Effect of Controlled Cooling after Hot Rolling on the Mechanical Properties of a Low Carbon Niobium Microalloyed Steel Wire Rod

Abstract:

The wire rod has high relevance due to its wide application as a raw material for steel wire and wire processed in cold rolling mills and drawing. The control of process variables, such as cooling rate, coiling temperature, rolling speed is essential for obtaining the microstructures and therefore mechanical properties of the material. The purpose of this work is to study the behavior of the microstructure and mechanical properties with the variation of thermomechanical treatment in the hot rolling of wire rod. The steels used in this study were the microalloyed niobium steel equivalent to ASTM A913 grade 50 and carbon steel equivalent to ASTM A510 grade 1013. Despite the carbon steel has higher equivalent carbon to microalloyed steel, was found higher yield strength (σ_e) in the microalloyed niobium steel. Thus, by applying appropriate thermomechanical treatment in microalloyed steel is possible to improve mechanical properties mainly due to grain refining.

• Periodical: Materials Science Forum (Volume 930)
• Pages: 333-338
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.930.333
• Online since: September 2018
• Authors: Felipe Farage David*, Sayd Farage David, Renan Carreiro Rocha, Ricardo Arthur Sanguinetti Ferreira
• Keywords: Hot Rolling, Microalloyed Steel, Thermomechanical Treatment, Wire Rod

References

[1] L. Fan, T. Wang, Z. Fu, S. Zhang, Q. Wang: Materials Science & Engineering A Vol. 607 (1) (2014), p.559.

[2] P. Gong, E.J. Palmiere, W.M. Rainforth: Acta Materialia Vol. 97 (1) (2015), p.392.

[3] F.F. David, F.F. David, L.L. Silveira, R.A.S. Ferreira: Materials Science Forum Vol. 869 (1) (2016), p.435.

[4] S. Ghosh, S. Mula: Materials Science & Engineering A Vol. 646 (1) Aug. (2015), p.218.

[5] S.G. Jansto: Metal. Vol. 23 (1) (2012), p.1.

[6] C.N. Homsher: Determination of the non-recrystallization temperature (tnr) in multiple microalloyed steels, Master (Dissertation). Golden 2013. Colorado School of Mines. (CO).

[7] S. Vervynckt, K. Verbekena, P. Thibauxc, Y. Houbaert: Materials Science & Engineering A Vol. 528 (1) (2011), p.5519.

[8] ASTM E407-07 (2007): Standard Practice for Microetching Metals and Alloys. Pensilvânia, ASTM - American Society for Testing and Materials.

[9] ASTM E112-13 (2013): Standard Test Methods for Determining Average Grain Size. Pensilvânia, ASTM - American Society for Testing and Materials.

[10] Associação Brasileira de Normas Técnicas. (2013): Materiais metálicos – Ensaio de Tração. Rio de Janeiro: ABNT 2013. (NBR-6892).

[11] B. Yalamanchili, P.M. Power, D. Lanham. A Technical Review of Industrial Practices for Decreasing the Strain Hardening Rate of Low Carbon Steel Wire. In: Wire & Cable Technical Symposium at wai's74th annual convention, pp.1-11, Texas, Jun. (2004).

[12] S. Gunduz: Materials Science and Engineering A Vol. 486 (1) (2007), p.63.

[13] M. Jahazi, B. Eghbali: Materials Processing Technology Vol. 113 (1) (2001), p.594.

[14] R.J. Glodowski. A review of vanadium microalloying in hot rolled steel sheet products. In: International Seminar on Application Technologies of Vanadium in Flat – Rolled Steels, Suzhou, Out. (2005).

[15] S.S. Campos, E.V. Morales, J. Kestenbach: Materials Characterization Materials Vol. 52 (1) (2004), p.379.