Analysis of recrystallization behavior of hot-deformed austenite reconstructed from EBSD orientation maps of lath martensite

Manabu Kubota, Kohsaku Ushioda, Goro Miyamoto, Tadashi Furuhara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The recrystallization behavior of hot-deformed austenite of 0.55% C low alloy steels at 900, 850 and 800ºC was investigated by a conventional double-hit compression test and a new method which reconstructs the parent austenite orientation map from an EBSD (electron backscattering diffraction) orientation map of daughter lath martensite. The new method can clearly reconstruct the parent austenite structure at high temperature from the daughter lath martensite structure and we can obtain the information on crystal orientation of the work-hardened austenite. It was revealed that recrystallization of austenite at 800 °C is significantly retarded by the addition of 0.1% V. The strong texture of <110> parallel to the compression direction develops just after the hot-deformation, but this texture becomes weaker as the recrystallization progresses. By applying the reconstruction method, it becomes possible to evaluate various phenomena related to the hot-deformation of austenite.

Original languageEnglish
Title of host publicationTHERMEC 2016
EditorsChristof Sommitsch, Mihail Ionescu, Brajendra Mishra, Brajendra Mishra, Ernst Kozeschnik, T. Chandra
PublisherTrans Tech Publications Ltd
Pages2389-2394
Number of pages6
ISBN (Print)9783035711295
DOIs
Publication statusPublished - 2017 Jan 1
Event9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, Austria
Duration: 2016 May 292016 Jun 3

Publication series

NameMaterials Science Forum
Volume879
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016
CountryAustria
CityGraz
Period16/5/2916/6/3

Keywords

  • Austenite
  • Electron backscattering diffraction
  • Martensite
  • Recrystallization
  • Steels

ASJC Scopus subject areas

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

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  • Cite this

    Kubota, M., Ushioda, K., Miyamoto, G., & Furuhara, T. (2017). Analysis of recrystallization behavior of hot-deformed austenite reconstructed from EBSD orientation maps of lath martensite. In C. Sommitsch, M. Ionescu, B. Mishra, B. Mishra, E. Kozeschnik, & T. Chandra (Eds.), THERMEC 2016 (pp. 2389-2394). (Materials Science Forum; Vol. 879). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.879.2389