SCATTER IN DWELL TIME CRACKING FOR A NI-BASED SUPERALLOY IN COMBINATION WITH OVERLOADS
2015 (English)In: PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 7A, ASME Press, 2015, no V07AT28A004Conference paper (Refereed)Text
In this paper scatter in crack growth for dwell time loadings combination with overloads has been investigated. Multiple Jsts were performed for surface cracks at 5500C in the commonly sed high temperature material Inconel 718. The test specimens -iginate from two different batches which also provides for a disission of how material properties affect the dwell time damage rnd overload impact. In combination with these tests an investiation of the microstructure was also carried out, which shows 9w it influences the growth rate. The results from this study show tat, in order to take overloads into consideration when analysing,ectrum loadings containing dwell times, one needs a substantial mount of material data available as the scatter seen from one atch to the other is of significant proportions.
Place, publisher, year, edition, pages
ASME Press, 2015. no V07AT28A004
Other Materials Engineering
IdentifiersURN: urn:nbn:se:liu:diva-129516DOI: 10.1115/GT2015-42709ISI: 000375810700014ISBN: 978-0-7918-5676-5OAI: oai:DiVA.org:liu-129516DiVA: diva2:940021
ASME Turbo Expo: Turbine Technical Conference and Exposition