Investigation of the structure and microhardness of Mo-Fe-C coatings obtained by the electron beam injected in the atmosphere

International Conference on Mechanical Engineering, Automation and Control Systems 2015

机械制造;无线电电子学;计算机科学

Mul, D.O.^1 ; Sorokova, S.N.^2 ; Martyushev, N.V.^2 ; Belousova, N.V.^1 ; Burov, V.G.^1 ; Koroleva, M.C.^1

Novosibirsk State Technical University, 20, Karla Marksa ave., Novosibirsk

630073, Russia^1

Tomsk Polytechnic University, 30, Lenina ave., Tomsk

634050, Russia^2

关键词: Electron beam claddings;    Gradient structure;    Measurements of;    Medium-carbon steels;    Non vacuum;    Powder mixtures;    Substrate material;    Transition zones;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/124/1/012115/pdf
DOI  :  10.1088/1757-899X/124/1/012115

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

In this work 'Mo-Fe-C' coatings fabricated on medium carbon steel by non-vacuum electron beam cladding were investigated. The structure of coatings and transition zones were studied by scanning electron microscopy (SEM). It was shown that an increase of Fe percentage in the cladding mixture led to a decrease of the eutectic volume fraction in the coating and was accompanied by the formation of the gradient structure between the coating and a substrate material. Measurements of microhardness in the cross section of samples revealed that the cladding of a 'Mo-C powder mixture contributed to a 4.5-fold increase of microhardness.