标题:High resolution transmission electron microscopy studies of σ phase in Ni-based single crystal superalloys
作者:Sun, Fei ;Zhang, Jianxin ;Liu, Pan ;Feng, Qiang ;Han, Xiaodong ;Mao, Shengcheng
作者机构:[Sun, Fei ;Zhang, Jianxin ] Key Laboratory of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, Ch 更多
通讯作者:Zhang, J
来源:Journal of Alloys and Compounds
出版年:2012
卷:536
页码:80-84
DOI:10.1016/j.jallcom.2012.05.004
摘要:By means of high resolution transmission electron microscopy (HRTEM) and high-angle annular dark-field image technique (HAADF), morphological of plate-shaped σ phase and interfacial characteristics between plate-shaped σ phase and γ phase in Ni-based single crystal superalloys have been studied. On the basis of HRTEM observations, an atomic structural interface between σ phase and γ phase with a step has been proposed. σ Phase has the relationship of [0 0 1]γ//[1 1 2¯]σ, (2¯ 2 0)γ//(1¯ 1 0)σ,(2¯2¯ 0)γ//(1 1 1)σ; [0 1 1]γ//[1 1 0]σ, (1 1¯ 1)γ//(0 0 1¯)σwith the γ phase. The compositional characteristics of the σ phase which are rich in more heavy elements, such as W, Re, Cr and Ru, has also been clearly revealed by the HAADF imaging technique and Energy Dispersive X-Ray Spectroscopy (EDS) mapping analysis. © 2012 Elsevier B.V. All rights reserved.
收录类别:EI
资源类型:期刊论文
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