Issue 51

M. S. Bennouna et alii, Frattura ed Integrità Strutturale, 51 (2020) 254-266; DOI: 10.3221/IGF-ESIS.51.20 257 Figure 4 : Illustration of the plastic deformation zones during the CGP process. Figure 5 : Sample after plastic deformation of the CGP process. R ESULT AND DISCUSSION Influence of the number of cycles o demonstrate how the number of cycles affects the equivalent strain that different surfaces of the samples undergo (Fig.6) the process was repeated three times (cycles). The results obtained for the different cycles are illustrated in Figs. 7 to 12. Fig.7 illustrates the evolution of Voe Mises during three different cycles of CGP. Figure 6 : Different paths selected for study. T