Metastable Al–Si–Ni Alloys for Additive Manufacturing: Structural Stability and Energy Release during Heating
Tibor Bedo,
Bela Varga,
Daniel Cristea,
Alexandra Nitoi,
Andrea Gatto,
Elena Bassoli,
Georgiana Bulai,
Ioana-Laura Velicu,
Ioana Ghiuta,
Sorin Munteanu,
Mihai Alin Pop,
Camelia Gabor,
Mihaela Cosnita,
Luminita Parv,
Daniel Munteanu
Affiliations
Tibor Bedo
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Bela Varga
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Daniel Cristea
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Alexandra Nitoi
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Andrea Gatto
Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, 41100 Modena, Italy
Elena Bassoli
Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, 41100 Modena, Italy
Georgiana Bulai
Integrated Centre for Environmental Science Studies in the North-East Development Region–CERNESIM, “Al. I. Cuza” University of Iasi, 700506 Iasi, Romania
Ioana-Laura Velicu
Faculty of Physics, Alexandru Ioan Cuza University, 700506 Iasi, Romania
Ioana Ghiuta
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Sorin Munteanu
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Mihai Alin Pop
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Camelia Gabor
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Mihaela Cosnita
Centre Product Design for Sustainable Development, Transilvania University of Brasov, Eroilor 29, 500036 Brasov, Romania
Luminita Parv
Department of Manufacturing Engineering, Transilvania University of Brasov, 500036 Brasov, Romania
Daniel Munteanu
Department of Materials Science, Transilvania University of Brasov, 500036 Brasov, Romania
Rapid solidification with high cooling rates of metal alloys determines both the improvement of mechanical properties, due to the finishing of the structure, as well as obtaining metastable structures in the form of supersaturated or amorphous/nano solid solutions, which could potentially confer the material outstanding properties. It is of particular interest to use the energies released during the heating stage for these materials, due to the potentially lower input energy required to melt/fuse these materials. This phenomenon could add to the development and diversification of additive manufacturing technologies. The paper presents results concerning the structural development and phase transformation of metastable structures from Al−Si−Ni-based alloys, obtained by melt spinning and atomization techniques. It was observed that the structural transformations occurring during the heating process, starting from metastable structures, generate significant amounts of energy. This is of practical importance in the use of metallic powders in additive manufacturing technology, due to potentially reduced energy input.
