Grain-boundary structure and segregation behavior in a nickel-base stainless alloy
Grain-boundary structure and segregation behavior in a nickel-base stainless alloy
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DOI：
10.1016/j.scriptamat.2012.02.014
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发表时间：
2012-05
影响因子：
6
通讯作者：
S. Baik;M. Olszta;S. Bruemmer;D. Seidman
中科院分区：
文献类型：
--
作者：
S. Baik;M. Olszta;S. Bruemmer;D. Seidman
利用原子探针层析成像（APT）获得具有原子空间分辨率的Ni-Cr-Fe合金600中关于晶界（GB）偏析的三维化学信息。详细的晶体学的GB确定使用的方法，结合电子背散射衍射和聚焦离子束显微镜，以建立GB的五个宏观自由度，然后由APT GB组成分析。GB的微观结构和微观化学的表征进行，以提高我们的理解控制晶间腐蚀和应力腐蚀开裂的机制。
Atom-probe tomography (APT) is utilized to obtain three-dimensional chemical information concerning grain boundary (GB) segregation in a Ni–Cr–Fe alloy 600 with atomic spatial resolution. Detailed crystallography of GBs is determined using an approach that combines electron backscatter diffraction and focused ion-beam microscopy to establish a GB’s five macroscopic degrees of freedom, followed by an APT GB composition analysis. Characterizations of GB microstructure and microchemistry are performed to improve our understanding of mechanisms controlling intergranular attack and stress-corrosion cracking.