Anisotropic ion-enhanced diffusion during ion nitriding of single crystalline austenitic stainless steel
Anisotropic ion-enhanced diffusion during ion nitriding of single crystalline austenitic stainless steel
复制标题
单晶奥氏体不锈钢离子渗氮过程中的各向异性离子增强扩散
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Y. Chumlyakov
中科院分区：
文献类型：
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作者：
A. Martinavičius;G. Abrasonis;W. Möller;C. Templier;J. Rivière;A. Déclemy;Y. Chumlyakov
研究了在三种不同晶向下离子束渗氮和退火过程中氮在AISI 316L单晶奥氏体不锈钢中的扩散。在400 °C和IkeV的离子能量下氮化后，N渗透深度显著地取决于晶体取向，其中（001）取向的渗透深度最高。实验观察定量再现拟合下的陷阱的影响下的扩散模型。在随后的等温退火过程中，N的扩散变得明显慢于氮化过程中和独立的取向。讨论了各向异性离子增强N扩散的可能机制。
Nitrogen diffusion is investigated in single crystalline austenitic stainless steel AISI 316L during ion beam nitriding and subsequent annealing at three different crystalline orientations. After nitriding at 400 °C and ion energy of 1 keV, the N penetration depth depends significantly on the crystalline orientation, with the highest penetration depth for (001) orientation. The experimental observations are quantitatively reproduced by fitting using the model of diffusion under the influence of traps. During subsequent isothermal annealing, the N diffusion becomes significantly slower than during nitriding and independent of the orientation. Possible mechanisms of the anisotropic ion-enhanced N diffusion are discussed.