Complete precipitate dissolution during adiabatic shear localisation in a Ni-based superalloy
Artikel i vetenskaplig tidskrift, 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.

superalloy

atom probe tomography

Adiabatic shear bands

precipitation

Författare

Magnus Hörnqvist Colliander

Chalmers, Fysik, Mikrostrukturfysik

Gustav Sundell

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Martin Andersson Group

Mattias Thuvander

Chalmers, Fysik, Mikrostrukturfysik

Philosophical Magazine Letters

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

Vol. In Press

Ämneskategorier

Mineral- och gruvteknik

Metallurgi och metalliska material

Den kondenserade materiens fysik

Infrastruktur

Chalmers materialanalyslaboratorium

Styrkeområden

Materialvetenskap

DOI

10.1080/09500839.2020.1820595

Mer information

Senast uppdaterat

2020-11-27