Microstructure and mechanical properties of cold-drawn pearlitic wires affect by inherited texture

Document Type

Journal Article

Publisher

Elsevier

Faculty

Faculty of Health, Engineering and Science

School

School of Engineering

RAS ID

19538

Comments

Fang, F., Zhou, L., Hu, X., Zhou, X., Tu, Y., Xie, Z., & Jiang, J. (2015). Microstructure and mechanical properties of cold-drawn pearlitic wires affect by inherited texture. Materials & Design, 79, 60-67. Available here

Abstract

Pearlitic steel rods with inherited texture (IT) were prepared from pre-drawing followed by austenitization treatment. Effects of inherited texture on the microstructure and mechanical properties of cold-drawn pearlitic wires were investigated. The 〈1. 1. 0〉 texture of ferrite increased with drawing strain and became saturated when strain reached about 2.0. However, wires with IT showed a higher 〈1. 1. 0〉 texture intensity. The ratio of bent over straight pearlite colonies in wires with IT were about 20% lower than that of wire without IT in drawing. Additionally, Wires with IT showed a greater work hardening rate. Tensile strength of wires without IT increased from 1260. MPa to 3010. MPa as drawing strain increased to 3.5, while wire with IT exhibited an 7% increase in tensile strength (i.e., up to 3230. MPa). Torsion angle of wires with IT were about 13% higher than that of wires without IT. Differential scanning calorimetry (DSC) analysis showed that wires with IT have higher thermal stability.

DOI

10.1016/j.matdes.2015.04.036

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