Mechanical behavior of a stainless steel material at elevated temperatures and high strain rates

Hong Zhang, Tao Suo, Yu Long Li

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Dynamic compressive mechanical behavior of a stainless steel material was studied at elevated temperatures and high strain ratesby using split Hopkinson pressure bar (SHPB), which was installed with heating and synchro assembly system. The tests were carried out at loading rates ranging from 1100 to 16000 s -1 and temperatures from 20 to 800°C. The strain rate and temperature sensitivities of flow stress are analyzed. The intrinsic mechanism is discussed according to the thermally activated dislocation motion theory. The results show that the material has evident heat softening effect and strain rate hardening effect. And both the strain rate and temperature sensitivities of the material are increased at higher temperatures.

Original languageEnglish
Pages (from-to)78-83
Number of pages6
JournalHangkong Cailiao Xuebao/Journal of Aeronautical Materials
Volume32
Issue number1
DOIs
StatePublished - Feb 2012

Keywords

  • Adiabatic temperature rise
  • Dynamic compression
  • Flow stress
  • Strain rate sensitivity
  • Temperature sensitivity

Fingerprint

Dive into the research topics of 'Mechanical behavior of a stainless steel material at elevated temperatures and high strain rates'. Together they form a unique fingerprint.

Cite this