Nanocrystalline structure formation in EK-181 steel surface layers on ultrasonic treatment

A. V. Panin, E. A. Melnikova, O. B. Perevalova, Yu I. Pochivalov, M. V. Leontyeva-Smirnova, V. M. Chernov, Yu F. Ivanov

Research Center for Physical Materials Science and Composite Materials

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

Abstract

The microstructure and the phase composition of surface layers of ferritic-martensitic EK-181 steel (Fe-12Cr-2W-V-Ta-B-C) subjected to various combinations of ultrasonic and heat treatment were examined. It is shown that a nanocrystalline a-phase structure with grain boundaries on which vanadium carbide particles precipitate is formed only on intermediate ultrasonic treatment between quenching and ageing. The intermediate ultrasonic treatment provides the greatest increase in the yield limit of the test specimens under uniaxial tension. A correlation is found between the microstructure, the mechanical characteristics and the fracture mode.

Original language	English
Pages (from-to)	150-159
Number of pages	10
Journal	Physical Mesomechanics
Volume	12
Issue number	3-4
DOIs	https://doi.org/10.1016/j.physme.2009.07.007
Publication status	Published - 2009

Keywords

fracture fractography
mechanical properties
microstructure
phase composition
surface nanostructuring

ASJC Scopus subject areas

Mechanics of Materials
Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces

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10.1016/j.physme.2009.07.007

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title = "Nanocrystalline structure formation in EK-181 steel surface layers on ultrasonic treatment",

abstract = "The microstructure and the phase composition of surface layers of ferritic-martensitic EK-181 steel (Fe-12Cr-2W-V-Ta-B-C) subjected to various combinations of ultrasonic and heat treatment were examined. It is shown that a nanocrystalline a-phase structure with grain boundaries on which vanadium carbide particles precipitate is formed only on intermediate ultrasonic treatment between quenching and ageing. The intermediate ultrasonic treatment provides the greatest increase in the yield limit of the test specimens under uniaxial tension. A correlation is found between the microstructure, the mechanical characteristics and the fracture mode.",

keywords = "fracture fractography, mechanical properties, microstructure, phase composition, surface nanostructuring",

author = "Panin, {A. V.} and Melnikova, {E. A.} and Perevalova, {O. B.} and Pochivalov, {Yu I.} and Leontyeva-Smirnova, {M. V.} and Chernov, {V. M.} and Ivanov, {Yu F.}",

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language = "English",

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T1 - Nanocrystalline structure formation in EK-181 steel surface layers on ultrasonic treatment

AU - Panin, A. V.

AU - Melnikova, E. A.

AU - Perevalova, O. B.

AU - Pochivalov, Yu I.

AU - Leontyeva-Smirnova, M. V.

AU - Chernov, V. M.

AU - Ivanov, Yu F.

PY - 2009

Y1 - 2009

N2 - The microstructure and the phase composition of surface layers of ferritic-martensitic EK-181 steel (Fe-12Cr-2W-V-Ta-B-C) subjected to various combinations of ultrasonic and heat treatment were examined. It is shown that a nanocrystalline a-phase structure with grain boundaries on which vanadium carbide particles precipitate is formed only on intermediate ultrasonic treatment between quenching and ageing. The intermediate ultrasonic treatment provides the greatest increase in the yield limit of the test specimens under uniaxial tension. A correlation is found between the microstructure, the mechanical characteristics and the fracture mode.

AB - The microstructure and the phase composition of surface layers of ferritic-martensitic EK-181 steel (Fe-12Cr-2W-V-Ta-B-C) subjected to various combinations of ultrasonic and heat treatment were examined. It is shown that a nanocrystalline a-phase structure with grain boundaries on which vanadium carbide particles precipitate is formed only on intermediate ultrasonic treatment between quenching and ageing. The intermediate ultrasonic treatment provides the greatest increase in the yield limit of the test specimens under uniaxial tension. A correlation is found between the microstructure, the mechanical characteristics and the fracture mode.

KW - fracture fractography

KW - mechanical properties

KW - microstructure

KW - phase composition

KW - surface nanostructuring

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