Analysis of the extent of interphase precipitation in V-HSLA steels through in-situ characterization of the γ/α transformation

Samuel Clark, Vit Janik, Arjan Rijkenberg, Seetharaman Sridhar

Research output: Contribution to journalArticle

15 Citations (Scopus)
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Abstract

In-situ characterization techniques have been applied to elucidate the influence of γ/α transformation upon the extent of interphase precipitation in a low-carbon, vanadium-HSLA steel. Electron Back-scattered diffraction analyses of the γ/α orientation relationship with continuous cooling at 2 and 10 K/s suggest that the proportion of ferrite likely to hold interphase precipitation varies little with cooling rate. However, TEM analyses show that the interphase precipitation refines with increasing cooling rate in this cooling range. With cooling rates in excess of 20 K/s, interphase precipitation is increasingly suppressed due to the increasingly diffusional-displacive nature of the Widmanstätten γ/α transformation that is activated. The present study illustrates that the extent and dimensions of interphase precipitation can be controlled through controlled cooling.


Publisher Statement: NOTICE: this is theauthor’s version of a work that was accepted for publication in MaterialsCharacterization. Changes resulting from the publishing process, such aspeer review, editing, corrections, structural formatting, and other quality controlmechanisms may not be reflected in this document. Changes may have been made tothis work since it was submitted for publication. A definitive version wassubsequently published in Materials Characterization, [115, (2016)] DOI:10.1016/j.matchar.2016.03.021

 

© 2016, Elsevier. Licensedunder the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0International http://creativecommons.org/licenses/by-nc-nd/4.0/

Original languageEnglish
Pages (from-to)83-89
Number of pages7
JournalMaterials Characterization
Volume115
Early online date4 Apr 2016
DOIs
Publication statusPublished - 1 May 2016
Externally publishedYes

Bibliographical note

NOTICE: this is the author’s version of a work that was accepted for publication in Materials Characterization. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Characterization, [115, (2016)] DOI: 10.1016/j.matchar.2016.03.021

© 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • In-situ-EBSD
  • In-situ-HT-CLSM
  • Interphase Precipitation
  • Orientation Relationships

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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