本文研究了０．２％碳钢经奥氏体氮碳共渗后在淬火和时效态下的化合物层。通过电子衍射花样与其模拟花样中超点阵斑点强度的比较，确定了淬火态化合物层为三种结构类型ε相中的ε－Ｆｅ（２－３）（Ｎ，Ｃ）；时效态化合物层灰区中析出薄片状γ＇－Ｆｅ４Ｎ相，它们之间常存在着１８０°旋转对称关系，本文提出了解释这一关系的模型。
The structures of the quenched and aged compound layers of 0.2% C steel formed by austenitic nitrocarburizing treatment have been investigated. By comparing the intensities of superlattice spots in electron diffration patterns with that of the simulated patterns, the quenched compound layer is confirmed to be ε-Fe(2-3)N which is one of three structural types of ε phase. The γ＇- Fe4N plates precipitated from the grey regions of aged compound layer are sometimes observed to be 180°related to each other. A model has been suggested to explain this 180°rotation relationship.
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| [8] | BellT,KinaliM,MunstermannG．HeatTreatMet,1987 |
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