Abstract

The deformation behavior of 3D 03X17H14M2 steel samples with various lattice structures created by selective laser melting has been studied under compression conditions using the digital image correlation method. Spatially temporal patterns of localization of transverse (ε_xx) and longitudinal (ε_yy) deformations of topological structure actual types have been studied. It has been found that it is possible to achieve a relative density of 20% for 3D printed products with lattice G-structures and cell sizes of 1.5 and 3 mm. However, all lattice 3D samples lose their plasticity, the Young’s modulus decreases by more than an order of magnitude, and the Poisson’s ratio increases by 1.3–2 times compared to the corresponding parameters for solid 3D samples.

中文翻译：

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03X17H14M2钢的3D打印样品的晶格结构中的变形局部化

摘要

使用数字图像相关方法研究了在压缩条件下通过选择性激光熔化产生的具有各种晶格结构的3D 03X17H14M2钢样品的变形行为。研究了拓扑结构实际类型的横向（_εxx）和纵向（_εyy）变形的时空分布。已经发现，对于具有点阵G结构且单元尺寸为1.5和3mm的3D打印产品，可以实现20％的相对密度。但是，与固体3D样品的相应参数相比，所有晶格3D样品都失去了可塑性，杨氏模量下降了一个数量级以上，泊松比增加了1.3–2倍。