Time- and Cycle-Dependent Crack Propagation in Haynes 282
2016 (English)In: Journal of Materials Science and Engineering: A, ISSN 2161-6213, Vol. 658, 463-471 p.Article in journal (Refereed) Published
Haynes 282 is a promising superalloy candidate for several high-temperature applications in both aero and land-based gas turbine engines. To study the crack growth behaviour under time-dependent conditions relevant to such applications, a test program was carried out at room temperature up to 700 °C with conditions ranging from pure cyclic to sustained tensile loading. At 650 °C and high stress intensity factors the crack growth was fully time-dependent for dwell-times of 90 s and longer. At lower stress intensities, the behaviour was mainly controlled by the cyclic loading, even under dwell conditions. The behaviour under dwell-fatigue conditions was well described by a liner superposition model.
Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 658, 463-471 p.
Nickel based superalloys, fatigue, fracture, mechanical characterisation, electron microscopy
Other Materials Engineering
IdentifiersURN: urn:nbn:se:liu:diva-126922DOI: 10.1016/j.msea.2016.01.111ISI: 000372560800054OAI: oai:DiVA.org:liu-126922DiVA: diva2:917773
Funding agencies: Agora Materiae, graduate school, Faculty grant SFO-MAT-LiU [2009-00971]; Swedish Energy Agency; Siemens Industrial Turbomachinery AB; GKN Aerospace Engine Systems; Royal Institute of Technology through the Swedish research program TURBO POWER2016-04-072016-04-072016-05-03