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Materials Science in Additive Manufacturing                             Mechanical properties of NiTi TPMS




                         A                       B                       C













                         D                       E                       F













            Figure 12. Fracture morphology of sheet-shaped gyroid cellular structures (SGCS) with different aging times. (A) 0 h; (B) 2 h; (C) 4 h; (D) 6 h; (E) 8 h;
            and (F) 10 h.

            A                                B                               C












            D                                E                                F

















            Figure 13. Superelasticity behavior of rod-shaped gyroid cellular structure (RGCS) under different strains after different aging times. (A) 0 h; (B) 2 h;
            (C) 4 h; (D) 6 h; (E) 8 h; and (F) 10 h.

            a small number of dimples in localized areas, indicative of   behavior. As the aging time extended beyond 4h, the
            brittle fracture mechanisms. Conversely, after aging heat   dimples in RGCS (Figure 11C-E) became shallower than
            treatment, RGCS-A2 displayed a plethora of dimples on its   RGCS-A2, with tear ridges featuring planes also observed
            fracture section, signaling a transition to ductile fracture   in RGCS-A4 to RGCS-A10. This result underscores a shift



            Volume 3 Issue 2 (2024)                         13                             doi: 10.36922/msam.3137
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