Oxidation behaviour of Nb-rich Ni-Cr-Fe alloys: Role and effect of carbides precipitates

Y. X. Xu; J. T. Lu; W. Y. Li; X. W. Yang

doi:10.1016/j.corsci.2018.05.040

Oxidation behaviour of Nb-rich Ni-Cr-Fe alloys: Role and effect of carbides precipitates

Y. X. Xu
, J. T. Lu
, W. Y. Li
, X. W. Yang

材料学院

Northwestern Polytechnical University Xian
Thermal Power Research Institute

科研成果: 期刊稿件 › 文章 › 同行评审

48 引用（Scopus）

摘要

Present work aims to find the influence of carbide precipitates on the oxidation behaviour of Nb-rich Ni-Cr-Fe alloys at 1000 °C in air. Three Ni-Cr-Fe alloys, NC-15Fe-1Nb, NC-15Fe-1Nb-0.8C, NC-15Fe-1Nb-0.8C-0.5Ti were designed by alloying with Ti, Nb and C. Results show that the formation of NbC is crucial for the preferential oxidation of Cr. Moreover, either preventing NbC formation or favouring (Ti,Nb)C formation is found detrimental on such a beneficial effect, where the latter has a more intense influence. Roles of the precipitates in oxidation mechanism give new insights into the alloy optimization.

源语言	英语
页（从-至）	252-259
页数	8
期刊	Corrosion Science
卷	140
DOI	https://doi.org/10.1016/j.corsci.2018.05.040
出版状态	已出版 - 1 8月 2018

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10.1016/j.corsci.2018.05.040

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title = "Oxidation behaviour of Nb-rich Ni-Cr-Fe alloys: Role and effect of carbides precipitates",

abstract = "Present work aims to find the influence of carbide precipitates on the oxidation behaviour of Nb-rich Ni-Cr-Fe alloys at 1000 °C in air. Three Ni-Cr-Fe alloys, NC-15Fe-1Nb, NC-15Fe-1Nb-0.8C, NC-15Fe-1Nb-0.8C-0.5Ti were designed by alloying with Ti, Nb and C. Results show that the formation of NbC is crucial for the preferential oxidation of Cr. Moreover, either preventing NbC formation or favouring (Ti,Nb)C formation is found detrimental on such a beneficial effect, where the latter has a more intense influence. Roles of the precipitates in oxidation mechanism give new insights into the alloy optimization.",

keywords = "A. Superalloys, B. EPMA, B. SEM, B. XRD, C. High-temperature corrosion, C. Oxidation",

author = "Xu, \{Y. X.\} and Lu, \{J. T.\} and Li, \{W. Y.\} and Yang, \{X. W.\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = aug,

day = "1",

doi = "10.1016/j.corsci.2018.05.040",

language = "英语",

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journal = "Corrosion Science",

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}

TY - JOUR

T1 - Oxidation behaviour of Nb-rich Ni-Cr-Fe alloys

T2 - Role and effect of carbides precipitates

AU - Xu, Y. X.

AU - Lu, J. T.

AU - Li, W. Y.

AU - Yang, X. W.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - Present work aims to find the influence of carbide precipitates on the oxidation behaviour of Nb-rich Ni-Cr-Fe alloys at 1000 °C in air. Three Ni-Cr-Fe alloys, NC-15Fe-1Nb, NC-15Fe-1Nb-0.8C, NC-15Fe-1Nb-0.8C-0.5Ti were designed by alloying with Ti, Nb and C. Results show that the formation of NbC is crucial for the preferential oxidation of Cr. Moreover, either preventing NbC formation or favouring (Ti,Nb)C formation is found detrimental on such a beneficial effect, where the latter has a more intense influence. Roles of the precipitates in oxidation mechanism give new insights into the alloy optimization.

AB - Present work aims to find the influence of carbide precipitates on the oxidation behaviour of Nb-rich Ni-Cr-Fe alloys at 1000 °C in air. Three Ni-Cr-Fe alloys, NC-15Fe-1Nb, NC-15Fe-1Nb-0.8C, NC-15Fe-1Nb-0.8C-0.5Ti were designed by alloying with Ti, Nb and C. Results show that the formation of NbC is crucial for the preferential oxidation of Cr. Moreover, either preventing NbC formation or favouring (Ti,Nb)C formation is found detrimental on such a beneficial effect, where the latter has a more intense influence. Roles of the precipitates in oxidation mechanism give new insights into the alloy optimization.

KW - A. Superalloys

KW - B. EPMA

KW - B. SEM

KW - B. XRD

KW - C. High-temperature corrosion

KW - C. Oxidation

UR - https://www.scopus.com/pages/publications/85047876197

U2 - 10.1016/j.corsci.2018.05.040

DO - 10.1016/j.corsci.2018.05.040

M3 - 文章

AN - SCOPUS:85047876197

SN - 0010-938X

VL - 140

SP - 252

EP - 259

JO - Corrosion Science

JF - Corrosion Science

ER -

Oxidation behaviour of Nb-rich Ni-Cr-Fe alloys: Role and effect of carbides precipitates

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