Recrystallization behaviour of the nickel-based alloy 80 a during hot forming

S. Mitsche*, P. Poelt, C. Sommitsch

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

The dynamic recrystallization as well as meta-dynamic and static recrystallization of the nickel-based alloy 80A was investigated by means of electron backscatter diffraction (EBSD). Specimens were hot compressed at a temperature of 1120°C and a strain rate of 0.1/s at varying strain and soak times to describe the recrystallization behaviour. Various approaches were tested in order to differentiate between recrystallized and deformed grains based on EBSD data. The grain orientation spread was clearly found to be the most reliable procedure. A high twinning of the recrystallized grains was observed, and as a consequence the measured grain size was strongly dependent on whether the coherent and incoherent twin boundaries were regarded as genuine boundaries or removed.

Original languageEnglish
Pages (from-to)267-274
Number of pages8
JournalJournal of microscopy
Volume227
Issue number3
DOIs
Publication statusPublished - 1 Sep 2007

Keywords

  • Electron backscatter diffraction
  • Nickel-based alloy
  • Recrystallization
  • Scanning electron microscope

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology

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