Amorphous and nanocrystalline metals/MAN


  • Walter José Botta Filho
  • Alberto Moreira Jorge Junior


  • Alberto Moreira Jorge Junior
  • Claudemiro Bolfarini
  • Claudio Shyinti Kiminami
  • Conrado Ramos Moreira Afonso
  • Guilherme Zepon
  • José Eduardo Spinelli
  • Tomaz Toshimi Ishikawa
  • Walter Jose Botta Filho
  • Piter Gargarella
  • Francisco Gil Coury
  • Guilherme Y. Koga


  • Diego Davi Coimbrão

Additive manufacturing (AM) materials and processes
Advanced processing of materials
Energy materials
Functional materials
Materials for structural applications
Nanostructured materials

Our group is a pioneer in Brazil in the study of metallic alloys with microstructures containing amorphous, metastable and nano-structured phases. These new alloys have surprising properties, arising both from the intrinsic characteristics of the structure and from the presence and combinations of phases resulting from the compositions and from the various processing routes that lead to the formation of microstructures in unbalanced conditions. The amorphous structure is characterized by excellent values ​​of mechanical properties, however, acceptable levels of ductility are only observed in alloys containing a small fraction of nanometric phases. In nano-structured alloys, the mechanical properties are determined by both the dimensions and the presence of metastable phases. Processing of conventional alloys under unconventional conditions (eg high solidification rates), can result in the suppression of the formation of phases detrimental to the performance of the material. In this context, our group has been working on the detailed evaluation and optimization of the mechanical properties of metal alloys containing amorphous, metastable and nano-structured phases. The metal alloys of interest are those of the following systems: the base of Cu, Cu-Zr, Fe, Ni, Ni-Nb and Ti. The nano-structured metal alloys of interest are the base of Al containing several types of nano-dispersions, including those of nano-quasicrystalline phases. The conventional alloys of our interest are also based on Al, mainly Al-Si of importance for recycling, where we evaluate the conditions of processes for judicious suppression of weakening phases. Our results, in addition to contributing to a careful evaluation of the possible applications of these metallic alloys, have also contributed to the development of research strategies in the search for new alloys and compositions of technological interest.