Influence of dysprosium and terbium on structural-mechanical properties of amorphous alloys Fe–Nb–B–REM

Chem. Met. Alloys 7 (2014) 181-186

https://doi.org/10.30970/cma7.0291

O. HERTSYK, L. BOICHYSHYN, M. KOVBUZ, T. PEREVERZEVA, B. KOTUR, V. NOSENKO

Amorphous alloys Fe–Nb–(REM = Tb or Dy) near the composition Fe₈₄Nb₂B₁₄ were obtained by the melt spinning method and studied in the temperature range of nanocrystallization. It was found that alloying of the basic alloy with Tb or Dy increases the temperature of the first stage of crystallization by approximately 90 K. Alloying with Tb or Dy also enhanced the microhardness. Both these results support possible application of alloyed Fe-Nb-B-(Tb/Dy) in technical devices operating at high temperature.

Дифрактограми вихідних зразків АМС: 1 – Fe₈₄Nb₂B₁₄, 2 – Fe₈₂Nb₂B₁₄Tb₂, 3 – Fe₈₂Nb₂B₁₄Dy₂

Keywords

Amorphous alloys based on Fe / Rare-earth metals / Nanocrystallization / Microhardness