this work, the dependence of microstructure of in situ titanium aluminide and silicide composites on chemical composition and conditions of reactive sintering was studied. It was found that the rate of reactive sintering process increases with growing silicon content. In addition, heating rate strongly affects the structure of Ti-Al-Si alloys with lower content of silicon represented by TiAl23Si10 alloy. The structure consisting of homogeneously distributed Ti 5 Si 3 particles in TiAl matrix can be obtained by rapid heating over 250 K min 21 in this material. TiAl15Si15 alloy forms the desired two phase TiAl-Ti 5 Si 3 structure when a heating rate of at least 10 K min 21 and temperature over 750uC are applied. Replacement of aluminium and silicon powders by Al-Si alloy positively affects the reactive sintering process. The structure of these materials can be refined by milling of Al-Si master alloy powder to the ,100 mm fraction, reducing the size of Ti 5 Si 3 particles and porosity significantly.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.