Application of vanadium precipitation for lower rolling force and enhanced strength of hot strip steel

• Autorzy: Suwanpinij P. , Dickert H.H.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In this paper the application of vanadium precipitation for lower rolling force and enhanced strength of hot strip steel was discussed. Design/methodology/approach: Fine precipitates of vanadium were firstly investigated by Scanning Transmission Electron Microscopy (STEM), Transmission Electron Microscopy (TEM) and Energy Dispersive X-Ray Spectroscopy (EDX). Further quantitative characterisation for the precipitation and the addition of high amount of nitrogen will be discussed. Findings: The contribution for strength from different components, namely, grain refinement, second phase hard particles and precipitation strengthening was separately analysed. Research limitations/implications: Basic knowledge in thermodynamics of the precipitation of microalloying elements is applied for the process design of hot strip rolling for reduced rolling force and improved strengthening effect. Originality/value: A vanadium-added steel tends to need moderate rolling force through recrystallisation controlled rolling while the other with a small addition of 0.05% niobium requires significantly higher force.

Słowa kluczowe

EN

High Strength Low Alloyed (HSLA) steel; precipitation; hot rolling; process design

PL

stal HSLA; wydzielanie; walcowanie na gorąco; projektowanie procesu

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2014
• Tom: Vol. 70, nr 1
• Strony: 39--44
• Opis fizyczny: Bibliogr. 4 poz.

Twórcy

autor

Suwanpinij P.

• The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut’s University of Technology North Bangkok (KMUTNB), Bangkok, Thailand

autor

Dickert H.H.

• Department of Ferrous Metallurgy (IEHK), RWTH Aachen University, Aachen, Germany

Bibliografia

• [1]. T. Siwecki, G. Engberg, Recrystallization controlled rolling of steels, Proceedings of the International Conference “Thermomechanical Processing in Theory, Modelling and Practice”, 121-144
• [2]. N.A. Ahmad, A.A. Wheeler, W.J. Boettinger, G.B. McFadden, Solute Trapping and Solute Drag in a Phase-Field Model of Rapid Solidification, Physical Review E 58 (1998) 3436-3450
• [3]. I. Loginova, J. Odqvist, G. Amberg, J. Argen, The phase field approach and solute drag modelling of the transition to massive γ →α transformation in binary Fe-C alloys, Acta Materialia 51 (2003) 1327-1339
• [4]. P. Suwanpinij, Multi-scale modelling of hot rolled dual-phase steels for process design, RWTH Aachen University, Doctoral Thesis, 2012, opened access at http://darwin.bth.rwth-aachen.de/opus3/volltexte/2013/4343