Open AccessStructure and wear resistance of Fe-Cr-Mn-C-N coating obtained by electron beam overlay welding
Author(s) -
Н. А. Наркевич,
В. Е. Панин,
В. Г. Дураков,
И. А. Шулепов
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/862/2/022056
Subject(s) - materials science , coating , electron beam welding , welding , cathode ray , microstructure , metallurgy , composite material , austenite , electron , physics , quantum mechanics
The coating produced by electron beam overlay welding of a nitrogen alloyed austenitic steel (24.40Cr, 16.40Mn, 0.18Ni, 1.1Si, 0.57C, 0.70N, and bal Fe (in wt.%)) is investigated. Electron beam overlay welding is performed by a continuous low-energy (27 keV), low-current (0.02–0.04 A) focused electron beam using electron beam setup (ISPMS SB RAS, Russia) with a residual pressure of 0.1 Pa. This paper examines microstructure, phase composition, chemical composition of the coating by OM/AES/XRD/SEM/EDS methods. The obtained coating is pore-free and exhibits high work hardening characteristics. Friction loads induce the γ;→α′ transformation in the wear process. With increasing friction loads, the friction coefficient decreases.