Experimental Studies on the Crystallization of Amorphous Fe40Ni40P12B8 Alloy under Shock Loading

The shock-induced crystallization of amorphous Fe40Ni40P12B8 alloy was investigated in this paper. The shock loading condition was produced by the impact of high velocity projectile, which had been accelerated by a two-stage light-gas gun to a definite velocity. The experimental results indicated as follows: (1) the crystallization of amorphous Fe40Ni40P12B8 alloy can be induced under the shock loading in about 10-6 s duration; (2) the threshold pressure of crystallization is 30~50 GPa, and the correspondent temperature is 510~800 K; and (3) the precipitated phases depends on the pressure applied, at lower pressure the phases are -(Fe, Ni) solid solution and Fe3P type Fe3(P0.37B0.63) compound, at higher pressure (higher than 60 GPa) the phases are -(Fe, Ni) solid solution and two Fe3P type of Fe3(P0.37B0.63), (Fe, Ni)3P compounds.