Thermodynamic assessment of the Fe-Nb-Si system

Jiang Y.; Li F.; Li S.-R.; Xu K.; Chen L.-L.; Deng X.-Z.; Huang Y.-Y.; Chang K.

doi:10.2298/JMMB191220029J

Journal of Mining and Metallurgy. Section B: Metallurgy (Jan 2021)

Thermodynamic assessment of the Fe-Nb-Si system

Jiang Y.,
Li F.,
Li S.-R.,
Xu K.,
Chen L.-L.,
Deng X.-Z.,
Huang Y.-Y.,
Chang K.

Affiliations

Jiang Y.: Shanghai Key Laboratory for High Temperature Materials and Precision Forming, Shanghai Jiao Tong University, Shanghai, China + Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, China
Li F.: Shanghai Key Laboratory for High Temperature Materials and Precision Forming, Shanghai Jiao Tong University, Shanghai, China
Li S.-R.: State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co. Ltd., Shizuishan, China
Xu K.: Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, China
Chen L.-L.: Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, China
Deng X.-Z.: Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, China
Huang Y.-Y.: Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, China
Chang K.: Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, China

DOI: https://doi.org/10.2298/JMMB191220029J
Journal volume & issue: Vol. 57, no. 3
pp. 331 – 340

Abstract

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Nb–Si based alloys have drawn continuously increasing attention due to their excellent high-temperature mechanical properties. The addition of element Fe could improve their poor high-temperature oxidation resistance which largely restricts their application. With the aim to study the effect of Fe addition on the Nb–Si system and to design appropriate alloy composition, the Fe–Nb–Si ternary system was thermodynamically investigated using the CALPHAD (CALculation of PHAse Diagrams) approach aided with the formation enthalpies for ternary compounds at 0 K computed via ab initio calculations. A self-consistent thermodynamic description of the Fe–Nb–Si system was obtained in this work. Key isothermal sections and liquidus projection were presented, and the calculation results showed a good agreement with available experimental data.

Published in Journal of Mining and Metallurgy. Section B: Metallurgy

ISSN: 1450-5339 (Print); 2217-7175 (Online)
Publisher: Technical Faculty, Bor
Country of publisher: Serbia
LCC subjects: Technology: Mining engineering. Metallurgy
Website: http://www.doiserbia.nb.rs/journal.aspx?issn=1450-5339

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