Characterisation of residual strains and recrystallisation of single crystal Ni-base superalloy turbine blades

DOI

Ni-base single crystal (SX) superalloys are advanced materials that are used in modern land-based gas turbine blades to achieve high operation performance. However localised plastic damage of the blades caused by the mould removal process from the cast blades can result in residual stresses and subsequent recrystallisation during high temperature homogenisation heat treatment, which can be detrimental to the performance due to the inherent lack of grain boundary strengthening. The proposal therefore aims to characterise the degree and location of recrystallisation and residual strains in as manufactured turbine blades by neutron diffraction. The key objective of the experiment is to characterise the depth distribution of recrystallised microstructure and residual strain from the surface of the blade into the bulk in a SX component of complex geometry.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24068779
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24068779
Provenance
Creator Dr Alex Evans; Dr Stephane Pierret
Publisher ISIS Neutron and Muon Source
Publication Year 2012
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2009-06-07T12:47:23Z
Temporal Coverage End 2009-06-11T10:54:03Z