TY  - JOUR
AU  - Ebrahimzade, V.
AU  - Haasler, D.
AU  - Malzbender, J.
TI  - Failure mechanism and lifetime of various laser-drilled APS-TBC systems under LCF conditions
JO  - Engineering failure analysis
VL  - 127
SN  - 1350-6307
CY  - Oxford [u.a.]
PB  - Elsevier Science
M1  - FZJ-2021-02832
SP  - 105526 -
PY  - 2021
AB  - Laser drilling is a highly efficient method to produce cooling holes in TBC systems. Low-Cycle Fatigue tests on APS TBC-coated nickel-based superalloy specimens were performed for undrilled and laser-drilled samples, using a long-pulsed and an ultra-short pulsed laser method at two different angles. The tests were conducted at 850 °C with two mechanical strain ranges of 0.38% and 0.67% to analyse the influence of the quality of the laser drilled holes on failure mechanism and lifetime. Ultra-short pulsed laser and inclined cooling holes showed longer life time compared to the other drilled variants.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000691760600004
DO  - DOI:10.1016/j.engfailanal.2021.105526
UR  - https://juser.fz-juelich.de/record/893793
ER  -