Presentation Details
Defect density-based modelling of work hardening and recovery in fully lamellar TiAl alloys
Friday, 13 Oct 2017; 09:10 - 09:30 in room 7.01
In Session:
CS07: Crystal Mechanics
Friday, 13 Oct 2017; 08:30 - 10:30 in room 7.01
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1st and presenting Author
Jan Eike Schnabel
Materials Research, Materials Mechanics
Helmholtz-Zentrum Geesthacht
Geesthacht, Germany
Materials Research, Materials Mechanics
Helmholtz-Zentrum Geesthacht
Geesthacht, Germany
2nd Author
Swantje Bargmann
Chair of Solid Mechanics
University of Wuppertal
Wuppertal, Germany
Chair of Solid Mechanics
University of Wuppertal
Wuppertal, Germany
Micro Abstract:
The dense arrangement of different microstructural interfaces in fully lamellar TiAl alloys necessitates microstructure informed modelling in order to predict the macroscopic mechanical behavior. Microtwinning within the lamellae leads to further interface related strengthening. The presented crystal plasticity model incorporates the evolution of dislocation density and afore mentioned twins during plastic deformation and accounts for thermally activated recovery of said defects.