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 language | English (US) |
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Pages (from-to) | 179-182 |
Number of pages | 4 |
Journal | CIRP Annals |
Volume | 70 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2021 |
Keywords
- Additive manufacturing
- Hybrid manufacturing
- Magnesium
ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering