Study of the martensitic transformation in the Co–9 at % Al alloy / Kazantseva N.V., Stepanova N.N., Vinogradova N.I., Demakov S.L., Yurovskikh A.S., Davydov D.I., Shishkin D.A., Rigmant M.B., Romanov E.P. // Physics of Metals and Metallography. - 2016. - V. 117, l. 1. - P. 42-48.

ISSN:

0031918X

Type:

Article

Abstract:

Phase transformations in the Co–9 at % Al have been investigated after slow furnace cooling. It has been shown that the structure and phase composition of the alloy after slow cooling do not correspond to the equilibrium phase diagram of the alloy of this chemical composition. It has been established that the α → ε martensitic transformation does not require overcooling and occurs even during a slow cooling of the alloy. It has been found that the formation of 4H modulated martensite is a specific feature of the binary alloys of cobalt and is not connected with the rate of their cooling. The Curie temperatures for the B2, α, and ε phases have been determined. © 2016, Pleiades Publishing, Ltd.

Author keywords:

Co–Al; equilibrium phases; magnetic properties; martensite; phase diagram

Index keywords:

Aluminum; Binary alloys; Cooling; Magnetic properties; Martensite; Phase diagrams; Al-alloy; Chemical compositions; Equilibrium phase diagrams; Equilibrium phasis; Furnace cooling; Slow cooling; Marte

DOI:

10.1134/S0031918X16010075

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958078227&doi=10.1134%2fS0031918X16010075&partnerID=40&md5=0306793fff9a5fc76a397e84757d2596

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Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958078227&doi=10.1134%2fS0031918X16010075&partnerID=40&md5=0306793fff9a5fc76a397e84757d2596
Affiliations	Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Ekaterinburg, Russian Federation; Yeltsin Ural Federal University (UrFU), ul. Mira 19, Ekaterinburg, Russian Federation
Author Keywords	Co–Al; equilibrium phases; magnetic properties; martensite; phase diagram
Funding Details	14-08-00108, RFBR, Russian Foundation for Basic Research
References	Vasil’ev, A.N., Buchel’nikov, V.D., Takagi, T., Khovailo, V.V., Estrin, E.I., Shape memory ferromagnets (2003) Phys.-Usp., 46, pp. 559-588; Omori, T., Sutou, Y., Oikawa, K., Kainuma, R., Ishida, K., Shape memory effect associated with fcc–hcp martensitic transformation in Co–Al alloys (2003) Mater. Trans., 44, pp. 2732-2735; Nikolin, B.I., Shevchenko, N.N., Formation of new multilayered martensite phases in Co–Al alloys— demonstration of polytypism in metallic alloys (1981) Fiz. Met. Metalloved., 51, pp. 316-325; Grishchenko, O.P., Koval’, Y.N., Study of the shape-memory effect in Co–5 wt % Al alloy (2000) Metallofiz. Nov. Tekhn., 22, pp. 60-63; McAllster, A.J., The Al–Co (Aluminum–Cobalt) System (1989) Bull. Alloy Phase Diagrams, 10, pp. 646-649; http://wwwcrctpolymtlca/fact/documentation/SGTE2011/Al–Co.jpg, Phase Diagrams of Binary Metal Systems, Ed. by N. P. Lyakishev (Mashinostroenie, Moscow, 1996), Vol. 1. 7. Electronic Resource 2015; Wachtel, E., Linse, V., Gerold, V., Defect structure and magnetic moments in the ß-phases of CoAl and CoGa (1973) J. Phys. Chem. Solids, 34, pp. 1461-1466; Ishida, K., Recent progress on Co-base alloys—Phase diagram and application (2008) Arch. Metall. Mater., 53, pp. 1075-1088; Dutkiewicz, J., Kostorz, G., Structure of martensite in Co–W alloys (1991) Mater. Sci. Eng., A, 132, pp. 267-272
Correspondence Address	Kazantseva, N.V.; Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, ul. S. Kovalevskoi 18, Russian Federation; email: kazantseva-11@mail.ru
Publisher	Maik Nauka-Interperiodica Publishing
Language of Original Document	English
Abbreviated Source Title	Phys. Met. Metallogr.
Source	Scopus