This study examines the relationship between thermal histories obtained via IR imagery and final local mechanical properties in Inconel 718 walls built via directed energy deposition. Four processing conditions were designed to provide distinct thermal histories in twelve built walls. Mechanical properties were obtained from miniature tensile samples cut from various locations within each wall. The work identified two critical temperature ranges associated with microstructure evolution and demonstrated the capability to predict properties based on time spent in the two ranges, paving the way for future process control.

中文翻译：

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将增材制造的零件拉伸性能与热指标相关联

本研究检查了通过 IR 图像获得的热历史与通过定向能量沉积构建的 Inconel 718 墙体的最终局部机械性能之间的关系。设计了四种处理条件，以在十二个建造的墙壁中提供不同的热历史。从每个壁内不同位置切割的微型拉伸样品获得机械性能。该工作确定了与微观结构演变相关的两个临界温度范围，并展示了根据在这两个范围内花费的时间来预测性能的能力，为未来的过程控制铺平了道路。