Neutron Diffraction Study of Elastoplastic Behaviour of Al/SiCp Metal Matrix Composite during Tensile Loading and Unloading

Sebastian Wroński; Andrzej Baczmanski; Anita Gaj; Krzysztof Wierzbanowski; Michael E. Fitzpatrick; Vincent Klosek; Alain Lodini; Marianna Marciszko

doi:10.4028/www.scientific.net/MSF.772.117

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HomeMaterials Science ForumMaterials Science Forum Vol. 772Neutron Diffraction Study of Elastoplastic...

Neutron Diffraction Study of Elastoplastic Behaviour of Al/SiCp Metal Matrix Composite during Tensile Loading and Unloading

Abstract:

The aim of the present work is to study effects occurring during elatoplastic deformation and unloading of Al/SiCp metal–matrix composite material. We have measured lattice strains for both phases independently using two separated diffraction peaks (the 111 reflections of Al and SiC) during in situ tensile testing. Lattice strains were measured in the direction parallel to the applied load. The results were compared with an elastoplastic model in order to find parameters determining the plastic deformation of Al matrix (critical resolved shear stress and hardening parameter). We have found that during initial deformation relaxation of the thermal stresses occurs in both phases. Afterwards, the distribution of strains measured during the in situ test and unloading of the sample agree very well with self-consistent model prediction.

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Periodical:

Materials Science Forum (Volume 772)

Pages:

117-121

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.772.117

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Online since:

November 2013

Authors:

Sebastian Wroński, Andrzej Baczmanski, Anita Gaj, Krzysztof Wierzbanowski, Michael E. Fitzpatrick, Vincent Klosek, Alain Lodini, Marianna Marciszko

Keywords:

Elasto-Plastic Deformation, Metal Matrix Composite (MMC), Residual Stress, Self-Consistent Model, Tensile Load, X-Ray Diffraction (XRD)

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