Annealing behavior of FeNi alloy processed by high-pressure torsion

Seungwon Lee*, Zenji Horita

*Corresponding author for this work

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

8 Scopus citations

Abstract

An Fe-50at %Ni alloy was processed by high-pressure torsion (HPT) and annealed at lower homologous temperatures. Vickers microhardness and microstructural evolutions were examined with respect to the annealing time. Disks with 10 mm diameters having 0.85 mm thicknesses were subjected to HPT under a pressure of 6 GPa for 1-10 revolutions at a rotation speed of 1 rpm. The annealing after the HPT processing was conducted at homologous temperatures of ∼0.3 for up to 40 days. The hardness increases with straining and saturates to a constant level of ∼400 Hv at large equivalent strain. Microstructure analysis using XRD revealed that there was a peak corresponding to an α (Fe, Ni) phase.

Original languageEnglish
Title of host publicationNanomaterials by Severe Plastic Deformation, NanoSPD5
PublisherTrans Tech Publications Ltd
Pages313-318
Number of pages6
ISBN (Print)9783037850077
DOIs
StatePublished - 2011

Publication series

NameMaterials Science Forum
Volume667-669
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Keywords

  • Annealing
  • Fe-Ni alloy
  • High pressure torsion
  • TEM
  • XRD

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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