Details
| Original language | English |
|---|---|
| Pages (from-to) | 214-217 |
| Number of pages | 4 |
| Journal | Procedia CIRP |
| Volume | 74 |
| Early online date | 3 Sept 2018 |
| Publication status | Published - 2018 |
| Event | 10th CIRP Conference on Photonic Technologies, LANE 2018 - Furth, Germany Duration: 3 Sept 2018 → 6 Sept 2018 |
Abstract
Components in aircraft engines and gas turbines are exposed to extreme conditions in order to increase performance and efficiency of the overall engine, hence there is an increasing need for cost-effective and time-efficient repair strategies. Presented here are two novel approaches to the repair of Nickel-based components. The hybrid brazing process involves the application of a repair coating, a nickel-based filler material, a NiCoCrAlY and an aluminium layer, by thermal spraying followed by a heat treatment and combined brazing-aluminizing process. This significantly shortens the conventional repair brazing process and yields superior results. Single-crystal additive repair by laser cladding is applied for the repair of small or large defects in single-crystal turbine blades by enabling monocrystalline solidification of the cladded material by use of a temperature gradient, thereby allowing for the regeneration of these expensive components. The novel approach that combines layer-wise addition of material and laser melting enables the formation of highly monocrystalline structures.
Keywords
- Brazing, Coating, Hybrid joining, Laser cladding, Nickel-based superalloys
ASJC Scopus subject areas
- Engineering(all)
- Control and Systems Engineering
- Engineering(all)
- Industrial and Manufacturing Engineering
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In: Procedia CIRP, Vol. 74, 2018, p. 214-217.
Research output: Contribution to journal › Conference article › Research › peer review
}
TY - JOUR
T1 - Advanced high pressure turbine blade repair technologies
AU - Alfred, Irene
AU - Nicolaus, Martin
AU - Hermsdorf, Jörg
AU - Kaierle, Stefan
AU - Möhwald, Kai
AU - Maier, Hans Jürgen
AU - Wesling, Volker
N1 - Funding information: The work presented here was supported by the German Research Foundation (DFG) within the scope of the subprojects B1: Near-net shape turbine blade repair using a joining and coating hybrid process and B5: Single-crystal laser cladding of the Collaborative Research Centre 871 “Product Regeneration”. The authors would like to thank the DFG for their support.
PY - 2018
Y1 - 2018
N2 - Components in aircraft engines and gas turbines are exposed to extreme conditions in order to increase performance and efficiency of the overall engine, hence there is an increasing need for cost-effective and time-efficient repair strategies. Presented here are two novel approaches to the repair of Nickel-based components. The hybrid brazing process involves the application of a repair coating, a nickel-based filler material, a NiCoCrAlY and an aluminium layer, by thermal spraying followed by a heat treatment and combined brazing-aluminizing process. This significantly shortens the conventional repair brazing process and yields superior results. Single-crystal additive repair by laser cladding is applied for the repair of small or large defects in single-crystal turbine blades by enabling monocrystalline solidification of the cladded material by use of a temperature gradient, thereby allowing for the regeneration of these expensive components. The novel approach that combines layer-wise addition of material and laser melting enables the formation of highly monocrystalline structures.
AB - Components in aircraft engines and gas turbines are exposed to extreme conditions in order to increase performance and efficiency of the overall engine, hence there is an increasing need for cost-effective and time-efficient repair strategies. Presented here are two novel approaches to the repair of Nickel-based components. The hybrid brazing process involves the application of a repair coating, a nickel-based filler material, a NiCoCrAlY and an aluminium layer, by thermal spraying followed by a heat treatment and combined brazing-aluminizing process. This significantly shortens the conventional repair brazing process and yields superior results. Single-crystal additive repair by laser cladding is applied for the repair of small or large defects in single-crystal turbine blades by enabling monocrystalline solidification of the cladded material by use of a temperature gradient, thereby allowing for the regeneration of these expensive components. The novel approach that combines layer-wise addition of material and laser melting enables the formation of highly monocrystalline structures.
KW - Brazing
KW - Coating
KW - Hybrid joining
KW - Laser cladding
KW - Nickel-based superalloys
UR - http://www.scopus.com/inward/record.url?scp=85057376262&partnerID=8YFLogxK
U2 - 10.1016/j.procir.2018.08.097
DO - 10.1016/j.procir.2018.08.097
M3 - Conference article
AN - SCOPUS:85057376262
VL - 74
SP - 214
EP - 217
JO - Procedia CIRP
JF - Procedia CIRP
SN - 2212-8271
T2 - 10th CIRP Conference on Photonic Technologies, LANE 2018
Y2 - 3 September 2018 through 6 September 2018
ER -