Structure of the surface layer of a wear-resistant coating after treatment with a high-intensity electron beam

Raykov, S. V.; Kapralov, E. V.; Vashchuk, E. S.; Будовских, Е. А.; Gromov, V. Е.; Ivanov, Yu. F.; Тересов, А. Д.; Соснин, К. В.

doi:10.1134/s1027451015050134

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…High hardness Hardox 450 steel is obtained by quenching a sheet with special composition to generate martensite structure. To improve its technological properties further, the steel underwent additional modification including surface processing for obtaining the demanded properties [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Structure and properties of strengthening layer on Hardox 450 steel

Ivanov

Gromov

Konovalov

et al. 2017

Materials Science and Technology

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The microstructure and microhardness distribution in the surface of low-carbon Hardox 450 steel coated with alloyed powder wires of different chemical compositions are studied. It is shown that the microhardness of 6–8 mm-thick surfaced layer exceeds that of base metal by more than two times. The increased mechanical properties of surfaced layer are caused by the submicro and nanoscale dispersed martensite, containing the niobium carbides Nb2C, NbC and iron borides Fe2B. In the bulk plates, a dislocation substructure of the net-like type with scalar dislocation density of 1011 cm−2 is observed. The layer surfaced with the wire containing B possesses highest hardness. The possible mechanisms and temperature regimes of niobium and boron carbides in surfacing are discussed.

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Section: Introductionmentioning

confidence: 99%

Structure and properties of strengthening layer on Hardox 450 steel

Ivanov

Gromov

Konovalov

et al. 2017

Materials Science and Technology

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“…1,6 мм, химический состав которых приведен ниже: Формирование наплавленного слоя на поверхность стали осуществляли в среде защитного газа, содержа-щем 98 % Ar, 2 % CO 2 , при сварочном токе 250 -300 А и напряжении на дуге 30 -35 В. Модифицирование наплавленного слоя осуществляли путем облучения поверхности наплавленного слоя высокоинтенсивным электронным пучком как и в работе [14] в режиме плав-ления и высокоскоростной кристаллизации. Режим облучения следующий: на первом этапе плотность энергии пучка электронов в импульсе -30 Дж/см 2 ; длительность импульсов -200 мкс; количество им-пульсов -20; на втором этапе плотность энергии в им-пульсе -30 Дж/см 2 ; длительность импульсов -50 мкс; количество импульсов -1.…”

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Surface Nanohardness of Wear Resistant Surfacing Irradiated by Electron Beam

Кормышев¹,

Иванов²,

Gromov³

et al. 2017

Izv. vysš. učebn. zaved., Čern. metall.

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Section: Introductionmentioning

confidence: 99%

Phase Composition and Defect Substructure of Strengthening Layer Surfaced on Low Alloyed Steel

Ivanov

Громов

Коновалов

et al. 2018

JMNM

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Abstract. The microstructure and microhardness distribution in surface of low carbon Hardox 450 steel coated with alloyed powder wires of different chemical compositions are studied. It is shown that the microhardness of 6-8 mm thickness surfaced layer exceeds that of base metal by more than 2 times. The increased mechanical properties of surfaced layer are caused by the submicro and nanoscale dispersed martensite, containing the niobium carbides Nb2C, NbC and iron borides Fe2B. In the bulk plates a dislocation substructure of the net-like type with scalar dislocation density of 1011 cm-2 is observed. The layer surfaced with the wire containing B possesses the highest hardness. The possible mechanisms of niobium and boron carbides formation in surfacing are discussed.

show abstract

Structure of the surface layer of a wear-resistant coating after treatment with a high-intensity electron beam

Cited by 5 publications

References 3 publications

Structure and properties of strengthening layer on Hardox 450 steel

Structure and properties of strengthening layer on Hardox 450 steel

Surface Nanohardness of Wear Resistant Surfacing Irradiated by Electron Beam

Phase Composition and Defect Substructure of Strengthening Layer Surfaced on Low Alloyed Steel

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