用原子探针场离子显微镜（AP-FIM）研究了添加B对Ni3Al有序度的影响以及不同Ni／Al比时Ni3Al场离子像衬度的变化无B的Ni3Al样品中晶内出现富Ni区，且随着Ni富集程度的不同而影响场离子像的衬度在.Ni3Al样品中，B的添加会影响Ni3Al晶体的择优取向随B含量的增加，Ni3Al中占据反位置的Al原子增多，有序度降低Ni3Al样品有序度的降低是改善室温延展性的原因之一.
By using AP-FIM the effects of addition of B on the order degree and field ion image contrast of Ni3Al have been investigated. There are many Ni-rich regions in Ni3Al without B. The addition of B can result in the preferential orientation of Ni3Al. As content of B increases, the number of anti-site Al atom increases and the order degree of Ni3Al decreases.The latter is also one of the reasons of the ductility improvement in Ni3Al at room temperature.
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