Additive manufacturing (AM) of alloys creates segregated microstructures with significant differences from those of traditional wrought alloys. Understanding how the local build conditions generate specific microstructures is essential for developing post-build heat treatments with the goal of producing parts with reliable and predictable properties. This research examines the position- and orientation-dependent microstructures within IN625 Additive Manufacturing Benchmark Test specimens, including three-dimensional AM builds and individual laser traces on bare metal plates. Detailed characterizations of the solidification microstructures, compositional heterogeneities, grain structures and orientations, and melt pool geometries are described.

中文翻译：

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IN625增材制造基准测试工件中特定位置的微结构表征

合金的增材制造（AM）会产生偏析的微结构，与传统的锻造合金相比，它们具有显着差异。了解局部构建条件如何生成特定的微结构对于开发构建后热处理至关重要，目的是生产具有可靠和可预测特性的零件。这项研究检查了IN625增材制造基准测试样本中与位置和方向有关的微观结构，包括三维AM构造和裸金属板上的单个激光迹线。描述了凝固组织，成分不均匀性，晶粒结构和取向以及熔池几何形状的详细特征。