooling rate of 0.5 K s -1 under the purified argon atmosphere. The thermal stability of Ni-Nb amorphous alloy was studied by using an X-ray diffractometer equipped with an in situ heating system. The structure and fracture morphology of the ribbons were examined by X-ray diffraction and scanning electron microscopy methods.

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Section: Resultsmentioning

confidence: 99%

Study on crystallization phenomenon and thermal stability of binary Ni–Nb amorphous alloy

Lesz

Dercz

2016

J Therm Anal Calorim

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“…10 In Figure 2, SEM images of the surface of an investigated rod and the results obtained with an EDS analysis, are presented. The SEM image of the surface reveals the consequence of an uneven cooling speed during the production process.…”

Section: Resultsmentioning

confidence: 99%

“…This resulted in a repeatable production process for the manufacture of a bulk amorphous alloy Fe 61 Co 10 Ti 4 Y 5 B 20 in the form of a rod with a length of 2 mm and a diameter of 1 mm. 10 On the basis of the structural and microstructural investigations, it can be concluded that regions of a slightly heterogeneous chemical composition occur within the volume of the sample, i.e., locally, the chemical composition varies slightly around the stoichiometric formula. On the surface of the breakthrough, numerous cylindrical šislands' with a high Y content are present (Figure 2g).…”

Section: Discussionmentioning

confidence: 99%

“…These values are comparable to those obtained for FeSi steels used for transformer/inductor cores. However, the FeSi steels exhibit a high magnetostriction compared with the amorphous materials 10 . From the analysis of the high-field Holstein-Primakoff paraprocess, parameter D sp was found, its value indicating a high concentration of magnetic atoms per unit volume, and confirming the high value of the saturation magnetization 11 .…”

Section: Discussionmentioning

confidence: 99%

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Microstructure, magnetic and mechanical properties of the bulk amorphous alloy Fe61Co10Ti4Y5B20

Błoch¹,

Nabiałek²,

Gondro³

2015

Mater. Tehnol.

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This paper presents the results of the studies into the microstructure, the magnetic and mechanical properties of bulk amorphous alloy samples. The samples were produced in the form of rods, using the suction-casting method. The structure and microstructure of the prepared samples were examined using an X-ray diffractometer, a scanning electron microscope and a computer tomograph. The magnetic and mechanical properties were studied using a Lakeshore vibrating-sample magnetometer, a Zwick testing machine and a FutureTech microhardness tester. On the basis of the obtained results, it was found that, throughout their volumes, the investigated rods have an amorphous structure. Using computer tomography, three-dimensional images of the tested samples were reconstructed, enabling the imaging of the material defects occurring throughout the bulk volumes of the samples. Additionally, the tested Fe-based material should be included in the subset of the electrotechnical materials exhibiting good soft magnetic and mechanical properties. In view of their properties, these materials can be successfully used in energy-efficient transformers, replacing the conventional Fe-Si steel in this and other applications. Keywords: bulk amorphous alloys, electron scanning microscopy, computer tomography, saturation magnetization, coercivitŷ lanek predstavlja rezultate {tudija mikrostrukture, magnetnih in mehanskih lastnosti vzorcev masivne amorfne zlitine. Le-ti so bili izdelani v obliki palic z uporabo ulivanja z nasesavanjem. Struktura in mikrostruktura pripravljenih vzorcev je bila preiskovana z rentgenskim difraktometrom, z vrsti~nim elektronskim mikroskopom in z ra~unalni{kim tomografom. Magnetne in mehanske lastnosti so bile preiskovane z magnetometrom z vibrirajo~im vzorcem Lakeshore, s preizkusno napravo Zwick in z merilnikom mikrotrdote FutureTech. Dobljeni rezultati so pokazali, da imajo preiskovane palice po vsem volumnu amorfno strukturo. Z ra~unalni{ko tomografijo so bile pripravljene 3D-slike preiskovanih vzorcev, kar omogo~a ugotavljanje napak v materialu, ki se pojavljajo po vsem volumnu vzorca. Preizku{eni materiali na osnovi`eleza naj bi bili vklju~eni v podskupino materialov za elektrotehniko z dobrimi mehkomagnetnimi in mehanskimi lastnostmi. Glede na njihove lastnosti bi bili lahko ti materiali uspe{no uporabljeni za energijsko u~inkovite transformatorje, kjer bi nadomestili Fe-Si-jekla, in tudi na drugih podro~jih. Klju~ne besede: masivne amorfne zlitine, vrsti~na elektronska mikroskopija, ra~unalni{ka tomografija, nasi~enje magnetenja, koercitivnost

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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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Changes of mechanical properties and fracture morphology of amorphous tapes involved by heat treatment

Cited by 14 publications

References 4 publications

Study on crystallization phenomenon and thermal stability of binary Ni–Nb amorphous alloy

Study on crystallization phenomenon and thermal stability of binary Ni–Nb amorphous alloy

Microstructure, magnetic and mechanical properties of the bulk amorphous alloy Fe61Co10Ti4Y5B20

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

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