论文部分内容阅读
利用电子显微镜薄膜透射技术,选区电子衍射和X射线衍射对Ni-Fe-Mo合金和Ni-Fe-Jb合金的显微组织进行了比较;对Ni-Fe-Nb合金在不同热处理制度下组织结构对磁性能的影响进行了研究。其结果如下: 1.两类合金均存在调幅结构。Ni-Fe-Nb合金调幅区域大,而且衬度明显。随着调幅面积的增大,硬度增高,磁性能下降.解释了Ni-Fe-Nb合金硬化的原因。2.钼和铌原子的加入,降低了Ni_3Fe有序度,使合金得以保持适宜的有序度,获得高导磁性。在Ni-Fe-Nb合金中发现面心立方(有序)Ni_3Nb(γ′)的预沉淀相,与基体完全共格,促进了调幅结构的形成,使基体强化。
The microstructures of Ni-Fe-Mo alloy and Ni-Fe-Jb alloy were compared by electron diffraction and X-ray diffraction. The microstructures of Ni-Fe-Nb alloy under different heat treatment conditions The effect of magnetic properties was studied. The results are as follows: 1. Both types of alloys exist amplitude modulation structure. Ni-Fe-Nb alloy amplitude modulation area, and the contrast is obvious. As the AM area increases, the hardness increases and the magnetic properties decrease, which explains why the Ni-Fe-Nb alloy hardens. 2. The addition of molybdenum and niobium atoms, Ni 3 Fe reduced order, so that the alloy can maintain the appropriate degree of order, to obtain high permeability. The pre-precipitation phase of face-centered cubic (ordered) Ni 3 Nb (γ ’) was found in Ni-Fe-Nb alloy and completely conformed with the matrix, which promoted the formation of AM structure and strengthened the matrix.