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The formation of nanocrystalline Fe_(73.5) Cu_1Nb_3Si_(13.5) B_9 alloy by annealing an amorphous Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9 alloy at a temperature of 823 K under pressures in the range of 1—5 GPa is investigated by using X-ray diffraction, electron diffraction, and transmission electron microscopy. The high pressure experiments are carried out in belt-type pressure apparatus. Experimental results show that the initial crystalline phase in these annealed alloys is α-Fe solid solution (named α-Fe phase below), and high pressure has a great influence on the crystallization process of the α-Fe phase. The grain size of the α-Fe phase decreases with the increase of pressure (P). The volume fraction of the α-Fe phase increases with increasing the pressure as the pressure is below 2 GPa, and then decreases (P>2 GPa). The mechanism for the effects of the high pressure on the crystallization process of amorphous Fe_(73.5) Cu_1Nb_3Si_(13.5)B_9 alloy is discussed.
The formation of nanocrystalline Fe_ (73.5) Cu_1Nb_3Si_ (13.5) B_9 alloy by annealing an amorphous Fe_ (73.5) Cu_1Nb_3Si_ (13.5) B_9 alloy at a temperature of 823 K under pressures in the range of 1-5 GPa is investigated by using X- ray diffraction, electron diffraction, and transmission electron microscopy. The high pressure experiments are carried out in belt-type pressure apparatus. Experimental results show that the initial crystalline phase in these annealed alloys is α-Fe solid solution (named α-Fe phase below ), and high pressure has a great influence on the crystallization process of the α-Fe phase. The grain size of the α-Fe phase decreases with the increase of pressure (P). The volume fraction of the α-Fe phase increases with The mechanism for the effects of the high pressure on the crystallization process of amorphous Fe_ (73.5) Cu_1Nb_3Si_ (13.5) B_9 alloy is discussed.