Structure, phase composition and hardness of coatings produced by high-energy electron beam cladding Cr3C2 and TiC powder mixture on a low carbon steel

2018 ◽  
pp. 43-49 ◽  
Author(s):  
T.A. Krylova ◽  
◽  
K.V. Ivanov ◽  
V.E. Ovcharenko ◽  
◽  
...  
Keyword(s):  
Electron Beam ◽  
Phase Composition ◽  
Carbon Steel ◽  
Powder Mixture ◽  
Low Carbon Steel ◽  
High Energy ◽  
Energy Electron ◽  
Low Carbon ◽  
High Energy Electron ◽  
Structure Phase

Microstructural and Mechanical Properties of TiC, TiB2 and VC with Low Carbon Steel Surface Alloy Fabricated by High Energy Electron Beam Irradiation

2005 ◽  
Vol 475-479 ◽  
pp. 3927-3930
Author(s):  
Kee Sam Shin ◽  
Jung Hoon Yoo ◽  
Sung Hak Lee ◽  
Kenji Kaneko ◽  
Yoshitsugu Tomokiyo
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Carbon Steel ◽  
Irradiation Time ◽  
Low Carbon Steel ◽  
High Energy ◽  
Energy Electron ◽  
Low Carbon ◽  
High Energy Electron ◽  
The Matrix

Because of its excellent process advantages such as high energy efficiency, short irradiation time and rapid heating, high energy electron beam (HEEB) irradiation is becoming of interest as a future surface modification technology. In this study, surface alloying of TiC, TiB2 and VC ceramic particles with a low carbon steel substrate was carried out using HEEB of 1.4 MeV. Surface alloyed layers of all the specimens were about 2 mm thick and consisted of a melted region, an interface region, a heat affected zone (HAZ) and the matrix. In all the specimens, the hardness at the surface was the highest, and then decreased sharply into the interior reaching the lowest values at the matrix. A remarkable increase in the mechanical properties was observed for the VC surface alloyed specimen. Vanadium carbides of large (~ 5 µm) and fine sizes (~ 20 nm) were formed uniformly, which resulted in an increase of hardness to 2-3 times of that of the matrix, and highest wear resistance.

scholarly journals Thermodynamic aspects of electron-beam surface modification of low-carbon steel

2021 ◽  
Vol 1198 (1) ◽  
pp. 012009
Author(s):  
U L Mishigdorzhiyn ◽  
A S Milonov ◽  
P A Gulyashinov ◽  
N S Ulakhanov ◽  
A P Semenov
Keyword(s):  
Surface Modification ◽  
Electron Beam ◽  
Phase Composition ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Xrd Analysis ◽  
Carbon Steels ◽  
Low Carbon ◽  
Beneficial Impact ◽  
Beam Surface

Abstract Multicomponent surface modification of carbon steels is of high interest in mechanical engineering due to its beneficial impact on machine components’ and structures’ surface properties. The present research was devoted to simulating the process of aluminides and borides formation on the surface of low-carbon steel during electron beam alloying and predict the phase composition of the obtained coatings. Computational thermodynamics and approximate calculation method were used to solve the problem mentioned above. Calculations were done in the temperature range between 200 and 2000 K at 10−3 Pa. It was discovered that the calculated and experimental data of the coating’s phase composition differs significantly. The only confirmed phase that was predicted by the calculations was sodium fluoride (NaF). It was established that NaF presence in the treatment paste was redundant for the electron beam alloying because of its low reactivity in a vacuum. XRD analysis revealed the following phases in the coating: Fe2B, Fe3C, and AlFe3.

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