Complete precipitate dissolution during adiabatic shear localisation in a Ni-based superalloy
Journal article, 2020

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.

atom probe tomography

precipitation

superalloy

Adiabatic shear bands

Author

Magnus Hörnqvist Colliander

Chalmers, Physics, Microstructure Physics

Gustav Sundell

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Martin Andersson Group

Mattias Thuvander

Chalmers, Physics, Microstructure Physics

Philosophical Magazine Letters

0950-0839 (ISSN) 1362-3036 (eISSN)

Vol. 100 12 561-570

Subject Categories

Mineral and Mine Engineering

Metallurgy and Metallic Materials

Condensed Matter Physics

Infrastructure

Chalmers Materials Analysis Laboratory

Areas of Advance

Materials Science

DOI

10.1080/09500839.2020.1820595

More information

Latest update

1/5/2021 7