Details
| Original language | English |
|---|---|
| Article number | 022310 |
| Pages (from-to) | 022310 |
| Journal | Journal of laser applications |
| Volume | 29 |
| Issue number | 2 |
| Publication status | Published - 1 May 2017 |
Abstract
The objective of this work was to achieve a single crystalline (SX) clad on the tip of an SX turbine blade. It was assumed that remelting could extend the SX-height by resolidifying the misoriented volume of its clad tracks. Thus, remelting was used as a tool to ease the clad epitaxy. All tests were performed with SX Ni-based superalloys CMSX-4 or PWA 1426. To determine the remelting parameters, the following methodology was devised: An ideal energy input per unit was determined for each clad track shape by applying a variable laser power during the process while traveling steadily. The energy value was defined using a combination of cross-sectional analyses and different laser parameters, thereby reducing the number of required tests to find the effective track remelting parameters. This was then tested thoroughly on five differently shaped CMSX-4 clad tracks to evaluate its validity. Thereafter, the remelting parameters from one chosen CMSX-4 track were applied to a similarly shaped PWA 1426 track, resulting in a complete SX clad track. This SX track was used to form the SX deposition on top of the blade, which was also made of PWA 1426. The tests to evaluate the remelting methodology were carried out on (010)/[100] or (010)/[001] crystalline orientations, which are equivalent to the orientations found on a turbine blade tip.
Keywords
- laser cladding, single-crystal, superalloys, turbine blade repair
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Biomedical Engineering
- Physics and Astronomy(all)
- Instrumentation
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In: Journal of laser applications, Vol. 29, No. 2, 022310, 01.05.2017, p. 022310.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Turbine blade tip single crystalline clad deposition with applied remelting passes for well oriented volume extension
AU - Rottwinkel, B.
AU - Pereira, A.
AU - Alfred, I.
AU - Noelke, C.
AU - Wesling, V.
AU - Kaierle, S.
N1 - Publisher Copyright: © 2017 Laser Institute of America.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - The objective of this work was to achieve a single crystalline (SX) clad on the tip of an SX turbine blade. It was assumed that remelting could extend the SX-height by resolidifying the misoriented volume of its clad tracks. Thus, remelting was used as a tool to ease the clad epitaxy. All tests were performed with SX Ni-based superalloys CMSX-4 or PWA 1426. To determine the remelting parameters, the following methodology was devised: An ideal energy input per unit was determined for each clad track shape by applying a variable laser power during the process while traveling steadily. The energy value was defined using a combination of cross-sectional analyses and different laser parameters, thereby reducing the number of required tests to find the effective track remelting parameters. This was then tested thoroughly on five differently shaped CMSX-4 clad tracks to evaluate its validity. Thereafter, the remelting parameters from one chosen CMSX-4 track were applied to a similarly shaped PWA 1426 track, resulting in a complete SX clad track. This SX track was used to form the SX deposition on top of the blade, which was also made of PWA 1426. The tests to evaluate the remelting methodology were carried out on (010)/[100] or (010)/[001] crystalline orientations, which are equivalent to the orientations found on a turbine blade tip.
AB - The objective of this work was to achieve a single crystalline (SX) clad on the tip of an SX turbine blade. It was assumed that remelting could extend the SX-height by resolidifying the misoriented volume of its clad tracks. Thus, remelting was used as a tool to ease the clad epitaxy. All tests were performed with SX Ni-based superalloys CMSX-4 or PWA 1426. To determine the remelting parameters, the following methodology was devised: An ideal energy input per unit was determined for each clad track shape by applying a variable laser power during the process while traveling steadily. The energy value was defined using a combination of cross-sectional analyses and different laser parameters, thereby reducing the number of required tests to find the effective track remelting parameters. This was then tested thoroughly on five differently shaped CMSX-4 clad tracks to evaluate its validity. Thereafter, the remelting parameters from one chosen CMSX-4 track were applied to a similarly shaped PWA 1426 track, resulting in a complete SX clad track. This SX track was used to form the SX deposition on top of the blade, which was also made of PWA 1426. The tests to evaluate the remelting methodology were carried out on (010)/[100] or (010)/[001] crystalline orientations, which are equivalent to the orientations found on a turbine blade tip.
KW - laser cladding
KW - single-crystal
KW - superalloys
KW - turbine blade repair
UR - http://www.scopus.com/inward/record.url?scp=85021255440&partnerID=8YFLogxK
U2 - 10.2351/1.4983667
DO - 10.2351/1.4983667
M3 - Article
VL - 29
SP - 022310
JO - Journal of laser applications
JF - Journal of laser applications
SN - 1042-346X
IS - 2
M1 - 022310
ER -