Microstructural evolution of bainitic steel severely deformed by equal channel angular pressing

M. Nili-Ahmadabadi, F. Haji Akbari, F. Rad, Z. Karimi, M. Iranpour, B. Poorganji, Tadashi Furuhara

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

High Si bainitic steel has been received much of interest because of combined ultra high strength, good ductility along with high wear resistance. In this study a high Si bainitic steel (Fe-0.22C-2.0Si-3.0Mn) was used with a proper microstructure which could endure severe plastic deformation. In order to study the effect of severe plastic deformation on the microstructure and properties of bainitic steel, Equal Channel Angular Pressing was performed in two passes at room temperature. Optical, SEM and TEM microscopies were used to examine the microstructure of specimens before and after Equal Channel Angular Pressing processing. X-ray diffraction was used to measure retained austenite after austempering and Equal Channel Angular Pressing processing. It can be seen that retained austenite picks had removed after Equal Channel Angular Pressing which could attributed to the transformation of austenite to martensite during severe plastic deformation. Enhancement of hardness values by number of Equal Channel Angular Pressing confirms this idea.

Original languageEnglish
Pages (from-to)5986-5993
Number of pages8
JournalJournal of Nanoscience and Nanotechnology
Volume10
Issue number9
DOIs
Publication statusPublished - 2010 Sep 1
Externally publishedYes

Keywords

  • Bainitic steel
  • Equal channel angular pressing
  • Severe plastic deformation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

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