Deformation behavior and spall fracture of the Hadfield steel under shock-wave loading

S. F. Gnyusov, V. P. Rotshtein, S. D. Polevin, S. A. Kitsanov

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Comparative studies of regularities in plastic deformation and fracture of the Hadfield polycrystalline steel upon quasi-static tension, impact failure, and shock-wave loading with rear spall are performed. The SINUS-7 accelerator was used as a shock-wave generator. The electron beam parameters of the accelerator were the following: maximum electron energy was 1. 35 MeV, pulse duration at half-maximum was 45 ns, maximum energy density on a target was 3. 4·1010 W/cm2, shock-wave amplitude was ~20 GPa, and strain rate was ~106 s-1. It is established that the failure mechanism changes from ductile transgranular to mixed ductile-brittle intergranular one when going from quasi-static tensile and Charpy impact tests to shock-wave loading. It is demonstrated that a reason for the intergranular spallation is the strain localization near the grain boundaries containing a carbide interlayer.

Original languageEnglish
Pages (from-to)1046-1052
Number of pages7
JournalRussian Physics Journal
Volume53
Issue number10
DOIs
Publication statusPublished - Mar 2011

Keywords

  • Hadfield steel
  • High-current electron beam
  • Spall fracture

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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