Recovery behaviour of pure magnesium in cyclic compression-quick unloading-recovery process at room temperature investigated by AE

Yunping Li, Manabu Enoki

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Anelastic recovery of pure magnesium at room temperature was investigated in cyclic compression-quick unloading-recovery process where acoustic emission (AE) measurement was applied to analyze the dynamic behaviour and mechanism of anelastic recovery process. By analyzing the RMS voltage of AE signals from both the background and the recovery process, it was observed that the recovery process was accompanied with a gradual decrease in the strength of AE signals. The AE signals in recovery processes of different strain levels seem to be due to the same source of detwinning process because the same slope between amplitude and logarithmic AE count of AE signals in different strain levels was found in the strong clastic waves related to detwinning process. The AE behaviors in recovery process were described in details by AE count rate and AE incubation time. The relations between twinning or detwinning and AE counts in both deformation and anelastic recovery process could be expressed by a general equation.

Original languageEnglish
Pages (from-to)1800-1805
Number of pages6
JournalMaterials Transactions
Volume49
Issue number8
DOIs
Publication statusPublished - 2008 Aug

Keywords

  • Acoustic emission
  • Anelastic recovery
  • Detwinning
  • Psuedoelasticity
  • Pure magnesium
  • Twinning

ASJC Scopus subject areas

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

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