0603586 - FZÚ 2025 RIV NL eng J - Journal Article
Pathak, Sunil - Stránský, Ondřej - Šmaus, Jan - Kopeček, Jaromír - Narayanan, J.A. - Kaufman, Jan - Beránek, L. - Böhm, Marek - Brajer, Jan - Mocek, Tomáš
Influence on micro-geometry and surface characteristics of laser powder bed fusion built 17-4 PH miniature spur gears in laser shock peening.
Advances in Industrial and Manufacturing Engineering. Roč. 9, Nov (2024), č. článku 100151. ISSN 2666-9129. E-ISSN 2666-9129
R&D Projects: GA MŠMT(CZ) EH22_008/0004573; GA MŠMT LM2023051
Institutional support: RVO:68378271
Keywords : LPBF * laser shock peening * gear * microgeomtery * residual stresses * microstructure
OECD category: Materials engineering
Impact factor: 3.9, year: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1016/j.aime.2024.100151

Micro-geometrical errors, surface roughness, and surface integrity (microstructure, residual stresses, microhardness) play an important role in defining the quality of the gears as they directly affect their noise, vibration characteristics and service life during their use. In the present work, underwater laser shock peening (LSP) is employed to improve the quality of the laser powder bed fusion built 17-4 PH small-size spur gears (12 mm outside diameter). LSP was employed near the spur gear root, and effects were measured in terms of residual stresses, variation in microgeometry errors, surface roughness, porosity, microstructure, and microhardness.
Permanent Link: https://hdl.handle.net/11104/0360941