Effect of strain rate and temperature on mechanical properties and fracture mode of high strength precipitation hardened ferritic steels

S. Vaynman*, M. E. Fine, S. Lee, Horacio Dante Espinosa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

The effect of strain rate on the flow stress of a low carbon high strength ferritic steel that contains nanometer size Cu-Ni-Al precipitates is found to be much less than that of HSLA 65 that does not have such precipitates. This result is in agreement with the theory that such precipitates locally lower the Peierls stress for screw dislocations in body-centered cubic iron. The fracture mode in the steel is ductile over the wide ranges of strain rate and temperature investigated.

Original languageEnglish (US)
Pages (from-to)351-354
Number of pages4
JournalScripta Materialia
Volume55
Issue number4
DOIs
StatePublished - Aug 1 2006

Keywords

  • Fracture
  • Steel
  • Strain rate effect

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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