Microstructure and wear properties of Hardox 450 steel surface modified by Fe-C-Cr-Nb-W powder wire surfacing and electron beam treatment

20th International Scientific and Research Conference "Metallurgy: Technologies, Innovation, Quality. Metallurgy-2017"

Gromov, V.E.^1 ; Kormyshev, V.E.^1 ; Glezer, A.M.^2 ; Konovalov, S.V.^3 ; Ivanov, Yu F.^4,5 ; Semin, A.P.^1

Siberian State Industrial University, 42 Kirov street, Novokuznetsk

654007, Russia^1

National University of Science and Technology MISIS, 4 Leninskiy ave, Moscow

119049, Russia^2

Academican S.P. Korolev Samara National Research University, 34 Moskovskoye Shosse, Samara

443086, Russia^3

Institute of High-Current Electronics of Siberian Branch, Russian Academy of Sciences, 2/3 Academicheskii ave, Tomsk

654052, Russia^4

Tomsk National Research State University, 36 Lenina ave, Tomsk

634050, Russia^5

关键词: Electron beam processing;    Electron-beam treatment;    Friction coefficients;    Material science;    Pulsed electron beams;    Structural-phase state;    Tribological properties;    Wear properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/411/1/012024/pdf
DOI  :  10.1088/1757-899X/411/1/012024

来源: IOP

【 摘 要 】

Structural phase states and tribological properties of the coating surfaced onto Hardox 450 martensite low-carbon steel with powder wire Fe-C-Cr-Nb-W and modified by subsequent electron-beam processing are studied by methods of modern physical material science. It is shown that irradiation of ∼ 5 mm thick surfaced layer with high intensity pulsed electron beams results in the formation of ∼ 20 μm thick surface layer with the master phases of α-Fe and NbC, Fe3C and M6C(Fe3W3C) carbides. It is established that wear resistance of the surfaced layer after electron-beam processing increases more than 70-fold relative to wear resistance of Hardox 450 steel and friction coefficient decreases significantly (∼3-fold).