R. Khorshidi - Faculty of Metallurgical and Materials Engineering, Semnan University, Semnan, P.O. Box: ۳۵۱۳۱-۱۹۱۱۱, Iran
M. Emamy - School of Metallurgy and Materials, University of Tehran, Tehran, P.O. Box: ۱۴۳۹۵-۷۳۱, Iran
S. Ghaiour - Faculty of Engineering, Islamic Azad University, Tehran, Iran

In present research, an attempt was made to investigate the influence of different concentrations of Fe (0.5, 1, 1.5, 2 and 3 wt.%) on the tensile properties and fracture behaviour of in situ Al-15wt.%Mg2Si metal matrix composite. The composite ingots were made by casting process. In this work, the matrix composite were characterized by optical microscopy, scanning electron microscopy (SEM) and tensile tests experiment. The obtained results depicted optimum Fe (1 wt.%) levels for improving tensile properties. In the point of fracture behaviour, Fe-containing specimens showed a brittle mode of failure and acceptable cohesion between Mg2Si and matrix.

Al-Mg2Si composite; Casting; Tensile properties; Brittle fracture