Cellular precipitation in a nitrogen alloyed stainless steel
Cellular precipitation in a nitrogen alloyed stainless steel
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氮合金不锈钢中的细胞沉淀
DOI：
10.1179/mst.1989.5.4.328
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
A. Hendry
中科院分区：
文献类型：
--
作者：
D. Rayaprolu;A. Hendry
本文研究了Nitronic系列高氮奥氏体不锈钢中的析出相。在临界氮浓度以上，观察到胞状沉淀以及作为一般沉淀物的Cr 2N的形成和Z相（Cr2 Nb 2N 2）的晶内沉淀。细胞沉淀的性质进行了研究，使用恒定的活动在氮气中老化，并已使用X-射线衍射和电子显微镜检查的过程中的特性。胞状沉淀过程被证明是一致的基于氮的长程扩散和气相和钢基体之间的平衡的模型。氮在与气相或Cr2 N沉淀物平衡的奥氏体中的溶解度与已发表的数据一致。MST/917
Precipitation in a high nitrogen austenitic stainless steel of the Nitronic series has been studied. Above a critical nitrogen concentration, cellular precipitation is observed together with formation of Cr2N as a general precipitate and intragranular precipitation of Z phase (Cr2Nb2N2). The nature of cellular precipitation has been studied using constant activity aging in nitrogen and the characteristics of the process have been examined using X-ray diffraction and electron microscopy. The cellular precipitation process is shown to be consistent with a model based on long range diffusion of nitrogen and equilibrium between the gas phase and steel matrix. The solubility of nitrogen in austenite in equilibrium with the gas phase or with Cr2N precipitates is consistent with published data. MST/917