Journal
PHILOSOPHICAL MAGAZINE LETTERS
Volume 100, Issue 12, Pages 561-570Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/09500839.2020.1820595
Keywords
Adiabatic shear bands; precipitation; atom probe tomography; superalloy
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Funding
- Swedish Innovation Agency (VINNOVA)
- GKN Aerospace in collaboration, through the National Aerospace Research Program (NFFP) [2010-01236]
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Whereas microstructure evolution in adiabatic shear bands have been thoroughly studied, reports on the stability of hardening precipitates during shear localisation are scarce. We report an atomic scale investigation of solute distribution in adiabatic shear bands in a precipitation strengthened Ni-Fe-based superalloy, showing that the hardening particles are completely dissolved. Temperature estimations indicate that peak temperatures in the shear band above the solvus limits of the precipitates are not unrealistic, and thus diffusion-assisted transformations during the severe plastic deformation cannot be ruled out.
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