eprintid: 14955
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/49/55
datestamp: 2023-11-10 03:29:33
lastmod: 2023-11-10 03:29:33
status_changed: 2023-11-10 01:58:15
type: article
metadata_visibility: show
creators_name: Akhtar, M.N.
creators_name: Khan, M.
creators_name: Khan, S.A.
creators_name: Afzal, A.
creators_name: Subbiah, R.
creators_name: Ahmad, S.N.
creators_name: Husain, M.
creators_name: Butt, M.M.
creators_name: Othman, A.R.
creators_name: Bakar, E.A.
title: Determination of non-recrystallization temperature for niobium microalloyed steel
ispublished: pub
keywords: Alloying elements; Compression testing; Deformation; Low carbon steel; Microalloying; Microstructure; Niobium alloys; Niobium metallography; Optical emission spectroscopy; Recrystallization (metallurgy); Scanning electron microscopy; Steel metallography, Deformation parameter; Micro-structure evolutions; Nb microalloyed steels; Niobium bearing microalloyed steel; Niobium microalloyed steel; Optical emission spectroscopies (OES); Recrystallization temperatures; Recrystallized grains, Microalloyed steel
note: cited By 26
abstract: In the present investigation, the non-recrystallization temperature (TNR) of niobium-microalloyed steel is determined to plan rolling schedules for obtaining the desired properties of steel. The value of TNR is based on both alloying elements and deformation parameters. In the literature, TNR equations have been developed and utilized. However, each equation has certain limitations which constrain its applicability. This study was completed using laboratory-grade low-carbon Nb-microalloyed steels designed to meet the API X-70 specification. Nb-microalloyed steel is processed by the melting and casting process, and the composition is found by optical emission spectroscopy (OES). Multiple-hit deformation tests were carried out on a Gleeble® 3500 system in the standard pocket-jaw configuration to determine TNR. Cuboidal specimens (10 (L) � 20 (W) � 20 (T) mm3 ) were taken for compression test (multiple-hit deformation tests) in gleeble. Microstructure evolutions were carried out by using OM (optical microscopy) and SEM (scanning electron microscopy). The value of TNR determined for 0.1 wt. niobium bearing microalloyed steel is ~ 951�C. Nb-microalloyed steel rolled at TNR produce partially recrystallized grain with ferrite nucleation. Hence, to verify the TNR value, a rolling process is applied with the finishing rolling temperature near TNR (~951�C). The microstructure is also revealed in the pancake shape, which confirms TNR. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
date: 2021
publisher: MDPI AG
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85106946356&doi=10.3390%2fma14102639&partnerID=40&md5=af6c913157c460e6d74151afce71261a
id_number: 10.3390/ma14102639
full_text_status: none
publication: Materials
volume: 14
number: 10
refereed: TRUE
issn: 19961944
citation:   Akhtar, M.N. and Khan, M. and Khan, S.A. and Afzal, A. and Subbiah, R. and Ahmad, S.N. and Husain, M. and Butt, M.M. and Othman, A.R. and Bakar, E.A.  (2021) Determination of non-recrystallization temperature for niobium microalloyed steel.  Materials, 14 (10).   ISSN 19961944