EXAFS-spectroscopy and thermal neutron diffraction study of the effect of deformation by high pressure torsion on the atomic ordering and magnetic properties of the FeCo alloy

A. M. Glezer, L. F. Muradimova, P. A. Borisova, A. A. Veligzhanin, O. V. Chernysheva, R. V. Sundeev, D. V. Louzguine-Luzgin, N. S. Perov, S. O. Shirshikov, Tomchuk

Research output: Contribution to journalArticlepeer-review

Abstract

The specific features of B2 atomic ordering and the ordering-dependent structure and magnetic characteristics of the FeCo alloy upon quasi-hydrostatic high-pressure torsion (HPT) in the Bridgman anvils at room and elevated temperatures and subsequent annealing have been studied by thermal neutron diffraction, X-ray diffraction, EXAFS spectroscopy, and magnetometry. An abrupt decrease in the degree of long-range order upon HPT has been revealed by neutron diffraction and EXAFS spectroscopy data exhibiting the formation of an almost ideal B2 ordering of in the nearest coordination spheres of Fe and Co atoms.

Original languageEnglish
Article number159021
JournalJournal of Alloys and Compounds
Volume866
DOIs
Publication statusPublished - 2021 Jun 15

Keywords

  • High pressure torsion
  • Long-range-ordering
  • Magnetization
  • Neutron diffraction
  • Phase transformation
  • Severe plastic deformation
  • Spectroscopy

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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