Reducing corrosion of additive manufactured magnesium alloys by interlayer ultrasonic peening

M. P. Sealy, R. Karunakaran, S. Ortgies, G. Madireddy, A. P. Malshe, K. P. Rajurkar

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Additive manufad (AM) magn alloys corrode rapidly due to tensile stress and coarse microstructures. Cyclically combining (hybridizing) additive manufacturing with interlayer ultrasonic peening was proposed as a solution to improve corrosion resistance of additive manufactured magnesium WE43 alloy through strengthening mechanisms and compressive residual stress. Applying interlayer peening work hardened discrete layers and formed a glocal integrity of regional grain refinement and subsurface compressive residual stress barriers. Tensile residual stress that typically accelerates corrosion decreased 90%. Results showed time-resolved control over corrosion was attainable by interlayer peening, and local corrosion within print cells decreased 57% with respect to as-printed WE43.

Original languageEnglish (US)
Pages (from-to)179-182
Number of pages4
JournalCIRP Annals
Volume70
Issue number1
DOIs
StatePublished - Jan 2021

Keywords

  • Additive manufacturing
  • Hybrid manufacturing
  • Magnesium

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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