The paper deals with the evaluation of mechanical properties of 3D-printed samples based on high-strength steel powder system maraging steel using direct metal laser sintering (DMLS), which is currently being put into technical practice. The novelty of this article is that it analyzes mechanical properties of samples both printed and age hardened as well as examining the fracture surfaces. When comparing the manufacturer’s range with our recorded values, samples from Set 1 demonstrated strength ranging from 1110 to ultimate 1140 MPa. Samples from Set 2 showed tensile strength values that were just below average. Our recorded range was from 1920 to ultimate 2000 MPa while the manufacturer reported a range from 1950 to 2150 MPa. The tensile strength was in the range from 841 to ultimate 852 MPa in Set 1, and from 1110 to ultimate 1130 MPa in Set 2.

中文翻译：

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使用热处理工艺通过直接金属激光烧结提高 3D 打印样品的机械性能

该论文涉及使用直接金属激光烧结 (DMLS) 对基于高强度钢粉末系统马氏体时效钢的 3D 打印样品的力学性能进行评估，目前正在技术实践中。本文的新颖之处在于它分析了印刷和时效硬化样品的机械性能，并检查了断裂表面。将制造商的范围与我们记录的值进行比较时，第 1 组的样品显示出的强度范围为 1110 至极限 1140 MPa。第 2 组的样品显示出略低于平均值的拉伸强度值。我们记录的范围是从 1920 年到极限 2000 兆帕，而制造商报告的范围是从 1950 到 2150 兆帕。第 1 组的拉伸强度范围为 841 至极限 852 MPa，第 2 组的拉伸强度为 1110 至极限 1130 MPa。