Diffusional characteristics of atoms during the formation of titanium carbides

Lv Yanan; Chen Dong

doi:10.7513/j.issn.1004-7638.2021.03.022

Volume 42 Issue 3

Jun. 2021

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Lv Yanan, Chen Dong. Diffusional characteristics of atoms during the formation of titanium carbides[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 143-147. doi: 10.7513/j.issn.1004-7638.2021.03.022

Citation:

Lv Yanan, Chen Dong. Diffusional characteristics of atoms during the formation of titanium carbides[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 143-147. doi: 10.7513/j.issn.1004-7638.2021.03.022

Lv Yanan, Chen Dong. Diffusional characteristics of atoms during the formation of titanium carbides[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 143-147. doi: 10.7513/j.issn.1004-7638.2021.03.022

Citation:

Lv Yanan, Chen Dong. Diffusional characteristics of atoms during the formation of titanium carbides[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 143-147. doi: 10.7513/j.issn.1004-7638.2021.03.022

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Diffusional characteristics of atoms during the formation of titanium carbides

doi: 10.7513/j.issn.1004-7638.2021.03.022

Lv Yanan^1
,,
Chen Dong²

1.
Department of Mechanical and Electrical Engineering, Suzhou Institute of Industrial Technology, Suzhou 215104, Jiangsu,China
2.
School of Iron and Steel, Soochow University, Suzhou 215100, Jiangsu,China

Received Date: 2020-10-08
Publish Date: 2021-06-10

Abstract

Abstract

To clarify the formation mechanism of metal carbide precipitate in ferroalloy and solve the limitation that macro experiments cannot directly study the initial stage of carbide deposition, the diffusional characteristics of titanium and carbon atoms are studied during the formation process of nanoscale titanium carbide in ferrite via the molecular dynamics simulation. The dependences of system parameters, such as temperature and carbon concentration, on the diffusivity of titanium and carbon are investigated. The results show that the diffusion-controlled carbide formation relies on the diffusion of interstitial carbon atom and solute titanium atoms, in which the slowly diffusing substitutional component, titanium, is the dominating factor. The diffusivity of Ti and C are enhanced with the increasing temperature, but both diffusions of titanium and carbon decrease with the increasing carbon concentration.
- titanium carbide,
- formation,
- diffusivity,
- molecular dynamics

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References(17)

References

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