Design, Properties, and Multi-field Application Progress of Porous Structures of NiTi Shape-Memory Alloy Prepared by Selective Laser Melting

Abstract:

NiTi shape-memory alloys are extensively used across various fields due to their distinctive shape-memory effect and superelasticity. Additive manufacturing technique enables the precise fabrication of high-performance complex structures of NiTi shape-memory alloys, facilitating innovative structural designs. This paper reviewed the applications of NiTi porous structures prepared by selective laser melting (SLM) in the fields of biomedical and mechanical engineering. It summarized the characteristics of various novel porous structures of SLM-NiTi across various applications, explored innovative design methodologies for these structures, and discussed their corresponding advantageous properties, which include compressive performance, superelasticity, shape-memory effect, energy absorption capability, and biocompatibility. These design methodologies and structures can provide references for the design and application of high-performance NiTi structures prepared by additive manufacturing.