Title: Fatique Crack Growth in Nickel-Based Superalloys at Elevated Temperatures
Authors: ABBADI MohammedHAEHNER PeterBELOUETTAR SalimZENASNI Mohammed
Citation: MATERIALS & DESIGN vol. 32 no. 5 p. 2710-2716
Publisher: ELSEVIER SCI LTD
Publication Year: 2011
JRC Publication N°: JRC62842
ISSN: 0261-3069
URI: http://www.elsevier.com/locate/matdes
http://publications.jrc.ec.europa.eu/repository/handle/JRC62842
DOI: 10.1016/j.matdes.2011.01.018
Type: Articles in Journals
Abstract: In the present work, fatigue crack growth in two nickel-base mono-materials and one bi-material has been investigated at 450 and 550 oC. The electric potential drop technique was used for the estimation of the crack length during cycling. The crack was found to grow faster in the coarse grained material than in the fine grained one. The fracture surface observation showed that the peformance of the bi-material is linked to the mono-material content at the interface. Finite element computation showed a good agreement between numerical and experimental results in term of stress intensity factor.
JRC Institute:Institute for Energy and Transport

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