RT Journal Article
T1 Laser direct writing of Co-superalloy lines for micro-fabrication applications
A1 Del Val Garcia, Jesús
A1 Comesaña Piñeiro, Rafael
A1 Riveiro Rodríguez, Antonio
A1 Lusquiños Rodríguez, Fernando
A1 Quintero Martínez, Félix
A1 Boutinguiza Larosi, Mohamed
A1 Pou Saracho, Juan María
K1 3328 Procesos Tecnológicos
AB Co-superalloy lines were deposited on stainless steel by a direct laser writing technique: laser micro-cladding by lateral powder injection.  With the aim of producing small strips as thin and narrow as possible, the mean size of the powder used was 8 μm. Using such fine particles makes conventional powder feeders useless, due to the formation of agglomerates unable to be feed. Therefore a new powder feeder, here described, was designed, constructed and tested. A processing parameters map was established, identifying the working window for laser micro-cladding.  The new power feeder and a high brightness, good beam quality fiber laser allowed producing fine lines just 14 μm wide and 7.2 μm thick. Microstructure and mechanical properties, in terms of Hardness and Elastic Modulus, were evaluated confirming that the fine strips maintain the main characteristics of the hardfacing alloy.  Potential applications include micro-part fabrication and repairing such as micro-moulds, and production of 3D parts at sub-millimetre scales.
PB Surface and Coatings Technology
SN 02578972
YR 2018
FD 2018-07-15
LK http://hdl.handle.net/11093/6246
UL http://hdl.handle.net/11093/6246
LA eng
NO Surface and Coatings Technology, 345, 76-88 (2018)
NO Xunta de Galicia | Ref. ED431B 2016/042
DS Investigo
RD 25-abr-2025