ERWIN, E.; PRATAMA, J.; SUGIYANTO, D.; CHAN, Y.; WIRADINATA, T. A.; FEBRIAN, M. A.; ARIZ, D. A. Identifying the hardness level of recycled aluminum with the addition of cu powder through a melting mechanism below the melting point and precipitation reinforcement. Eastern-European Journal of Enterprise Technologies, [S. l.], v. 3, n. 12 (141), p. 18–27, 2026. DOI: 10.15587/1729-4061.2026.359420. Disponível em: https://journals.uran.ua/eejet/article/view/359420. Acesso em: 6 jul. 2026.