Tiwan, Didik Nurhadiyanto, Mujiyono, Febrianto Amri Restadi, Tri Suryatno
Aluminium A356 is a metal that is widely used in industry, but aluminum does not have the best strength of other metals because it is soft so it can be improved by adding different alloy particles as needed. This research aims to examine the effect of adding titanium dioxide (TiO2) on the microstructure and mechanical properties of cast aluminum A356. The results of research on chemical composition tests show that the addition of titanium dioxide can change the chemical elements in aluminum A356. In the microstructure test, the higher the addition of titanium dioxide, the more dendrite structures are formed. The tensile test shows the highest tensile strength with an average stress of 143.65 MPa, strain of 4.90 % and elastic modulus of 12993.6 MPa. The Brinell hardness test recorded the highest value of 66.684 HB. Meanwhile, the Charpy impact test showed the highest toughness with an average value of 0.0506 Joule/mm2 and the type of fracture was brittle. © 2025 Author(s).
Department of Mechanical Engineering Education, Faculty of Engineering, Universitas Negeri Yogyakarta, Yogyakarta, Indonesia
