Journal Article

FZJ-2021-02832

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Failure mechanism and lifetime of various laser-drilled APS-TBC systems under LCF conditions

Ebrahimzade, V. (Corresponding author) ; Haasler, D. ; Malzbender, J.FZJ*

2021
Elsevier Science Oxford [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/28040  doi:10.1016/j.engfailanal.2021.105526

Abstract: 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.

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 1221 - Fundamentals and Materials (POF4-122) (POF4-122)

Appears in the scientific report 2021

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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