%0 Journal Article
%A Ebrahimzade, V.
%A Haasler, D.
%A Malzbender, J.
%T Failure mechanism and lifetime of various laser-drilled APS-TBC systems under LCF conditions
%J Engineering failure analysis
%V 127
%@ 1350-6307
%C Oxford [u.a.]
%I Elsevier Science
%M FZJ-2021-02832
%P 105526 -
%D 2021
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000691760600004
%R 10.1016/j.engfailanal.2021.105526
%U https://juser.fz-juelich.de/record/893793