NiTi形状记忆合金选区激光熔化多孔结构的设计、性能与多领域应用进展

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

摘要:

NiTi形状记忆合金凭借其独特的形状记忆效应与超弹性，已在多个领域得到广泛应用。增材制造技术实现了NiTi形状记忆合金高性能复杂结构精准成形，助力新型结构设计。本文回顾了选区激光熔化（SLM）制备的NiTi多孔结构在生物医学和机械工程领域的应用情况，综述了不同应用场景下各类新型SLM-NiTi多孔结构的特点，探讨了该类结构的创新性设计方法，并分析了其相应的优异性能，包括压缩性能、超弹性、形状记忆效应、能量吸收能力及生物相容性，为增材制造高性能NiTi结构的设计及应用提供参考。

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.