Crystallization behavior and corrosion resistance of Al86Ni10Zr4 amorphous alloy under different annealing treatment conditions

Influence of annealing conditions on changes of the structure and selected properties of Al88Y7Fe5 and Al88Y6Fe6 alloys

“…The lowest corrosion rate (vcorr = 0.0003 mm/year) was calculated for the Al88Y7Fe5 alloy after annealing at 250 °C, and the greatest weight loss was found for the Al88Y6Fe6 alloy as-spun state (vcorr = 0.021 mm/year). The variable effect of the annealing process on the change in corrosion resistance of Al-based amorphous alloys is confirmed by research carried out in [1,3,6,21,22]. In the work [6] showed that after annealing at 523 K of the amorphous Al86Ni10Zr4 melt spun alloy, the corrosion resistance of the ribbons improved.…”

“…The variable effect of the annealing process on the change in corrosion resistance of Al-based amorphous alloys is confirmed by research carried out in [1,3,6,21,22]. In the work [6] showed that after annealing at 523 K of the amorphous Al86Ni10Zr4 melt spun alloy, the corrosion resistance of the ribbons improved. In turn, polarization tests of the Al84Ni9Y7 alloy revealed the negative effect of heat treatment at 373 to 673 K on the corrosion resistance of these materials, because the samples tested after annealing exhibited a lower potential than the sample in the spun state [22].…”

“…In turn, the electrochemical properties are better for the Al88Y6Fe6 alloy after annealing at 300 °C. Therefore, it could be concluded that high corrosion resistance can also be obtained after structural relaxation annealing or partial crystallization annealing [6]. Tailleart et al [21] observed the best corrosion resistance of an amorphous Al-Co-Ce alloy after relaxation.…”

“…Heat treatment of amorphous alloys may consist of annealing leading to relaxation of the amorphous structure and annealing resulting in full crystallization of metallic glasses, which in this case is disadvantageous due to the degradation of the properties of such materials, including, for example, loss of high corrosion resistance, as well as a significant increase in brittleness, preventing their practical use. Much more advantageous for metallic glasses is annealing, as a result of which the amorphous structure relaxes, as this phenomenon usually leads to preservation and sometimes even improvement of the desired physical and mechanical properties of metallic alloys [6][7][8]. The reasons for the properties of improvement of amorphous alloys after heat treatment are constantly discussed; therefore, more research is needed in this area [1,4,9].…”

The in-situ re-melting post-treatment on properties of atmosphere plasma-sprayed FeCoCrMoCBY amorphous alloy coating

“…The FeCo 20 Cr 15 Mo 10 C 3 B 1 Y 2 has an excellent amorphous forming and retaining ability, thus the amorphous content does not decrease significantly because it experiences melting. The high content of amorphous phase is guaranteed for high corrosion resistance (Zhang et al , 2022; Kang et al , 2020).…”