Solidification is an important phase transformation in materials science and engineering. The imposition of a wide range of operational conditions in foundry and castings process generates, as a direct consequence, a diversity of solidification structures. A low carbon steel mold was used to promote a unidirectional heat flow during solidification and to obtain the arrangement of the microstructure. The aim of the present work is to investigate the influence of microstructure on mechanical properties of nonferrous metals, specifically aluminum alloys and copper alloys. Experimental results include phases, primary and secondary dendrite arm spacings, hardness, ultimate tensile strength and yield strength as a function of solidification conditions imposed by the metal/mold system. Finer microstructures tend to improve the mechanical resistance of aluminum alloys and copper alloys.
Givanildo Alves dos Santos Lecturer in the specialty Behavior and Selection of Materials for Mechanical Engineering by the Polytechnic School of the University of São Paulo (EPUSP), 2019. He received a Ph.D. in Aerospace Engineering from the Technological Institute of Aeronautics in 2010, Master in Aerospace Engineering from the Technological Institute of Aeronautics in 2005, with Post-Doctoral in the area of Science and Technology of Materials held at the Institute of Energy and Nuclear Research (IPEN), 2016. He is currently a professor in the area of Mechanics and the Postgraduate Program in Mechanical Engineering at Federal Institute of São Paulo (IFSP). He has experience in the area of Mechanical Engineering and Materials and Metallurgical Engineering, working mainly on the following topics: materials technology, product development and manufacturing processes.
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