TY - GEN
T1 - Neutron diffraction study of elastoplastic behaviour of Al/SiCp metal matrix composite during tensile loading and unloading
AU - Wroński, Sebastian
AU - Baczmański, Andrzej
AU - Gaj, Anita
AU - Wierzbanowski, Krzysztof
AU - Fitzpatrick, Michael E.
AU - Klosek, Vincent
AU - Lodini, Alain
AU - Marciszko, Marianna
PY - 2014
Y1 - 2014
N2 - The aim of the present work is to study effects occurring during elastoplastic 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 the 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 predictions.
AB - The aim of the present work is to study effects occurring during elastoplastic 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 the 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 predictions.
KW - Elasto-plastic deformation
KW - Metal matrix composite
KW - Residual stress
KW - Self-consistent model
KW - Tensile load
KW - X-ray diffraction
UR - https://www.scopus.com/pages/publications/84891296669
U2 - 10.4028/www.scientific.net/MSF.772.117
DO - 10.4028/www.scientific.net/MSF.772.117
M3 - Conference proceeding
AN - SCOPUS:84891296669
SN - 9783037859117
VL - 772
T3 - Materials Science Forum
SP - 117
EP - 121
BT - Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation VI
T2 - 6th International Conference on Mechanical Stress Evaluation by Neutrons and Synchrotron Radiation
Y2 - 7 September 2011 through 9 September 2011
ER -