OBRABOTKAMETALLOV Vol. 25 No. 3 2023 technology Ta b l e 2 The results of comparing the parameters of the stress-strain state of the FE micromodel with the theoretical mechanism [18] Materials/type of grinding Relative penetration depth hl/H Reduced normal stress σ/k Theoretical model [18] FE micro model Theoretical model [18] FE micro model AMg3-D16/40 grit 0.62 0.86 -2.92 -2.45 AMg3-D16/120 grit 0.61 0.4 -2.75 -1.9 Hence, it follows that a more significant factor in the fracture of surface oxide films is the high values of the stress state index σ/T, which are characteristic of surfaces free from contact with the opposite material. Conclusion In this work, computer FE simulation of macroscale processes of accumulative roll bonding occurring on the surfaces of AMg3 and D16 alloys is performed. An analysis of the surface profiles of materials after various modes of grinding is carried out. The parameters of stress-strain state were studied and compared with the same parameters of the theoretical mechanism. Fig. 8. Areas of the most probable fracture of the surface oxide layers on the D16 alloy
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