Kudva, S.A.Anne, G.Ramesh, S.Sharma, P.Jagadeesh, C.Ritti, L.Naik, G.M.Divya Deepak, G.D.2026-02-042024Journal of Mechanical Science and Technology, 2024, 38, 3, pp. 1175-11851738494Xhttps://doi.org/10.1007/s12206-024-0214-xhttps://idr.nitk.ac.in/handle/123456789/21245In this investigation, the impact of the cryo-ball burnishing process on both the mechanical and corrosion properties of the Mg-4Zn-1Sr alloy was systematically explored. To better understand the plastic deformation occurring in Mg-4Zn-1Sr during cryo-burnishing, a finite element analysis (FEA) model was developed. The microstructure of cryo-ball burnished samples underwent characterization through scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffractometry (XRD), and surface properties were assessed using atomic force microscopy (AFM). Additionally, electrochemical impedance spectroscopy and potentiodynamic polarization tests were conducted in a simulated body fluid using an electrochemical workstation. Experimental findings revealed significant grain refinement and the presence of residual dislocations during the cryo-burnishing process, as evident in TEM analysis. XRD analysis indicated the presence of Mg, Mg<inf>17</inf>Sr<inf>2</inf> and SrZn<inf>2</inf> phases, with observable peak broadening in the cryo-burnished samples, attributed to structural refinement and lattice strain incorporation. Microhardness values increased with greater depth of press, with the DFN 1071 sample displaying a hardness of 80 ± 4 Hv (Ra = 1.853 µm), marking a 54 % improvement compared to the homogenized sample. The enhanced corrosion resistance of the Mg-4Zn-1Sr alloy due to cryo-burnishing is attributed to the combined effects of grain refinement, residual dislocations, and intermetallic phases. © The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2024.Binary alloysBody fluidsCorrosion resistanceCorrosion resistant alloysCorrosive effectsElectrochemical corrosionElectrochemical impedance spectroscopyGrain size and shapeHigh resolution transmission electron microscopyMagnesium alloysScanning electron microscopyTernary alloysX ray diffraction analysisZinc alloysBall-burnishingBurnishing processCorrosion behaviourCryo-burnishingFinite element analyseFinite element analysis modelingGrains refinementMechanical and corrosion propertiesResidual dislocationsSurface characteristicsGrain refinement