Available online at www.sciencedirect.com ScienceDirect Materials Today: Proceedings 11 (2019) 386–391 www.materialstoday.com/proceedings 2214-7853 © 2019 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Modern Trends in Manufacturing Technologies and Equipment 2018: Materials Science. ICMTMTE_2018 Aluminum Matrix In-Situ Composites Reinforced with Mg 2 Si and Al 3 Ti Evgeny Prusov a, *, Vladislav Deev b , Evgeny Rakhuba b a Vladimir State University named after Alexander and Nikolay Stoletovs, Gorky St. 87, Vladimir, 600000, Russian Federation b National University of Science & Technology MISIS, Leninsky Pr., 4, Moscow, 119049, Russian Federation Abstract Cast aluminum matrix composites are promising materials for the production of responsible and particularly critical parts used in the high-technology fields of industry such as aerospace, automotive, electronics, etc. In this work, hybrid aluminum matrix composite reinforced with in-situ formed Mg2Si and Al3Ti particles were synthesized successfully in gravity casting conditions, and the influence of thermal conditions of solidification on the structural parameters of endogenous reinforcing phases was investigated. The results show that an increase in the cooling rate during solidification due to the application of a copper mold instead steel mold leads to reduction in the average size of the Mg2Si primary crystals, improvement of the distribution uniformity and significant increasing of their total quantity; at the same time, the average size of Al3Ti particles decreases substantially but their quantity is approximately the same for both types of molds. © 2019 Elsevier Ltd. All rights reserved. Selection and/or Peer-review under responsibility of International Conference on Modern Trends in Manufacturing Technologies and Equipment 2018: Materials Science. Keywords: Al-matrix in-situ composites; hybrid reinforcement; microstructiral characterization; particle size; solidification conditions 1. Introduction The problem of creating materials with a predetermined set of properties for various branches of industry is one of the most important in the field of materials science and technology. The possibilities for further improving the mechanical and operational properties of standard alloys are insufficient for their successful competition with * Corresponding author. Tel.: +7-962-094-4974. E-mail address: eprusov@mail.ru