Determination of the mechanical properties of extruded pure magnesium during tension-tension low-cycle fatigue using ultrasonic testing

Hideki Yamagishi, Mikio Fukuhara, Akihiko Chiba

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The mechanical behavior of extruded pure magnesium during low-cycle fatigue at room temperature was investigated using ultrasonic reflection methods with longitudinal and shear waves. The sound velocities and calculated mechanical properties. Young's and shear moduli, decreased by a large percentage with an increased number of cycles. However, Poisson's ratio and bulk modulus increased before a macroscopic crack occurred. The fatigue behavior was compared with the high-cycle one from a previous study. The fatigue stress amplitude was normalized using 0.2% proof strength to provide a reasonable figure for the mechanical property degradation that would accompany the development of void defect mainly caused by cleavage crack. The damage phase data were determined using optical microscopy, scanning electron microscopy, and Vickers hardness tests

Original languageEnglish
Pages (from-to)2025-2032
Number of pages8
JournalMaterials Transactions
Volume51
Issue number11
DOIs
Publication statusPublished - 2010 Nov

Keywords

  • Bulk modulus
  • Low-cycle fatigue
  • Poisson's ratio
  • Pure magnesium
  • Shear modulus
  • Ultrasonic testing
  • Young's modulus

ASJC Scopus subject areas

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

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