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首页> 外文会议>ASME conference on smart materials, adaptive structures and intelligent systems >ON THE PROPERTIES OF NI-RICH NITI SHAPE MEMORY PARTS PRODUCED BY SELECTIVE LASER MELTING
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ON THE PROPERTIES OF NI-RICH NITI SHAPE MEMORY PARTS PRODUCED BY SELECTIVE LASER MELTING

机译：基于选择性激光熔化产生的富镍的NITI形状记忆部件的性能

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Processing of Nickel-Titanium (NiTi) shape memory alloys (SMAs) is challenging because smallest compositional variances and all types of microstructural features strongly affect the elementary processes of the martensitic transformation and thus the functional properties of the material. Against this background, powder metallurgical near net shape methods are attractive for the production of NiTi components. Especially additive manufacturing technologies (AM) seem to provide high potential, although they have received only little attention for processing NiTi so far. This work is the first to report on pseudoelastic properties of additive manufactured Ni-rich NiTi. We show how to establish pseudoelasticity in NiTi samples prepared by the additive manufacturing technique Selective Laser Melting (SLM). Therefore, we analyze phase transformation behavior, mechanical characteristics and functional properties of our materials subjected to different heat treatments. The obtained results are compared to the behavior of conventional NiTi. The presented results clearly indicate that SLM provides a promising processing route for the fabrication of high quality NiTi parts.
机译：镍 - 钛（NITI）形状记忆合金（SMA）的加工是挑战性的，因为最小的组成方差和所有类型的微观结构特征都强烈影响马氏体转化的基本过程，从而强烈地影响材料的功能性质。在此背景下，粉末冶金附近的净形状方法对于生产Niti组分具有吸引力。特别是添加剂制造技术（AM）似乎提供高​​潜力，尽管他们已经收到了迄今为​​止加工尼提的很少的关注。这项工作是第一个报告添加剂富含Ni的NIII的伪弹性性能。我们展示了如何在由添加剂制造技术选择性激光熔化（SLM）制备的NITI样品中建立伪弹性。因此，我们分析了对不同热处理的材料的相变行为，机械特性和功能性能。将得到的结果与常规Niti的行为进行比较。所提出的结果清楚地表明，SLM提供了用于制备高质量NITI部件的有前途的加工途径。

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