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Numerical and experimental investigation of deformation behavior of a duplex microstructure of a g-TiAl alloy using crystal plasticity and two scale modeling approach

Kabir, Mohammad Rizviul and Chernova, Liudmila and Zotov, Nikolay and Bartsch, Marion (2009) Numerical and experimental investigation of deformation behavior of a duplex microstructure of a g-TiAl alloy using crystal plasticity and two scale modeling approach. TMS 2009, 15-19. Feb. 2009, San Franscisco, USA.

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Abstract

The 3-dimensional microstructure of a duplex g-TiAl has been modeled in a parameterized FE-model using a two scale approach (FE2-approach) for micro and macro coupling. The most important microstructural features, such as a2 and g-phases, their volume percents, orientations, lamellar and globular arrangements, were representatively incorporated. The microstructure information was experimentally determined by SEM, TEM and EBSD analysis. For describing the micromechanics of the phases a continuum based crystal plasticity model was used. The model parameters were validated on the microscopic level by nano-indentation testing and on the macroscopic level by tensile tests at room temperature. The global deformation behavior was explained fairly well by the slip interactions, the local stresses, and the local strains predicted by the modeling approach. The model can be used for optimizing the microstructure of polycrystalline materials for components.

Item URL in elib:https://elib.dlr.de/61326/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical and experimental investigation of deformation behavior of a duplex microstructure of a g-TiAl alloy using crystal plasticity and two scale modeling approach
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kabir, Mohammad RizviulWF, DLRUNSPECIFIED
Chernova, LiudmilaWF, DLRUNSPECIFIED
Zotov, NikolayRuhr-Universität BochumUNSPECIFIED
Bartsch, MarionWF, DLRUNSPECIFIED
Date:February 2009
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:TiAl Alloy, Multi-Scale Simulation, Crystal Plasticity
Event Title:TMS 2009
Event Location:San Franscisco, USA
Event Type:international Conference
Event Dates:15-19. Feb. 2009
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Kabir, Dr. -Ing Mohammad Rizviul
Deposited On:02 Dec 2009 16:30
Last Modified:15 Jan 2010 02:18

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