The formation mechanism of complex carbides in Nb-V microalloyed steel

Xiaolin Li; Haozhe Li; Linxi Liu; Xiangtao Deng; Zhaodong Wang

doi:10.1016/j.matlet.2021.131544

The formation mechanism of complex carbides in Nb-V microalloyed steel

Xiaolin Li, Haozhe Li, Linxi Liu, Xiangtao Deng, Zhaodong Wang

材料学院

科研成果: 期刊稿件 › 文章 › 同行评审

10 引用（Scopus）

摘要

The formation mechanism of complex precipitates in Nb-V microalloyed steel has been systematically studied by high resolution transmission electron microscopy (HRTEM) and atom probe tomography (APT). The results reveal that there are two precipitation mechanism: replacement and heterogeneous mode. The core–shell precipitate has been observed with double direction Moiré fringe, which is formed by the heterogeneous mechanism, while for the precipitates with uniform distributed V and Nb atoms, is formed by the replacement mechanism. These two modes both reduce the lattice misfit and promote precipitation. In addition, the APT result reveals that the ratio of V to Nb increases with the increase of particle size, which matches well with the previous TEM results.

源语言	英语
文章编号	131544
期刊	Materials Letters
卷	311
DOI	https://doi.org/10.1016/j.matlet.2021.131544
出版状态	已出版 - 15 3月 2022

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title = "The formation mechanism of complex carbides in Nb-V microalloyed steel",

abstract = "The formation mechanism of complex precipitates in Nb-V microalloyed steel has been systematically studied by high resolution transmission electron microscopy (HRTEM) and atom probe tomography (APT). The results reveal that there are two precipitation mechanism: replacement and heterogeneous mode. The core–shell precipitate has been observed with double direction Moir{\'e} fringe, which is formed by the heterogeneous mechanism, while for the precipitates with uniform distributed V and Nb atoms, is formed by the replacement mechanism. These two modes both reduce the lattice misfit and promote precipitation. In addition, the APT result reveals that the ratio of V to Nb increases with the increase of particle size, which matches well with the previous TEM results.",

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author = "Xiaolin Li and Haozhe Li and Linxi Liu and Xiangtao Deng and Zhaodong Wang",

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T1 - The formation mechanism of complex carbides in Nb-V microalloyed steel

AU - Li, Xiaolin

AU - Li, Haozhe

AU - Liu, Linxi

AU - Deng, Xiangtao

AU - Wang, Zhaodong

PY - 2022/3/15

Y1 - 2022/3/15

N2 - The formation mechanism of complex precipitates in Nb-V microalloyed steel has been systematically studied by high resolution transmission electron microscopy (HRTEM) and atom probe tomography (APT). The results reveal that there are two precipitation mechanism: replacement and heterogeneous mode. The core–shell precipitate has been observed with double direction Moiré fringe, which is formed by the heterogeneous mechanism, while for the precipitates with uniform distributed V and Nb atoms, is formed by the replacement mechanism. These two modes both reduce the lattice misfit and promote precipitation. In addition, the APT result reveals that the ratio of V to Nb increases with the increase of particle size, which matches well with the previous TEM results.

AB - The formation mechanism of complex precipitates in Nb-V microalloyed steel has been systematically studied by high resolution transmission electron microscopy (HRTEM) and atom probe tomography (APT). The results reveal that there are two precipitation mechanism: replacement and heterogeneous mode. The core–shell precipitate has been observed with double direction Moiré fringe, which is formed by the heterogeneous mechanism, while for the precipitates with uniform distributed V and Nb atoms, is formed by the replacement mechanism. These two modes both reduce the lattice misfit and promote precipitation. In addition, the APT result reveals that the ratio of V to Nb increases with the increase of particle size, which matches well with the previous TEM results.

KW - Atom probe

KW - Crystal structure

KW - Microstructure

KW - Nanoparticles

KW - Precipitation mechanism

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DO - 10.1016/j.matlet.2021.131544

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SN - 0167-577X

VL - 311

JO - Materials Letters

JF - Materials Letters

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The formation mechanism of complex carbides in Nb-V microalloyed steel

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