Influence of steel cleanliness on drawability of fine filaments with high tensile strength

Godon, Julie; Antoine, Pascal; Vogt, Jean; Bouquerel, Jérémie

doi:10.1051/metal/2019025

Cited by 6 publications

(6 citation statements)

References 15 publications

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“…The randomly distributed non-metallic inclusions in the steel matrix affect the material’s properties. Especially in the drawing of high-carbon hard wire steel, the size and morphology of non-metallic inclusions directly lead to fracture [ 2 , 3 , 4 , 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Refinement and Modification of Al2O3 Inclusions in High-Carbon Hard Wire Steel via Rare Earth Lanthanum

Ning

Wang

et al. 2023

Materials

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In this paper, an experimental protocol of adding rare earth lanthanum (La) was used to refine and modify inclusions (Al2O3) in aluminum-deoxidized steel. An optical microscope (OM), a scanning electron microscope (SEM), and an energy dispersive spectrometer (EDS) were used to study the impact of size distribution, number density, distribution uniformity, interfacial distance, area density, and so on of rare earth La on high-carbon hard wire steel inclusions. As indicated by the findings when the addition amount of La is 0.063%, the refining and homogenizing effect of Al2O3 inclusions in steel is the best. The average diameter of the inclusions is 1.75 μm, the uniformity is 0.84, the proportion of the interfacial spacing greater than 10 μm is 48.4%, and the area density of inclusions is set at 0.014. Based on classical thermodynamics and Factsage software, the effect of La activity on inclusion formation was computed. As indicated by the findings, the addition of rare earth La mainly combines with O and S in the liquid steel, and the La-containing inclusions wrap around the Al2O3 inclusions, hindering the Al2O3 inclusions. Through the evolution of inclusions during solidification, the modification of Al2O3 inclusions via rare earth La and the types of inclusions are discussed. The experimental results and theoretical calculations verify that the optimal treatment plan is to add 0.063% La.

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Section: Introductionmentioning

confidence: 99%

Refinement and Modification of Al2O3 Inclusions in High-Carbon Hard Wire Steel via Rare Earth Lanthanum

Ning

Wang

et al. 2023

Materials

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“…As de-oxidation products during secondary steelmaking, non-metallic inclusions could be detrimental to steel production and performance. During the steel forming process, non-deformable, non-metallic inclusions could bring failures to the hot rolling and cold drawing of steels [1]. Especially for some steel grades, e.g., tire cord steel, non-deformable non-metallic inclusions are the dominant reason for failure of wire during drawing and service [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…During the steel forming process, non-deformable, non-metallic inclusions could bring failures to the hot rolling and cold drawing of steels [1]. Especially for some steel grades, e.g., tire cord steel, non-deformable non-metallic inclusions are the dominant reason for failure of wire during drawing and service [1,2]. Accordingly, the deformability of inclusions is of vital importance to the production and service of tire cord steels.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Modeling Study of Deformability of Glassy CaO-(MnO)-Al2O3-SiO2 Inclusions

Shu

You

Alatarvas

et al. 2022

Metals

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The occurrence of non-deformable, non-metallic inclusions is the dominant reason for failure of wire during drawing and degrades service life for some steel grades, e.g., tire cord steel. To investigate the deformability of glassy inclusions in CaO-Al2O3-SiO2 and MnO-Al2O3-SiO2 systems, experimental and numerical methods were used. Young’s modulus values of some glasses based on the CaO-Al2O3-SiO2 and MnO-Al2O3-SiO2 systems, which correspond to typical inclusions in tire cord steel, were measured with resonant ultrasound spectroscopy. The effect of basicity, defined as the ratio of mass percentage of CaO to SiO2, on Young’s modulus and Poisson’s ratio were investigated. The Young’s moduli of glasses are enhanced with increasing basicity, which could be attributed to the high field strength of calcium ions. The Poisson’s ratios of glasses also show an increase tendency with increasing basicity, which could be due to the loss of rigidity of network with introduction of calcium ions. The equations in the literature for Young’s modulus calculation were evaluated based on the present and literature data. Appen’s equation is modified by re-fitting the present and literature data to give accurate estimation of Young’s modulus with the mean deviation of 2%. The iso-Young’s modulus diagrams for CaO-Al2O3-SiO2 systems were constructed. It is proposed that the iso-Young’s modulus diagram could be combined with liquid area in CaO-Al2O3-SiO2 ternary phase diagram to optimize the inclusion composition during both hot rolling and cold drawing.

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“…Single and polycrystalline diamond are other alternative. However, the latter are only valid for nonferrous materials, since it easily reacts with carbide-forming elements such as iron in ferrous materials [2], [3].…”

Section: Wire Drawing Processmentioning

confidence: 99%

“…3.1 (see equation(3.51)), and 𝜂 𝑑𝑒𝑙 is the delamination stress triaxiality which, as in the Lode angle parameter 𝜃 ̅ 𝑑𝑒𝑙 , is calculated through the stress tensor defined only with the components involving the third direction (see(4.70)).…”

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confidence: 99%

A microstructure-based constitutive model for pearlite.

Jorge

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Fully pearlitic eutectoid steels have an excellent compromise of mechanical strength and ductility and are widely used for rails, prestressing tendons and high-strength wires. These excellent mechanical properties are a consequence of their particular nanocomposite structure combining thin cementite lamellae (~12% volumen fraction) with ferritic lamellae. This complex substructure entails a complex microstructural and property evolution with applied strain that is difficult to model. In this work, a microstructure-based constitutive model for pearlite accounting for both the elastoplastic behaviour and the damage evolution is presented. The original formulation, valid for mesoscopic scales, considers the behaviour of ferrite and cementite separately, assuming that strengthening occurs through the mechanisms acting in ferrite. For its application in macro-scale systems such as wire drawing, a multi-colony homogenization strategy has been applied. For damage, a Continuum Damage Mechanics approach adapted to the features of pearlite has been adopted with the coupling of damage to the mechanical response. The model has been implemented for use in finite element simulations and has been calibrated using experimental data of tensile and torsion tests. Subsequently, the model has been validated, confirming its predictive capabilities across various aspects, including the mechanical response under different stress states, the build-up of internal stresses and the evolution of the microstructure with deformation.

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Influence of steel cleanliness on drawability of fine filaments with high tensile strength

Cited by 6 publications

References 15 publications

Refinement and Modification of Al2O3 Inclusions in High-Carbon Hard Wire Steel via Rare Earth Lanthanum

Refinement and Modification of Al2O3 Inclusions in High-Carbon Hard Wire Steel via Rare Earth Lanthanum

Experimental and Modeling Study of Deformability of Glassy CaO-(MnO)-Al2O3-SiO2 Inclusions

A microstructure-based constitutive model for pearlite.

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