Austenite to ferrite transformation after hot deformation of low carbon steel

Deni Ferdian, Norman Anton

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

The aim of this work is to get the ferrite nucleation criteria from the recrystallized austenite grain after hot deformation in non isothermal condition. A series of rolling experiments have been performed with industrial C-Mn steel in two different temperatures of 1060 and 960 °C with sequence cooling cycle. The microstructure changes that taking place during hot rolling and after cooling has been examined by metallographic evaluation which allows the identification of ferrite transformation after austenite recrystallization. The recrystallization control was carried out using interrupted cooling method to obtain transformation from actual austenite grain. Using an approach of grain boundary interfacial area (S v) calculation, which attempts to account the number of sites for potential nucleation of ferrite in thermomechanically processed austenite, an essential correlation of the correspond measured grains was developed. The influence of delay interval time after recrystallization to transformation is observed and the implication obtained is discussed. From those results, a hypothetical interaction between parameter and nucleation is described. It is concluded that, strain and holding time has a major role on the recrystallization process of austenite and bring an effect to ferrite grain refinement. The calculated S v has indicated the potential sites of nucleation that are proliferated with increasing strain.

Original languageEnglish
Title of host publicationManufacturing Science and Technology
Pages2801-2807
Number of pages7
DOIs
Publication statusPublished - 1 Jan 2012
Event2011 International Conference on Manufacturing Science and Technology, ICMST 2011 - Singapore, Singapore
Duration: 16 Sep 201118 Sep 2011

Publication series

NameAdvanced Materials Research
Volume383-390
ISSN (Print)1022-6680

Conference

Conference2011 International Conference on Manufacturing Science and Technology, ICMST 2011
CountrySingapore
CitySingapore
Period16/09/1118/09/11

Keywords

  • Austenite recrystallization
  • Controlling austenite
  • Ferrite transformation
  • Grain boundary interface

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