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Microstructure and surface quality of SLM printed miniature helical gear in LSPwC
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SYSNO ASEP 0571965 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Microstructure and surface quality of SLM printed miniature helical gear in LSPwC Author(s) Pathak, Sunil (FZU-D) ORCID, RID
Böhm, Marek (FZU-D) ORCID
Kaufman, Jan (FZU-D) ORCID
Kopeček, Jaromír (FZU-D) RID, ORCID
Zulic, Sanin (FZU-D)
Stránský, Ondřej (FZU-D) ORCID
Brajer, Jan (FZU-D) ORCID
Beránek, L. (CZ)
Mocek, Tomáš (FZU-D) RID, ORCID, SAINumber of authors 9 Source Title Surface Engineering. - : Taylor & Francis - ISSN 0267-0844
Roč. 39, č. 2 (2023), s. 229-237Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords laser shock peening ; residual stresses ; meso size gear ; helical gear ; microstructure ; grain refinement ; dislocation ; surface roughness Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) Research Infrastructure CzechNanoLab II - 90251 - Vysoké učení technické v Brně / Středoevropský technologický institut Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000986141400001 EID SCOPUS 85159127834 DOI 10.1080/02670844.2023.2207934 Annotation The present work describes the influence of underwater laser shock peening without coating on selective laser melting manufactured meso-size helical gears.Five experiments were conducted using energies in the 200mJ up to 1J,while the spot size and overlap were kept constant as 1mm and 90%,respectively.Responses were measured and compared in terms of surface residual stresses,surface roughness,and microstructure of LSPwC-treated samples.Results show the development of significant compressive residual stresses in the root of the LSPwC processed helical gear,where it changes the state from tensile +45MPa to compressive −421MPa.Surface roughness has shown improvement,while volumetric material peak confirms the reduction by over 50%.Microstructure study was performed at the surface and by cross-section using scanning electron microscopy and electron backscatter diffraction analysis.The grain refinement and change in misorientation were observed,confirming plastic deformation. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://hdl.handle.net/11104/0342821
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