PSI - Issue 72

Dragana Mihajlović et al. / Procedia Structural Integrity 72 (2025) 195 – 202

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Fig. 5. Force – cross-section thickness reduction curves for Ti-13Nb-13Zr alloy (a) before and (b) after anodic oxidation process, obtained using von Mises criterion and complete Gurson model 4. Conclusions The results showed that anodic oxidation process led to creation of an inhomogeneous morphology of nanostructured oxide layer consisting of nanotubes with different dimensions. The tensile testing on micro tensile specimens (MTS) revealed that anodic oxidation process leads to reduction of the physical and mechanical properties of TNZ alloy. The finite element method (FEM) calculations for simulation of the tensile test of the TNZ alloy, before and after to anodic oxidation, were conducted in Abaqus software package using complete Gurson model (CGM). Results show that t the CGM for an initial damage parameter value of 0.005 predicts failure at the