Fatigue Crack Growth behaviour of Inconel 718 - the Concept of a Damaged Zone Caused by High Temperature Hold Times
2011 (English)In: Procedia Engineering, ISSN 1877-7058, Vol. 10, 2821-2826 p.Article in journal (Refereed) Published
Fatigue crack growth testing of Inconel 718 has been carried out at the temperatures 550 °C and 650 °C. The tests were conducted using a mix of hold times and pure cyclic loading, referred to as block tests. From the test results, the existence of an embrittled volume or damaged zone in the vicinity of the crack tip has been revealed. It has been found that the evolution of this damaged zone can be sufficiently well described using a power law function with an exponent n = 0.25.
Place, publisher, year, edition, pages
Elsevier , 2011. Vol. 10, 2821-2826 p.
nickel base superalloys, fatigue crack propagation, Inconel 718, hold times, grain boundary embrittlement
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-70552DOI: 10.1016/j.proeng.2011.04.469OAI: oai:DiVA.org:liu-70552DiVA: diva2:440286