Development of texture in low-carbon steels for cold heading

A series of experiments were made determining textural, microstructural, and mechanical properties in cold drawn, and spheroidization heat treated low-C steel wires (AISI-1018 and 1033 grades). It was found that texture exerted a significant influence on the mechanical properties, while microstructure had a comparable influence. Mechanical properties are represented by yield strength (YS), ultimate compressive strength (UCS) and by homogeneous strain energy (EHOM), defined by the integral of stress up to uniform elongation. Textural properties are represented by the Taylor-factor, M, the R-value, and by the maximum of the orientation distribution function (ODFMAX). Micro-structural properties are treated with the help of the aspect ratio parameter (I[AR), where AR is the grain aspect ratio (length to ellipsoidal width), the grain size parameter (1VD), and the mean free path between second phase spheroidized cementites X/N. For cold drawn steel wires, homogeneous strain energy (EHOM) is well correlated to (1//AR) and (ODFMAX). Yield strength, on the other hand, appears to be chiefly influenced by the aspect ratio parameter, thus here ODFMAX exerts less influence. The yield strength (YS) of annealed, spheroidization treated low-C wires are equally influenced by the grain size parameter (1/V'D), the mean distance between spherulites (X/N) and by ODFMAX.The textures of the cold drawn wires could be well described by the (110) fibre parallel to wire axis, and by the (111) fibre normal to wire axis. The annealed wires, while also featuring these two fibres, displayed a distinct {111}(110) single orientation.

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“…In addition to the brief overview of texture development given here, a detailed analysis is given in another work [Sugondo (1990)].…”

Section: Figures 5a and 5bmentioning

confidence: 99%

The Compound Influence of Textureand Microstructure on theMechanical Properties of Low‐C SteelWires

Gangli

Szpunar

Sugondo

1990

Texture, Stress, and Microstructure

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“…further variable affecting cold headability is the texture of the wire. There are indications that the stronger the 1 1 0 fiber texture is, the better the formability of the steel wire (Sugondo et al, 1991).…”

Section: Introductionmentioning

confidence: 98%

Influence of strain rate and adiabatic heating on the deformation behavior of cold heading steels

Rämö

Kuokkala

Vuoristo

2009

Journal of Materials Processing Technology

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“…The texture changes which take place in wire drawn polycrystals as well as in single crystals were the subject of several earlier studies by Ahlborn (1965a,b;1966), Ahlborn and Sauer (1968), Mathur and Dawson (1990), Montesin et al (1991), Sugondo et al (1991) and Van Houtte et al (1994). Ahlborn (1965a,b;1966) has examined the textures which develop from different initial orientations of f.c.c, single crystals.…”

Section: Introductionmentioning

confidence: 99%