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本文比较了淬火无序态(Co_(78)Fe_(22))_3V在经过冷加工然后退火和未经过冷加工直接退火两种情况下的显微组织,对于无序-有序转变过程中形成稳定层错的机制提出了与前人不同的看法,认为是位移矢量为1/6〈112〉的层错与位移矢量为1/2〈110〉的反相畴界反应生成位移矢量为1/3〈112〉的超点阵内禀层错(SISF)的结果。在冷加工引入大量位错的情况下,位错分解为层错,并与反相畴界反应,生成密集的SISF层错四面体胞群,在720℃48h退火后仍保持几十纳米的细小尺寸。
In this paper, the microstructures of the quenched disordered (Co_ (78) Fe_ (22)) _3V alloy after cold working and then annealing and direct annealing without cold working are compared. For the formation of the stable layer The wrong mechanism proposed a different opinion from the previous one. It is considered that the displacement vector is 1/6 <112> and the displacement vector is 1/3 < 112> Super Skeletal Intrinsic Fault (SISF) results. In the case of a large number of dislocations introduced during cold working, the dislocations are decomposed into layer faults and react with inverting domain boundaries to form dense SISF stacking fault tetrahedral populations. After annealing at 720 ° C for 48 hours, the dislocations still maintain the small size of tens of nanometers .