Nanocrystallization of Al₈₀Ni₆Y₈Co₄Cu₂ amorphous alloy

来源期刊：中国有色金属学报(英文版)2001年第2期

论文作者：边赞 孙玉峰 何国 陈国良

文章页码：254 - 257

Key words：nanoscale α(Al) particle; alloy strengthening; dispersion strengthening; microhardness

Abstract: Nanoscale α(Al) phase with a size of 15 nm was precipitated from Al₈₀Ni₆Y₈Co₄Cu₂ amorphous ribbons after annealing. The microhardness increases with increasing the crystallization volume fraction of nanoscale α（Al）phase. The combination effect of alloy strengthening and dispersion strengthening is main reason for the increase of microhardness. The formation of intermetallic compound (Al₃Ni) with a small volume fraction leads to the decrease of microhardness resulting from the depletion of the solute elements in the residual amorphous matrix and the weakening of alloy strengthening. With increasing the volume fraction of intermetallic compound, microhardness increases again due to dispersion strengthening of nanoscale intermetallic compound.