Journal
METALS
Volume 9, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/met9020186
Keywords
magnesium alloys; processing; microstructure; mechanical properties; fatigue
Funding
- Ministry of Science of RF [RFMEFI58317X0070]
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The tensile strength, fatigue, and corrosion fatigue performance of the magnesium alloy ZX40 benefit strongly from hybrid deformation processing involving warm equal-channel angular pressing (ECAP) at the first step and room temperature rotary swaging at the second. The general corrosion resistance improved as well, though to a lesser extent. The observed strengthening is associated with a combined effect of substantial microstructure refinement down to the nanoscale, reducing deformation twinning activity, dislocation accumulation, and texture transformation. The ultimate tensile strength and the endurance limit in the ultrafine-grained material reached or exceeded 380 and 120 MPa, respectively, which are remarkable values for this nominally low strength alloy.
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