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Microstructures and Mechanical Properties of as-Drawn and Laboratory Annealed Pearlitic Steel Wires
Journal article

Microstructures and Mechanical Properties of as-Drawn and Laboratory Annealed Pearlitic Steel Wires

A. Durgaprasad, S. Giri, S. Lenka, S. Kundu, S. Mishra, S. Chandra, R. D. Doherty and I. Samajdar
Metallurgical and materials transactions. A, Physical metallurgy and materials science, v 48A(10), pp 4583-4597
01 Oct 2017
DOI: https://doi.org/10.1007/s11661-017-4269-5

Abstract

Materials Science Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Science & Technology Technology
Near eutectoid fully pearlitic wire rod (5.5 mm diameter) was taken through six stages of wire drawing (drawing strains of 0 to 2.47). The as-drawn (AD) wires were further laboratory annealed (LA) to re-austenitize and reform the pearlite. AD and LA grades, for respective wire diameters, had similar pearlite microstructure: interlamellar spacing (lambda) and pearlite alignment with the wire axis. However, LA grade had lower hardness (for both phases) and slightly lower fiber texture and residual stresses in ferrite. Surprisingly, essentially identical tensile yield strengths in AD and LA wires, measured at equivalent spacing, were found. The work hardened AD had, as expected, higher torsional yield strengths and lower tensile and torsional ductilities than LA. In both wires, stronger pearlite alignment gave significantly increased torsional ductility.

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International collaboration
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Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
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