Details
| Original language | English |
|---|---|
| Pages (from-to) | 762-765 |
| Number of pages | 4 |
| Journal | Procedia CIRP |
| Volume | 111 |
| Early online date | 6 Sept 2022 |
| Publication status | Published - 2022 |
| Event | 12th CIRP Conference on Photonic Technologies, LANE 2022 - Erlangen, Germany Duration: 4 Sept 2022 → 8 Sept 2022 |
Abstract
Aluminium alloys, like AlMgSi1 and AlMg3, cannot be joined in industrial processes by laser beam brazing without the use of fluxes due to their resistant oxide layer. The aim of this study is to dispense with the use of flux. For the investigations, an oxygen-free atmosphere was created by using the highly reactive gas monosilane and thus achieving O2 partial pressures of 10-18 mbar. After removal of the oxides by a laser source with 1064 nm wavelength, pulse energies of max. 0.3 µJ and pulse durations of 45 ns, reoxidation is prevented by the oxygen-free atmosphere, so that brazing is carried out on an oxide-free material surface. The bead on plate seams show a materially bonded brazed joint in cross-section. Reference experiments without monosilane either show no wetting or an increased melting of base material. The influence of laser beam power for brazing, pulse energy for deoxidation and wire feed was investigated.
Keywords
- aluminium alloy, laser beam brazing, monosilane, oxide, XHV-adequate
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Procedia CIRP, Vol. 111, 2022, p. 762-765.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Influence of an oxygen-free atmosphere on laser beam brazing of aluminium with prior surface deoxidation by pulsed laser radiation
AU - Aman, Witali
AU - Nothdurft, Sarah
AU - Hermsdorf, Jörg
AU - Kaierle, Stefan
AU - Szafarska, Maik
AU - Gustus, René
AU - Maus-Friedrichs, Wolfgang
AU - Overmeyer, Ludger
N1 - Funding Information: Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) - Project-ID 394563137 - SFB 1368.
PY - 2022
Y1 - 2022
N2 - Aluminium alloys, like AlMgSi1 and AlMg3, cannot be joined in industrial processes by laser beam brazing without the use of fluxes due to their resistant oxide layer. The aim of this study is to dispense with the use of flux. For the investigations, an oxygen-free atmosphere was created by using the highly reactive gas monosilane and thus achieving O2 partial pressures of 10-18 mbar. After removal of the oxides by a laser source with 1064 nm wavelength, pulse energies of max. 0.3 µJ and pulse durations of 45 ns, reoxidation is prevented by the oxygen-free atmosphere, so that brazing is carried out on an oxide-free material surface. The bead on plate seams show a materially bonded brazed joint in cross-section. Reference experiments without monosilane either show no wetting or an increased melting of base material. The influence of laser beam power for brazing, pulse energy for deoxidation and wire feed was investigated.
AB - Aluminium alloys, like AlMgSi1 and AlMg3, cannot be joined in industrial processes by laser beam brazing without the use of fluxes due to their resistant oxide layer. The aim of this study is to dispense with the use of flux. For the investigations, an oxygen-free atmosphere was created by using the highly reactive gas monosilane and thus achieving O2 partial pressures of 10-18 mbar. After removal of the oxides by a laser source with 1064 nm wavelength, pulse energies of max. 0.3 µJ and pulse durations of 45 ns, reoxidation is prevented by the oxygen-free atmosphere, so that brazing is carried out on an oxide-free material surface. The bead on plate seams show a materially bonded brazed joint in cross-section. Reference experiments without monosilane either show no wetting or an increased melting of base material. The influence of laser beam power for brazing, pulse energy for deoxidation and wire feed was investigated.
KW - aluminium alloy
KW - laser beam brazing
KW - monosilane
KW - oxide
KW - XHV-adequate
UR - http://www.scopus.com/inward/record.url?scp=85141897482&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2022.08.122
DO - 10.1016/j.procir.2022.08.122
M3 - Conference article
AN - SCOPUS:85141897482
VL - 111
SP - 762
EP - 765
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 12th CIRP Conference on Photonic Technologies, LANE 2022
Y2 - 4 September 2022 through 8 September 2022
ER -