Powder sintering and dilatometric studies of Fe-Ni invar alloys

Abstract

The paper addresses the study of thermal expansion of alloys fabricated by sintering of Fe and Ni powders. The phase composition and structure of the sintered alloys are found to correspond to invar alloys. The Fe-Ni alloys sintered using Ni and Fe powders exhibit the FCC structure with parameters similar to those of invar alloys. In case of low Ni concentration of 30-32 wt %, a BCC phase can be observed. The thermal expansion coefficient of the microstructure depends on Ni concentration: at 30-35 wt % Ni it decreases from 18 u 10^-6 up to 1.5 u 10^-6, and at higher Ni concentration it increases insignificantly. Measurement of the thermal expansion coefficient of the sintered Fe-35 wt % Ni alloys reveals two sections in the dependence of the change in the sample elongation against temperature. These sections are characterized by different CTE, and the inflection point of about 233°C corresponds to Curie temperature.

Original language	English
Title of host publication	Proceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology
Editors	Victor E. Panin, Vasily M. Fomin
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735440463
DOIs	https://doi.org/10.1063/5.0034243
Publication status	Published - 14 Dec 2020
Event	International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020 - Tomsk, Russian Federation Duration: 5 Oct 2020 → 9 Oct 2020

Publication series

Name	AIP Conference Proceedings
Volume	2310
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020
Country	Russian Federation
City	Tomsk
Period	5.10.20 → 9.10.20

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/5.0034243

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Chen, J., Abdulmenova, E. V., & Kulkov, S. N. (2020). Powder sintering and dilatometric studies of Fe-Ni invar alloys. In V. E. Panin, & V. M. Fomin (Eds.), Proceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology [020056] (AIP Conference Proceedings; Vol. 2310). American Institute of Physics Inc.. https://doi.org/10.1063/5.0034243

Powder sintering and dilatometric studies of Fe-Ni invar alloys. / Chen, J.; Abdulmenova, E. V.; Kulkov, S. N.

Proceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology. ed. / Victor E. Panin; Vasily M. Fomin. American Institute of Physics Inc., 2020. 020056 (AIP Conference Proceedings; Vol. 2310).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chen, J, Abdulmenova, EV & Kulkov, SN 2020, Powder sintering and dilatometric studies of Fe-Ni invar alloys. in VE Panin & VM Fomin (eds), Proceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology., 020056, AIP Conference Proceedings, vol. 2310, American Institute of Physics Inc., International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020, Tomsk, Russian Federation, 5.10.20. https://doi.org/10.1063/5.0034243

Chen J, Abdulmenova EV, Kulkov SN. Powder sintering and dilatometric studies of Fe-Ni invar alloys. In Panin VE, Fomin VM, editors, Proceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology. American Institute of Physics Inc. 2020. 020056. (AIP Conference Proceedings). https://doi.org/10.1063/5.0034243

Chen, J. ; Abdulmenova, E. V. ; Kulkov, S. N. / Powder sintering and dilatometric studies of Fe-Ni invar alloys. Proceedings of the International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology. editor / Victor E. Panin ; Vasily M. Fomin. American Institute of Physics Inc., 2020. (AIP Conference Proceedings).

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abstract = "The paper addresses the study of thermal expansion of alloys fabricated by sintering of Fe and Ni powders. The phase composition and structure of the sintered alloys are found to correspond to invar alloys. The Fe-Ni alloys sintered using Ni and Fe powders exhibit the FCC structure with parameters similar to those of invar alloys. In case of low Ni concentration of 30-32 wt %, a BCC phase can be observed. The thermal expansion coefficient of the microstructure depends on Ni concentration: at 30-35 wt % Ni it decreases from 18 u 10-6 up to 1.5 u 10-6, and at higher Ni concentration it increases insignificantly. Measurement of the thermal expansion coefficient of the sintered Fe-35 wt % Ni alloys reveals two sections in the dependence of the change in the sample elongation against temperature. These sections are characterized by different CTE, and the inflection point of about 233°C corresponds to Curie temperature.",

author = "J. Chen and Abdulmenova, {E. V.} and Kulkov, {S. N.}",

note = "Funding Information: This study was carried out according to the Project III.23.2.3 of Program Fundamental Scientific Research of the State Academies of Sciences for 2013–2020 in the part of sintering alloys and the reported study was funded by RFBR, project number grant No. 18-48-700039 in the part of measuring thermal expansion coefficient of alloys. Publisher Copyright: {\textcopyright} 2020 American Institute of Physics Inc.. All rights reserved. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; International Conference on Physical Mesomechanics. Materials with Multilevel Hierarchical Structure and Intelligent Manufacturing Technology 2020 ; Conference date: 05-10-2020 Through 09-10-2020",

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N2 - The paper addresses the study of thermal expansion of alloys fabricated by sintering of Fe and Ni powders. The phase composition and structure of the sintered alloys are found to correspond to invar alloys. The Fe-Ni alloys sintered using Ni and Fe powders exhibit the FCC structure with parameters similar to those of invar alloys. In case of low Ni concentration of 30-32 wt %, a BCC phase can be observed. The thermal expansion coefficient of the microstructure depends on Ni concentration: at 30-35 wt % Ni it decreases from 18 u 10-6 up to 1.5 u 10-6, and at higher Ni concentration it increases insignificantly. Measurement of the thermal expansion coefficient of the sintered Fe-35 wt % Ni alloys reveals two sections in the dependence of the change in the sample elongation against temperature. These sections are characterized by different CTE, and the inflection point of about 233°C corresponds to Curie temperature.

AB - The paper addresses the study of thermal expansion of alloys fabricated by sintering of Fe and Ni powders. The phase composition and structure of the sintered alloys are found to correspond to invar alloys. The Fe-Ni alloys sintered using Ni and Fe powders exhibit the FCC structure with parameters similar to those of invar alloys. In case of low Ni concentration of 30-32 wt %, a BCC phase can be observed. The thermal expansion coefficient of the microstructure depends on Ni concentration: at 30-35 wt % Ni it decreases from 18 u 10-6 up to 1.5 u 10-6, and at higher Ni concentration it increases insignificantly. Measurement of the thermal expansion coefficient of the sintered Fe-35 wt % Ni alloys reveals two sections in the dependence of the change in the sample elongation against temperature. These sections are characterized by different CTE, and the inflection point of about 233°C corresponds to Curie temperature.

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