Structure and wear resistance of R6M5 steel based coatings

Abstract

Features of the structure of R6M5 steel based coatings obtained by multiscan electron-beam fusion of a hardening composition in vacuum have been studied. It is established that the carbide subsystem of the hardened layer is characterized by a multimodal distribution of carbide particles with d₁ = 3.8 μm, d₂ = 0.65 μm, and d₃ < 0.25 μm. The volume fraction of M₆C secondary carbide and retained matrix austenite can be controlled within broad limits by varying thermal parameters of the electron-beam fusion. An increase in the retained austenite fraction in the coating leads to improved wear resistance due to the γ → α′ marten-site transformation during friction and the presence of dispersed secondary carbides inside the matrix grains.

Original language	English
Pages (from-to)	745-748
Number of pages	4
Journal	Technical Physics Letters
Volume	36
Issue number	8
DOIs	https://doi.org/10.1134/S1063785010080201
Publication status	Published - 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Structure and wear resistance of R6M5 steel based coatings",

abstract = "Features of the structure of R6M5 steel based coatings obtained by multiscan electron-beam fusion of a hardening composition in vacuum have been studied. It is established that the carbide subsystem of the hardened layer is characterized by a multimodal distribution of carbide particles with d1 = 3.8 μm, d2 = 0.65 μm, and d3 < 0.25 μm. The volume fraction of M6C secondary carbide and retained matrix austenite can be controlled within broad limits by varying thermal parameters of the electron-beam fusion. An increase in the retained austenite fraction in the coating leads to improved wear resistance due to the γ → α′ marten-site transformation during friction and the presence of dispersed secondary carbides inside the matrix grains.",

author = "Gnyusov, {S. F.} and Ignatov, {A. A.} and Durakov, {V. G.}",

year = "2010",

doi = "10.1134/S1063785010080201",

language = "English",

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pages = "745--748",

journal = "Technical Physics Letters",

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T1 - Structure and wear resistance of R6M5 steel based coatings

AU - Gnyusov, S. F.

AU - Ignatov, A. A.

AU - Durakov, V. G.

PY - 2010

Y1 - 2010

N2 - Features of the structure of R6M5 steel based coatings obtained by multiscan electron-beam fusion of a hardening composition in vacuum have been studied. It is established that the carbide subsystem of the hardened layer is characterized by a multimodal distribution of carbide particles with d1 = 3.8 μm, d2 = 0.65 μm, and d3 < 0.25 μm. The volume fraction of M6C secondary carbide and retained matrix austenite can be controlled within broad limits by varying thermal parameters of the electron-beam fusion. An increase in the retained austenite fraction in the coating leads to improved wear resistance due to the γ → α′ marten-site transformation during friction and the presence of dispersed secondary carbides inside the matrix grains.

AB - Features of the structure of R6M5 steel based coatings obtained by multiscan electron-beam fusion of a hardening composition in vacuum have been studied. It is established that the carbide subsystem of the hardened layer is characterized by a multimodal distribution of carbide particles with d1 = 3.8 μm, d2 = 0.65 μm, and d3 < 0.25 μm. The volume fraction of M6C secondary carbide and retained matrix austenite can be controlled within broad limits by varying thermal parameters of the electron-beam fusion. An increase in the retained austenite fraction in the coating leads to improved wear resistance due to the γ → α′ marten-site transformation during friction and the presence of dispersed secondary carbides inside the matrix grains.

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JO - Technical Physics Letters

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Structure and wear resistance of R6M5 steel based coatings

Abstract

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