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形状记忆合金(SMAs)由于具有多种特殊性能,如伪弹性、形状记忆效应、生物相容性、高的比强度、高耐蚀性、高耐磨性、良好的抗疲劳性能,成为不断发展的先进材料。因此,形状记忆合金被广泛应用于航空航天、医疗和汽车等方面。然而,由于严重的加工硬化和伪弹性,形状记忆合金的传统加工会造成严重的刀具磨损、费时以及低维畸变。这些材料可以使用非传统的方法,如激光加工、水射流加工(WJM)和电化学加工(ECM)进行机械加工,但这些方法受限于该材料的复杂性和力学性能。而电火花加工(EDM)和线切割(WEDM)能够很好的加工具有复杂形状和精密尺寸的形状记忆合金。介绍大量关于使用电火花和线切割加工形状记忆合金的研究,分析不同研究的差异,并展望未来的研究趋势。
Shape memory alloys (SMAs) continue to evolve because of their unique properties such as pseudoelasticity, shape memory effect, biocompatibility, high specific strength, high corrosion resistance, high wear resistance and good fatigue resistance Advanced materials. Therefore, shape memory alloys are widely used in aerospace, medical and automotive areas. However, traditional machining of shape memory alloys can result in severe tool wear, time-consuming and low-dimensional distortion due to severe work hardening and pseudo-elasticity. These materials can be machined using unconventional methods such as laser machining, water jet machining (WJM) and electrochemical machining (ECM), but these methods are limited by the material’s complexity and mechanical properties. EDM and WEDM are well suited to shape memory alloys with complex shapes and precise dimensions. Describes a large number of studies on the use of EDM and wire EDM shape memory alloys to analyze the differences between different studies and to look forward to future research trends.