Stress corrosion in Mg alloys with stress gradient

Shun ichiro Tanaka, Shuichi Iwata

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The effect of stress on a corrosion mode of a thixomolded magnesium alloy in a NaCl aqueous solution was studied with elucidating the time dependent characteristics of corrosion products and an actual concentrated stress value in α-Mg and Mg17A112 phases around an artificial notch. The corrosion mode was quite different depending on the sign of the stresses; a fine and dense amorphous hydro-oxide formed in the region of tensile stress whereas a coarse amorphous oxide formed in that of compressive stress. The concentrated tensile stress at the notch root relaxed within two minutes by the corrosion followed by gradual relaxation to zero.

Original languageEnglish
Pages (from-to)245-250
Number of pages6
JournalInternational Journal of Materials and Product Technology
Issue numberSPEC. ISS. VOL.1
Publication statusPublished - 2001

Keywords

  • Concentrated stress
  • Magnesium alloy
  • Measurement
  • Micro-area stress
  • Stress corrosion

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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