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Mojtaba Jalali,Kaivan Mohammadi,Mohammad R. Movahhedy,Farzad Karimi,Sayed Khatiboleslam Sadrnezhaad,Stanislav V. Chernyshikhin,Igor V. Shishkovsky 대한금속·재료학회 2023 METALS AND MATERIALS International Vol.29 No.9
Nitinol shape memory alloy is a biocompatible material that is suitable for biomedical applications due to its superelasticity,shape memory effect, good corrosion and fatigue resistance, and sound damping properties. With the selective laser melting(SLM) additive manufacturing process, it is possible to produce customized NiTi implants in the form of porous metamaterialswith complex geometries. This paper presents a review of modeling, production, and application of NiTi implants. First, the fundamentals of shape memory alloys and the SLM process are summarized. Then, the effects of the SLM processon the transformation temperatures and the impacts of Heat treatments on these temperatures for additive manufacturedparts are discussed. Next, a review of recent experimental works on the mechanical properties of NiTi lattice structures arepresented regarding the required functional properties of orthopedic implants. Also, in vitro and in vivo biological studies ofNiTi implants are reviewed. Finally, constitutive models developed for SMAs are presented and finite element simulationsof NiTi lattice structures are discussed.