Effect of Nanoscale Mesoscopic Structural States Associated with Lattice Curvature on the Mechanical Behavior of Fe-Cr-Mn Austenitic Steel

V. E. Panin, N. S. Surikova, S. V. Panin, A. R. Shugurov, I. V. Vlasov

Research output: Contribution to journalArticle

Abstract

The paper explores the effect of high-temperature cross rolling followed by cold rolling on the internal structure of metastable Fe-Cr-Mn austenitic stainless steel, formation of nonequilibrium martensite ε and α′ phases in it, dynamic rotations on fracture surfaces, fatigue life under alternating bending, and wear resistance. Scratch testing revealed a strong increase in the damping effect in the formed hierarchical mesoscopic substructure that promotes the formation of a nanocrystalline grain structure, formation of hcp ε martensite and bcc α′ martensite in grains, formation of a vortical filamentary substructure on the fracture surface, and an increase in the high-cycle fatigue properties and wear resistance. These processes are associated with a high density of nanoscale mesoscopic structural states that arise in lattice curvature zones during high-temperature cross rolling followed by cold rolling with smooth rolls. The described effects are explained by the self-consistent mechanical behavior of hcp ε martensite laths in fcc austenite grains and bcc α′ martensite laths formed in cold rolling of the steel after high-temperature cross rolling.

Original languageEnglish
Pages (from-to)382-391
Number of pages10
JournalPhysical Mesomechanics
Volume22
Issue number5
DOIs
Publication statusPublished - 1 Sep 2019

Fingerprint

Austenitic steel
martensite
Martensite
curvature
cold rolling
steels
Cold rolling
substructures
wear resistance
Wear resistance
Fatigue of materials
grain formation
Bending (deformation)
fatigue life
austenitic stainless steels
Steel
Crystal microstructure
Austenitic stainless steel
austenite
Austenite

Keywords

  • damping effect
  • dynamic rotations
  • fatigue failure
  • lattice curvature
  • nanoscale mesoscopic structural states
  • wear resistance

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces

Cite this

Effect of Nanoscale Mesoscopic Structural States Associated with Lattice Curvature on the Mechanical Behavior of Fe-Cr-Mn Austenitic Steel. / Panin, V. E.; Surikova, N. S.; Panin, S. V.; Shugurov, A. R.; Vlasov, I. V.

In: Physical Mesomechanics, Vol. 22, No. 5, 01.09.2019, p. 382-391.

Research output: Contribution to journalArticle

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