Towards dynamic tension-compression asymmetry and relative deformation mechanisms in magnesium

C. Kale, S. Turnage, D. Z. Avery, H. El Kadiri, J. B. Jordon, K. N. Solanki

Research output: Contribution to journalArticle

Abstract

We present the first results of high-rate tension followed by compressive loading on a textured AZ31 alloy using a novel split-Hopkinson-pressure-bar (SHPB). The traditional-SHPB was modified in order to apply tension followed by compression along the rolling direction within few millisecond differences and a strain-rate of 103 s−1. The initial and post-deformed microstructure was examined by electron backscatter diffraction. The results reveal a reduced tension–compression asymmetry along with a shallower than the traditional sigmoidal-curve, indicating a significant influence of forward tensile loading on the subsequent compression behavior, manifested by the role of adiabatic-heating along with some unique deformation behavior.

Original languageEnglish (US)
Article number100543
JournalMaterialia
Volume9
DOIs
Publication statusPublished - Mar 2020

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Keywords

  • Dynamic behavior
  • Split Hopkinson pressure bar
  • Tension-compression asymmetry
  • Twinning

ASJC Scopus subject areas

  • Materials Science(all)

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