Precipitation behavior and kinetics in Nb-V-bearing low-carbon steel

Xiaolin Li; Zhaodong Wang; Xiangtao Deng; Yanmei Li; Haonan Lou; Guodong Wang

doi:10.1016/j.matlet.2016.06.072

Precipitation behavior and kinetics in Nb-V-bearing low-carbon steel

Xiaolin Li, Zhaodong Wang, Xiangtao Deng, Yanmei Li, Haonan Lou, Guodong Wang

Northeastern University China

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

The chemical composition and lattice parameter of the nanometer-sized carbides in ferrite of Nb-V bearing low-carbon steel were studied by high resolution transmission electron microscopy and energy-dispersive X-ray spectroscopy. The results indicate that the average size of the carbides increased with increase in isothermal holding time. V was found to be gradually incorporated into NbC lattice to form a complex (Nb_xV_1-x)C particle during precipitation and the atomic ratio of V/Nb gradually increased during coarsening, which leads to a decrease in the lattice parameter of carbide and reduces the misfit strain between the carbide and ferrite matrix, resulting in acceleration of precipitation kinetics.

Original language	English
Pages (from-to)	6-9
Number of pages	4
Journal	Materials Letters
Volume	182
DOIs	https://doi.org/10.1016/j.matlet.2016.06.072
State	Published - 1 Nov 2016
Externally published	Yes

Keywords

Crystal structure
High resolution transmission electron microscopy
Microstructure
Nanoparticles

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10.1016/j.matlet.2016.06.072

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title = "Precipitation behavior and kinetics in Nb-V-bearing low-carbon steel",

abstract = "The chemical composition and lattice parameter of the nanometer-sized carbides in ferrite of Nb-V bearing low-carbon steel were studied by high resolution transmission electron microscopy and energy-dispersive X-ray spectroscopy. The results indicate that the average size of the carbides increased with increase in isothermal holding time. V was found to be gradually incorporated into NbC lattice to form a complex (NbxV1-x)C particle during precipitation and the atomic ratio of V/Nb gradually increased during coarsening, which leads to a decrease in the lattice parameter of carbide and reduces the misfit strain between the carbide and ferrite matrix, resulting in acceleration of precipitation kinetics.",

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author = "Xiaolin Li and Zhaodong Wang and Xiangtao Deng and Yanmei Li and Haonan Lou and Guodong Wang",

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doi = "10.1016/j.matlet.2016.06.072",

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T1 - Precipitation behavior and kinetics in Nb-V-bearing low-carbon steel

AU - Li, Xiaolin

AU - Wang, Zhaodong

AU - Deng, Xiangtao

AU - Li, Yanmei

AU - Lou, Haonan

AU - Wang, Guodong

PY - 2016/11/1

Y1 - 2016/11/1

N2 - The chemical composition and lattice parameter of the nanometer-sized carbides in ferrite of Nb-V bearing low-carbon steel were studied by high resolution transmission electron microscopy and energy-dispersive X-ray spectroscopy. The results indicate that the average size of the carbides increased with increase in isothermal holding time. V was found to be gradually incorporated into NbC lattice to form a complex (NbxV1-x)C particle during precipitation and the atomic ratio of V/Nb gradually increased during coarsening, which leads to a decrease in the lattice parameter of carbide and reduces the misfit strain between the carbide and ferrite matrix, resulting in acceleration of precipitation kinetics.

AB - The chemical composition and lattice parameter of the nanometer-sized carbides in ferrite of Nb-V bearing low-carbon steel were studied by high resolution transmission electron microscopy and energy-dispersive X-ray spectroscopy. The results indicate that the average size of the carbides increased with increase in isothermal holding time. V was found to be gradually incorporated into NbC lattice to form a complex (NbxV1-x)C particle during precipitation and the atomic ratio of V/Nb gradually increased during coarsening, which leads to a decrease in the lattice parameter of carbide and reduces the misfit strain between the carbide and ferrite matrix, resulting in acceleration of precipitation kinetics.

KW - Crystal structure

KW - High resolution transmission electron microscopy

KW - Microstructure

KW - Nanoparticles

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DO - 10.1016/j.matlet.2016.06.072

M3 - 文章

AN - SCOPUS:84977262876

SN - 0167-577X

VL - 182

SP - 6

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JO - Materials Letters

JF - Materials Letters

ER -

Precipitation behavior and kinetics in Nb-V-bearing low-carbon steel

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Keywords

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