Recognising the various types of absorbed nitrogen in nitrided iron-based alloys and the lack of accuracy in local composition analysis of the individual nano-sized nitride precipitates (e.g. by atom probe tomography), precise determination of the nitride composition requires so-called denitriding treatments. This study proposes two routes to determine the nanonitride stoichiometry, which are demonstrated by experimental analysis of the denitriding behaviour in hydrogen gas of nitrided, model Fe–V alloys. The minimal nitrogen activity to stabilise the alloying element nitrides MeN in Fe–Me–N alloys is calculated. A strategy is offered to stabilise the alloying element nitrides and to determine the nitrogen content strongly bonded in the nitrides.

中文翻译：

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铁基合金中合金元素氮化物的稳定性；氮化铁钒合金的脱氮

认识到氮化铁基合金中吸收的氮的各种类型以及单个纳米级氮化物析出物的局部成分分析缺乏准确性（例如通过原子探针断层扫描），氮化物成分的精确测定需要所谓的脱氮处理. 本研究提出了两种方法来确定纳米氮化物的化学计量，这通过对氮化模型 Fe-V 合金在氢气中的脱氮行为的实验分析来证明。计算了在 Fe-Me-N 合金中稳定合金元素氮化物 MeN 的最小氮活性。提供了一种策略来稳定合金元素氮化物并确定氮化物中牢固结合的氮含量。