Application of Hypereutectoid Steel for Development of High Strength Steel Wire

Ochiai, Isao; Nishida, Shinichi; Ohba, Hiroshi; Kawana, Akifumi

doi:10.2355/tetsutohagane1955.79.9_1101

Cited by 43 publications

(36 citation statements)

References 2 publications

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“…[7][8][9][10] On the other hand, the electrical conductivity is about 24 to 50%IACS for the age-hardened Cu-Be alloys 1,2) and 50 to 90%IACS for the Cu-M alloy wires. [3][4][5][6] Considering that the highest strength of crystalline metallic materials has been obtained for cold-rolled Fe-C alloy (piano wire) with a fibrous structure consisting of -Fe ferrite and Fe 3 C cementite carbide, 11,12) it is expected that higher strength characteristics in Cu-based alloys are obtained in Cu-based alloys with the similar fibrous mixed structure. We looked for an optimum alloy system where a well-developed fibrous structure consisting of Cu and compound was formed by cold drawing.…”

Section: Introductionmentioning

confidence: 99%

Ultrahigh Strength and High Electrical Conductivity Characteristics of Cu-Zr Alloy Wires with Nanoscale Duplex Fibrous Structure

et al. 2006

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The cold drawing of cast Cu 100Àx Zr x (x ¼ 3, 4 and 5 at%) alloys to the reduction ratio of 99.7% was found to cause simultaneous achievement of ultrahigh tensile strength of 1350 to 1800 MPa and high electrical conductivity of 30 to 45%IACS (International Annealed Copper Standard). The cold-drawn Cu 95 Zr 5 alloy wire has a well-developed fibrous structure of fcc-Cu and tetragonal Cu 9 Zr 2 phases. The volume ratio of the fcc-Cu phase was evaluated to be about 76%. A very high density of internal defects was observed inside the Cu 9 Zr 2 phase in the cold-drawn Cu 95 Zr 5 alloy. The microstructure data suggest that the Cu fibrous phase with high aspect ratios is the origin for the achievement of high electrical conductivity and the well-developed fibrous structure contributes to the high tensile strength. The success of synthesizing the Cu-Zr alloy wire with simultaneously high tensile strength and high electrical conductivity exceeding the best combination of all Cu-based alloys reported up to data is expected to be used as a new type of high-strength and high conductivity material because of some advantages of energy saving, low materials cost and simple production process.

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Section: Introductionmentioning

confidence: 99%

Ultrahigh Strength and High Electrical Conductivity Characteristics of Cu-Zr Alloy Wires with Nanoscale Duplex Fibrous Structure

et al. 2006

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“…To obtain the high strength performance of copper alloys, complicated subsequent manufacturing processes were needed after casting. It has been found that the highest strength of crystalline metallic material is cold-drawn Fe-C alloy (piano wire) with a fibrous structure consisting of α-Fe and Fe 3 C [9,10] . Moreover, the similar finestructure composite with micron-sized grains in Cu-based alloys has also been proven beneficial for higher strength.…”

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confidence: 99%

Microstructures and properties of rapidly solidified Cu90Zr10-x Al x alloys

Zhou¹,

Jiang²,

Yin³

et al. 2016

China Foundry

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“…A number of investigators have studied the increase in strength that results from cold drawing of eutectoid and hypereutectoid steel wires (3,6,13,14,15,16,17). Most of these studies have reported strength as a function of wire diameter.…”

Section: Properties and Strengtheninrr Mechanismsmentioning

confidence: 99%

“…By analogy with the experimental work of Taleff et al ( 11,12), one might expect that the strength of a pearlitic steel results from the sum of strengthening contributions from different barriers to dislocation motion. Thus for a severely worked pearlitic steel, (3) where wss ' c$dite~ %lony and Owl1 represent the resistance to dislocation motion resulting from solid solution additions ((cY,),,), pearlitic plate spacing (cJ~,J, pearlite colony size ~~~~~~~~~ and dislocation cell size (ocell).…”

Section: Properties and Strengtheninrr Mechanismsmentioning

confidence: 99%

“…The formation of this pro-eutectoid carbide network can be influenced by composition, control over phase transformations and thermo-mechanical processing. Ochiai and his co-workers (2,3,4,5) have investigated the influence of composition and cooling rate during patenting on the formation of a proeutectoid carbide network. Patenting involves rapid heating to austenite followed by rapid transformation to a fully pearlitic structure.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Severe Plastic Deformation on the Structure and Properties of Ultrahigh-Carbon Steel Wire

Lesuer

Syn

Sherby

2000

Investigations and Applications of Severe Plastic Deformation

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Ultrahigh-carbon steel wire can achieve very high strength after severe plastic deformation, because of the fine, stable substructures produce. Tensile strengths approaching 6000 MPa are predicted for UHCS containing 1.8%C. This paper discusses the microstructural evolution during drawing of UHCS wire, the resulting strength produced and the factors influencing fracture. Drawing produces considerable alignment of the pearlite plates. Dislocation cells develop within the ferrite plates and, with increasing strain, the size normal to the axis (h) decreases. These dislocation cells resist dynamic recovery during wire drawing and thus extremely fine substructures can be developed (h < 10 nm). Increasing the carbon content reduces the mean free ferrite path in the as-patented wire and the cell size developed during drawing. For UHCS, the strength varies as X.5. Fracture of these steels was found to be a function of carbide size and composition. The influence of processing and composition on achieving high strength in these wires during severe plastic deformation is discussed.

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Application of Hypereutectoid Steel for Development of High Strength Steel Wire

Cited by 43 publications

References 2 publications

Ultrahigh Strength and High Electrical Conductivity Characteristics of Cu-Zr Alloy Wires with Nanoscale Duplex Fibrous Structure

Ultrahigh Strength and High Electrical Conductivity Characteristics of Cu-Zr Alloy Wires with Nanoscale Duplex Fibrous Structure

Microstructures and properties of rapidly solidified Cu90Zr10-x Al x alloys

Influence of Severe Plastic Deformation on the Structure and Properties of Ultrahigh-Carbon Steel Wire

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