{"title":"On 3D Printing of 17-4 PH SS Rectangular Waveguides with Laser Powder Bed Fusion","authors":"Bharat Kalia, Rupinder Singh","doi":"10.1007/s40009-025-01642-1","DOIUrl":null,"url":null,"abstract":"<div><p>Laser powder bed fusion (LPBF) is one of the promising techniques for fabricating prototypes with acceptable dimensional accuracy. However, little has been reported on the fabrication of rectangular waveguides (WR) by LPBF using 17-4 precipitate-hardened (PH) stainless steel (SS). This study reports the fabrication of WR (1.0 mm × 0.3 mm) with 17-4 PH SS by LPBF at laser power (LP) 120W, scanning speed (ScS) 1200 mm/s, hatch distance (HD) 50 µm, and layer thickness (LT) 30 µm for resonance frequency (R<sub>f</sub>) applications in terahertz (THz) frequency range of the electromagnetic spectrum. The results based on scanning electron microscopy (SEM) suggest that the LPBF at the selected parameters resulted in surface roughness (Ra) and dimensional deviation (Δd) in the range of 0.43–0.52 µm and + 0.010/− 0.030 mm.</p></div>","PeriodicalId":717,"journal":{"name":"National Academy Science Letters","volume":"49 4","pages":"515 - 522"},"PeriodicalIF":1.1000,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"National Academy Science Letters","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1007/s40009-025-01642-1","RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Laser powder bed fusion (LPBF) is one of the promising techniques for fabricating prototypes with acceptable dimensional accuracy. However, little has been reported on the fabrication of rectangular waveguides (WR) by LPBF using 17-4 precipitate-hardened (PH) stainless steel (SS). This study reports the fabrication of WR (1.0 mm × 0.3 mm) with 17-4 PH SS by LPBF at laser power (LP) 120W, scanning speed (ScS) 1200 mm/s, hatch distance (HD) 50 µm, and layer thickness (LT) 30 µm for resonance frequency (Rf) applications in terahertz (THz) frequency range of the electromagnetic spectrum. The results based on scanning electron microscopy (SEM) suggest that the LPBF at the selected parameters resulted in surface roughness (Ra) and dimensional deviation (Δd) in the range of 0.43–0.52 µm and + 0.010/− 0.030 mm.
期刊介绍：
The National Academy Science Letters is published by the National Academy of Sciences, India, since 1978. The publication of this unique journal was started with a view to give quick and wide publicity to the innovations in all fields of science
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