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Influence of the scanning strategy parameters upon the quality of the SLM parts

机译：扫描策略参数对SLM零件质量的影响

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Nowadays, metal additive manufacturing techniques, such as Selective Laser Melting (SLM), are becoming more important due to their ability to manufacture very complex functional components. This ability is very interesting to industries as aerospace and automotive. Nevertheless, the installation of this techniques isn’t as could be expected, mainly because of the high-quality requirements of the parts used in these industries. In this work the influence of several specific scanning strategy parameters and the post Heat Treatment (HT) used upon the microstructure and the hardness of the SLM parts have been analysed. For that, several stainless steel 17-4PH specimens were manufactured. Then, two different HTs were applied: stress relieving HT and stress relieving in combination with solution annealing and aging HTs. The hardness, microhardness and metallography general quality, were analysed for each specimen in order to determine the influence of the entire process in the quality of the parts.
机译：如今，由于它们制造非常复杂的功能成分的能力，金属添加剂制造技术如选择性激光熔化（SLM），变得越来越重要。随着航空航天和汽车的行业来说，这种能力非常有趣。尽管如此，这种技术的安装并不可以预期，主要是因为这些行业中使用的零件的高质量要求。在这项工作中，已经分析了在微观结构上使用的几种特定扫描策略参数和后热处理（HT）的影响以及SLM部件的硬度。为此，制造了几种不锈钢17-4ph标本。然后，应用两种不同的HTS：应激缓解HT和应激与溶液退火和老化HTS结合缓解。为每个试样分析硬度，微硬度和金属术一般质量，以确定整个过程在零件质量中的影响。

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