High temperature deformation and fracture behaviour of 316L stainless steel under high strain rate loading

Woei Shyan Lee, Chi Feng Lin, Tao Hsing Chen, Wen Zhen Luo

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

The high temperature deformation and fracture behaviour of 316L stainless steel under high strain rate loading conditions are investigated by means of a split Hopkinson pressure bar. Impact tests are performed at strain rates ranging from 1 × 10 3 s -1 to 5 × 10 3 s -1 and temperatures between 25 °C and 800 °C. The experimental results indicate that the flow response and fracture characteristics of 316L stainless steel are significantly dependent on the strain rate and temperature. The fracture analysis results indicate that the 316L specimens fail predominantly as the result of intensive localised shearing. Furthermore, it is shown that the flow localisation effect leads to the formation of adiabatic shear bands. The fracture surfaces of the deformed 316L specimens are characterised by a dimple-like structure with knobby features. The knobby features are thought to be the result of a rise in the local temperature to a value greater than the melting point.

Original languageEnglish
Pages (from-to)226-234
Number of pages9
JournalJournal of Nuclear Materials
Volume420
Issue number1-3
DOIs
Publication statusPublished - 2012 Jan 1

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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