Effect of electropulsing on the precipitation of NbC x  N1−x from austenite phase

Zhenghai Zhu; Hongbiao Dong; Li Zhou; Ke Zhang; Haijun Wang; Lizhong Chang; Fei He; Tao Jia

doi:10.1080/02670836.2020.1804696

Effect of electropulsing on the precipitation of NbC _x N_1−x from austenite phase

Zhenghai Zhu
, Hongbiao Dong
, Li Zhou
, Ke Zhang^*
, Haijun Wang
, Lizhong Chang
, Fei He
, Tao Jia

^*Corresponding author for this work

Metallurgy and Materials

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

Abstract

The precipitation of NbC _x N_1−x significantly affects the high-temperature mechanical properties of Nb microalloyed steel. The control of the precipitation behaviour of NbC _x N_1−x is the key, especially the nucleation and precipitation from Nb solid solution. We explore to use electropulsing to promote the precipitation of NbC _x N_1−x through thermodynamic model, chemical phase analysis, XRD and TEM. The modelling research show that electropulsing intensity significantly promotes the nucleation of NbC _x N_1−x in austenite phase. The higher the electropulsing temperature is, the better the promotion effect is. The chemical phase analysis and XRD investigation results show that electropulsing can increase the amount of precipitation of NbC _x N_1−x by 50% at 950°C compared to the precipitation without electropulsing.

Original language	English
Pages (from-to)	1566-1573
Number of pages	8
Journal	Materials Science and Technology (United Kingdom)
Volume	36
Issue number	14
DOIs	https://doi.org/10.1080/02670836.2020.1804696
Publication status	Published - 21 Sept 2020

Bibliographical note

Publisher Copyright:
© 2020 Institute of Materials, Minerals and Mining.

Keywords

Electropulsing
microalloyed steel
NbC N
nucleation
precipitation

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1080/02670836.2020.1804696

Cite this

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title = "Effect of electropulsing on the precipitation of NbC x N1−x from austenite phase",

abstract = "The precipitation of NbC x N1−x significantly affects the high-temperature mechanical properties of Nb microalloyed steel. The control of the precipitation behaviour of NbC x N1−x is the key, especially the nucleation and precipitation from Nb solid solution. We explore to use electropulsing to promote the precipitation of NbC x N1−x through thermodynamic model, chemical phase analysis, XRD and TEM. The modelling research show that electropulsing intensity significantly promotes the nucleation of NbC x N1−x in austenite phase. The higher the electropulsing temperature is, the better the promotion effect is. The chemical phase analysis and XRD investigation results show that electropulsing can increase the amount of precipitation of NbC x N1−x by 50\% at 950°C compared to the precipitation without electropulsing.",

keywords = "Electropulsing, microalloyed steel, NbC N, nucleation, precipitation",

author = "Zhenghai Zhu and Hongbiao Dong and Li Zhou and Ke Zhang and Haijun Wang and Lizhong Chang and Fei He and Tao Jia",

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T1 - Effect of electropulsing on the precipitation of NbC x N1−x from austenite phase

AU - Zhu, Zhenghai

AU - Dong, Hongbiao

AU - Zhou, Li

AU - Zhang, Ke

AU - Wang, Haijun

AU - Chang, Lizhong

AU - He, Fei

AU - Jia, Tao

PY - 2020/9/21

Y1 - 2020/9/21

N2 - The precipitation of NbC x N1−x significantly affects the high-temperature mechanical properties of Nb microalloyed steel. The control of the precipitation behaviour of NbC x N1−x is the key, especially the nucleation and precipitation from Nb solid solution. We explore to use electropulsing to promote the precipitation of NbC x N1−x through thermodynamic model, chemical phase analysis, XRD and TEM. The modelling research show that electropulsing intensity significantly promotes the nucleation of NbC x N1−x in austenite phase. The higher the electropulsing temperature is, the better the promotion effect is. The chemical phase analysis and XRD investigation results show that electropulsing can increase the amount of precipitation of NbC x N1−x by 50% at 950°C compared to the precipitation without electropulsing.

AB - The precipitation of NbC x N1−x significantly affects the high-temperature mechanical properties of Nb microalloyed steel. The control of the precipitation behaviour of NbC x N1−x is the key, especially the nucleation and precipitation from Nb solid solution. We explore to use electropulsing to promote the precipitation of NbC x N1−x through thermodynamic model, chemical phase analysis, XRD and TEM. The modelling research show that electropulsing intensity significantly promotes the nucleation of NbC x N1−x in austenite phase. The higher the electropulsing temperature is, the better the promotion effect is. The chemical phase analysis and XRD investigation results show that electropulsing can increase the amount of precipitation of NbC x N1−x by 50% at 950°C compared to the precipitation without electropulsing.

KW - Electropulsing

KW - microalloyed steel

KW - NbC N

KW - nucleation

KW - precipitation

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DO - 10.1080/02670836.2020.1804696

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JO - Materials Science and Technology (United Kingdom)

JF - Materials Science and Technology (United Kingdom)

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Effect of electropulsing on the precipitation of NbC x N1−x from austenite phase