Morphology and orientation relationship of VC precipitates in HSLA steel

Shijian Yan, Xiaoping Liu, Wenhuai Tian

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    Shijian Yan, Xiaoping Liu, and Wenhuai Tian, Morphology and orientation relationship of VC precipitates in HSLA steel, J. Univ. Sci. Technol. Beijing , 13(2006), No. 5, pp.420-423. https://dx.doi.org/10.1016/S1005-8850(06)60085-6
    Shijian Yan, Xiaoping Liu, and Wenhuai Tian, Morphology and orientation relationship of VC precipitates in HSLA steel, J. Univ. Sci. Technol. Beijing , 13(2006), No. 5, pp.420-423. https://dx.doi.org/10.1016/S1005-8850(06)60085-6
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    Materials

    Morphology and orientation relationship of VC precipitates in HSLA steel

    • Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

    基金项目: 

    This work was financially supported by the National Natural Science Foundation of China (No.59971008).

      通信作者:

      Shijian Yan E-mail: shijianyan@sina.com.cn

    中文摘要

    The morphology and distribution of VC precipitates in HSLA steel as well as the orientation relationship between VC pre-cipitate and α-Fe were studied by transmission electron microscopy (TEM). The chemical composition of the VC precipitate was analyzed qualitatively by using analytical electron microscopy (AEM) equipped with an energy dispersive spectrum (EDS) system. The VC precipitate is needle-like in shape with a size of about 10 nm in length and is homogeneously dispersed in the α-Fe matrix. The smaller lattice misfit along the <100> lattice direction of α-Fe matrix leads to VC precipitate forming with its long axes nearly parallel to the <100> lattice direction of α-Fe matrix. It is confirmed that the orientation relationship between VC precipitate and α-Fe is the “N-W” orientation relation by selected area electron diffraction (SAED) patterns.

     

    Materials

    Morphology and orientation relationship of VC precipitates in HSLA steel

    Author Affilications

      • Department of Materials Physics and Chemistry,University of Science and Technology Beijing,Beijing 100083,China

    • Funds: 

      This work was financially supported by the National Natural Science Foundation of China (No.59971008).

    • Received: 01 June 2005;
    The morphology and distribution of VC precipitates in HSLA steel as well as the orientation relationship between VC pre-cipitate and α-Fe were studied by transmission electron microscopy (TEM). The chemical composition of the VC precipitate was analyzed qualitatively by using analytical electron microscopy (AEM) equipped with an energy dispersive spectrum (EDS) system. The VC precipitate is needle-like in shape with a size of about 10 nm in length and is homogeneously dispersed in the α-Fe matrix. The smaller lattice misfit along the <100> lattice direction of α-Fe matrix leads to VC precipitate forming with its long axes nearly parallel to the <100> lattice direction of α-Fe matrix. It is confirmed that the orientation relationship between VC precipitate and α-Fe is the “N-W” orientation relation by selected area electron diffraction (SAED) patterns.

     

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