Ordering–disordering phenomena and micro-hardness characteristics of B2 phase in Fe–(5–6.5%)Si alloys

Shin, JS; Bae, JS; Kim, Hyung Jun; Lee, HyuckMo; Lee, Taek Dong; Lavernia, Enrique J.; Zh, Lee

doi:10.1016/j.msea.2005.07.012

Cited by 128 publications

(45 citation statements)

References 23 publications

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“…%) and quenching temperature (950 °C), the sample should not present order. A similar effect has been observed in other works [51] . Three factors may be responsible for this apparent contradiction:…”

Section: Figura 6 Difracción De Neutrones Mostrando Una Débil Reflexsupporting

confidence: 91%

“…They include neutron diffraction experiments showing (111) superlattice reflections for compositions and temperatures where only B2 order is expected [45] . Furthermore, certain ordering was unexpectedly found using TEM in literature, although the authors explained it by silicon segregation to local zones with higher ordering [51] .…”

Section: Figura 6 Difracción De Neutrones Mostrando Una Débil Reflexmentioning

confidence: 94%

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A review of ordering phenomena in iron-silicon alloys

Villafañe¹,

Houbaert²

2013

REVMETAL

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Silicon steel is an industrially-desired alloy of iron and silicon, characterised by soft magnetic properties, low eddy-current losses, and low magnetostriction. Silicon steels have narrow hysteresis cycles, making them particularly advantageous in applications using electromagnetic fields, such as transformers, generators, electric motor cores, and few other components in industry. Despite its incontestable industrial value, there is not much agreement on the atomic structure of silicon steel. Gaining better understanding of e.g. ordering processes in Fe-Si alloys could not only explain their magnetic properties, but also open opportunities to reduce their weaker characteristics, such as brittleness that adversely affects silicon steel workability and its associated high production costs. This review summarises the state-of-the-art knowledge about ordering in silicon steel and describes the most relevant experimental techniques used for studying its microstructure. In addition, the process of building the iron rich part of the Fe-Si phase diagram is explained. Lastly, the influence of order on the alloy's magnetic and mechanical properties is illustrated. KeywordsOrdering; Iron-silicon alloys; Intermetallic phases; Mechanical properties; Phase diagram. Revisión de fenómenos de orden en aleaciones hierro-silicio ResumenEl acero al silicio es una aleación de importancia industrial, caracterizada por propiedades magnéticas blandas, bajas pérdidas por corrientes de Foucault y baja magnetostricción. Los aceros al silicio tienen ciclo de histéresis estrecho, lo que es una ventaja en aplicaciones con campos electromagnéticos, como transformadores, generadores, núcleos de motores eléctricos y otros componentes industriales. A pesar de su incomparable valor industrial, no hay convenio sobre la estructura atómica del acero al silicio. Obtener mayor conocimiento sobre los procesos de orden no sólo podría explicar las propiedades magnéticas sino que también podría abrir vías para la reducción de sus características más débiles, como su fragilidad, la cual afecta negativamente a la fabricación del acero al silicio y se asocia con altos costes de producción. Esta revisión resume los últimos conocimientos sobre orden en acero al silicio y describe las técnicas experimentales más importantes usadas para estudiar su estructura. Además, se da una explicación sobre la construcción de la parte rica en hierro del diagrama de fases del Fe-Si. Por último se ilustra la influencia del orden en las propiedades magnéticas y mecánicas. Palabras claveOrden; Aleaciones hierro-silicio; Fases intermetálicas; Propiedades mecánicas; Diagrama de fases.

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Section: Figura 6 Difracción De Neutrones Mostrando Una Débil Reflexsupporting

confidence: 91%

Section: Figura 6 Difracción De Neutrones Mostrando Una Débil Reflexmentioning

confidence: 94%

A review of ordering phenomena in iron-silicon alloys

Villafañe¹,

Houbaert²

2013

REVMETAL

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“…Magnetic properties of this alloy can be improved as silicon amounts increasing [1][2][3][4] ,however, this material becomes obviously hard and brittle with silicon content improving and is difficult to obtain by conventional rolling routes. Especial for 6.5wt% Si electrical steel, it exhibits excellent soft magnetic properties such as low iron loss, near-zero magneto striction and so on.…”

Section: Instructionsmentioning

confidence: 99%

6.5wt% Si Electrical Sheet Produced by Laminar Composite Technique with Thermo-mechanical Process

Ji¹

2017

dtcse

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Fabrication of 6.5wt%Si electrical thin sheet by laminar composite technique and thermo-mechanical process was presented in this article. Morphology and elements content variation over thickness of each layer of the composite plate contains outer, transition and inner layers are investigated respectively during different stages of deformation and heat treatment procedures. Iron loss value of the homogeneous sheet was measured after diffusion annealing and a series of gradient high silicon electrical steels could be obtained by controlling the diffusion route.

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“…No Fe 3 Si particles were identified by TEM in these samples. Shin et al 18) investigated the existence of intermetallic compounds in Si steels with various Si contents for specimens with various cooling rates after being annealed at 1 123 K for 1 h and reported that Fe 3 Si particles did not exist in Si steel samples with a Si content less than 5.4 wt% regardless of the cooling rate. Our observations are in agreement with this report.…”

Section: Effects Of Temperature and Strain Rate On Deformation Twinnimentioning

confidence: 99%