TY - JOUR N2 - The paper presents the results of research of impact strength of aluminum alloy EN AC-44200 based composite materials reinforced with alumina particles. The research was carried out applying the materials produced by the pressure infiltration method of ceramic preforms made of Al2O3 particles of 3-6m with the liquid EN AC-44200 Al alloy. The research was aimed at determining the composite resistance to dynamic loads, taking into account the volume of reinforcing particles (from 10 to 40% by volume) at an ambient of 23°C and at elevated temperatures to a maximum of 300°C. The results of this study were referred to the unreinforced matrix EN AC-44200 and to its hardness and tensile strength. Based on microscopic studies, an analysis and description of crack mechanics of the tested materials were performed. Structural analysis of a fracture surface, material structures under the crack surfaces of the matrix and cracking of the reinforcing particles were performed. L1 - http://journals.pan.pl/Content/102051/PDF/afe-2017-0094.pdf L2 - http://journals.pan.pl/Content/102051 PY - 2017 IS - No 3 DO - 10.1515/afe-2017-0094 KW - Composites KW - Aluminum oxide particles KW - Impact strength KW - tensile strength KW - Squeeze casting A1 - Kurzawa, A. A1 - Kaczmar, J.W. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol. 17 DA - 2017 T1 - Impact Strength of Composite Materials Based on EN AC-44200 Matrix Reinforced with Al2O3 Particles UR - http://journals.pan.pl/dlibra/publication/edition/102051 T2 - Archives of Foundry Engineering ER -