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Northover, Shirley M.
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Publications (11/11 displayed)
- 2016Investigating plastic deformation around a reheat-crack in a 316H austenitic stainless steel weldment by misorientation mappingcitations
- 2014Electron backscatter diffraction (EBSD) measurement of accumulated strain
- 2014The use of size distributions in determining growth mechanisms: the growth of grain boundary precipitates in cobalt-20 iron
- 2014Microstructures of ancient and modern cast silver–copper alloyscitations
- 2013Discontinuous precipitation in silver-copper alloys
- 2012Anelasticity in austenitic stainless steelcitations
- 2012Microstructures of cast silver-copper alloy archaeological artefacts
- 2011Copper for the navy
- 2011Measurement of residual stresses in a dissimilar metal welded pipe
- 2010The role of EBSD in studying creep in metals
- 2008Boundary selectivity of crack paths in corrosion fatigue of stainless steel
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document
Investigating plastic deformation around a reheat-crack in a 316H austenitic stainless steel weldment by misorientation mapping
Abstract
Creep degradation in austenitic stainless steels is associated with nucleation and growth of cavities that can link up to form micro- and macro- cracks, usually along grain boundaries. A reheat crack found near a header nozzle weld removed from a nuclear power station has been examined using both electron backscatter diffraction (EBSD) and hardness mapping. The EBSD studies revealed higher levels of lattice misorientation towards the weld region where the crack initiated with strain particularly concentrated at grain boundaries. The pattern of deformation shown by the EBSD measurements was confirmed by the hardness survey.