The crystallization process of Mg–Ni–Fe alloys

• Published in: Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2009-09, Vol.521, p.172-174
• Main Authors: Cantelli, R., Palumbo, O., Paolone, A., Principi, G., Lo Russo, S.
• Format: Article
• Language: English
• Subjects: Anelastic properties; Anelasticity, internal friction, stress relaxation, and mechanical resonances; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Growth from solid phases (including multiphase diffusion and recrystallization); Materials science; Mechanical and acoustical properties of condensed matter; Methods of crystal growth; physics of crystal growth; Physics; Thermal analysis
• ISSN: 0921-5093; 1873-4936
• DOI: 10.1016/j.msea.2008.09.105

The heating-induced crystallization process of Mg–Ni–Fe amorphous alloys was studied by anelastic spectroscopy and differential scanning calorimetry in the temperature range 100–500 K. The crystallization is obtained through several progressive non-reversible steps, detected by changes in the Young's modulus and concomitant irreversible peaks in the elastic energy loss curve. A systematic study of the anelastic spectrum measured on samples at different crystallization steps was carried out. Moreover, a non-thermally activated anelastic peak was observed at 215 K which is attributed to a dynamical process connected to the simultaneous presence of different phases.