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用ＸＲＤ法研究了退火Ｆｅ７３．５Ｃｕ１Ｎｂ３Ｓｉ１３．５Ｂ９合金中α－Ｆｅ（Ｓｉ）晶化相的有序化过程．结果表明，Ｆｅ７３．５Ｃｕ１Ｎｂ３Ｓｉ１３．５Ｂ９非晶合金在４９０℃，１ｈ退火后，α－Ｆｅ（Ｓｉ）晶化相是具有ＤＯ３结构的有序相，有序畴为球形，直径为７．０ｎｍ，它随退火温度的升高而长大，在５９０℃退火后达１０．９ｎｍ，与α－Ｆｅ（Ｓｉ）的尺寸相当．此时，α－Ｆｅ（Ｓｉ）的有序度为０．８在８５０℃，１ｈ退火后，α－Ｆｅ（Ｓｉ）的ＤＯ３超点阵线条消失．在５５０℃等温退火时，α－Ｆｅ（Ｓｉ）的ＤＯ３有序畴先为椭球状，于６０ｍｉｎ退火后形成球状，直径为１０ｎｍ．
The ordering of α-Fe (Si) phase in annealed Fe73.5Cu1Nb3Si13.5B9 alloy was investigated by XRD. The results show that the α-Fe (Si) phase is an ordered phase with DO3 structure after annealing at 490 ℃ for 1h. The ordered domains are spherical and have a diameter of 7.0nm. It grows with the increase of annealing temperature and reaches 10.9nm after annealing at 590 ℃, which is equivalent to the size of α-Fe (Si). At this time, the ordered degree of α-Fe (Si) is 0.8, and the DO3 super-dotted line of α-Fe (Si) disappears after annealed at 850 ℃ for 1h. When isothermally annealed at 550 ℃, the DO3 ordered domains of α-Fe (Si) were first ellipsoidal and formed spherical shape with a diameter of 10nm after 60min annealing.