Abstract Additive Manufacture (AM) enables the fabrication of highly complex lattice structures with exceptional engineering properties. Inconel is a technically useful material in that it provides high resistance to oxidisation, creep and loss of mechanical properties at elevated temperatures. The combination of Inconel material properties and the geometric freedom of AM provides a unique opportunity for the fabrication of engineered structures with exceptional strength and stiffness at elevated temperatures, as for example is required for high temperature turbomachinery. Despite the associated technical opportunities, there exists no design data on the mechanical response, deformation characteristics and failure modes of AM Inconel 625 lattice structures. This research provides a comprehensive reference for the mechanical response of Inconel 625 lattice structures fabricated by Selective Laser Melting (SLM). Furthermore, the high ductility of Inconel 625 lattice enables novel insight into the structural mechanics of AM lattice, and the associated deformation photography provides a reference for the validation and verification of numerical models of AM lattice behaviour.

中文翻译：

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通过选择性激光熔化 (SLM) 制造的 Inconel 625 晶格结构：机械性能、变形和失效模式

摘要 增材制造 (AM) 能够制造具有卓越工程特性的高度复杂的晶格结构。Inconel 是一种技术上有用的材料，因为它在高温下具有很高的抗氧化、抗蠕变和机械性能损失的能力。Inconel 材料特性和 AM 的几何自由度的结合为制造在高温下具有卓越强度和刚度的工程结构提供了独特的机会，例如高温涡轮机械所需要的。尽管有相关的技术机会，但没有关于 AM Inconel 625 晶格结构的机械响应、变形特性和失效模式的设计数据。该研究为选择性激光熔化 (SLM) 制造的 Inconel 625 晶格结构的机械响应提供了全面的参考。此外，Inconel 625 晶格的高延展性使人们对 AM 晶格的结构力学有了新的了解，相关的变形摄影为 AM 晶格行为的数值模型的验证和验证提供了参考。