Pure niobium manufactured by Laser-Based Powder Bed Fusion: influence of process parameters and supports on as-built surface quality

IF 2.9 3区 工程技术 Q2 AUTOMATION & CONTROL SYSTEMS International Journal of Advanced Manufacturing Technology Pub Date : 2024-04-01 DOI:10.1007/s00170-024-13249-9
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Abstract

Niobium (Nb) is a transition metal commonly used as an alloying element for increasing strength, toughness, corrosion resistance, and other properties of steel and superalloys. Pure Nb, however, is a very interesting metal for its excellent superconductivity. This makes it suitable for producing superconducting magnets and devices for particle acceleration systems and particle physics research (e.g., superconducting resonant cavities). In this work, the production of Nb by the Laser-Based Powder Bed Fusion (PBF-LB/M, also known as Laser Powder Bed Fusion or LPBF) process was examined. Manufacturing parameters were investigated to achieve additively manufactured parts with a relative density higher than 99.5% and showing a down-skin surface roughness in the range of 20–70 μm, depending on the inclination angle. Studies related to the limiting angle of self-supported Nb parts were also conducted, and innovative non-contact supporting structures were successfully developed. These allowed to creation of parts with very small overhang angles, without compromising the downward-facing surfaces; indeed at the same time, the as-built surface finish was improved.

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利用激光粉末床熔融技术制造纯铌:工艺参数和支撑物对成品表面质量的影响
摘要 铌(Nb)是一种过渡金属,通常用作合金元素,以提高钢和超级合金的强度、韧性、耐腐蚀性和其他性能。然而,纯铌是一种非常有趣的金属,因为它具有出色的超导性。这使它适合生产超导磁体和用于粒子加速系统和粒子物理研究的设备(如超导谐振腔)。在这项工作中,研究了通过激光粉末床熔融(PBF-LB/M,也称为激光粉末床熔融或 LPBF)工艺生产铌。对制造参数进行了研究,以实现相对密度高于 99.5%、下表面粗糙度在 20-70 μm 范围内(取决于倾斜角度)的快速制造部件。此外,还对自支撑铌零件的极限角度进行了研究,并成功开发出创新的非接触支撑结构。这样就可以在不影响朝下表面的情况下,制造出悬角很小的零件;同时,还提高了成品的表面光洁度。
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来源期刊
CiteScore
5.70
自引率
17.60%
发文量
2008
审稿时长
62 days
期刊介绍: The International Journal of Advanced Manufacturing Technology bridges the gap between pure research journals and the more practical publications on advanced manufacturing and systems. It therefore provides an outstanding forum for papers covering applications-based research topics relevant to manufacturing processes, machines and process integration.
期刊最新文献
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