Structure and Properties of Wear Resistant Layers Fabricated by Non-Vacuum Electron Beam Cladding

被引：0
|
作者：
Lenivtseva, O. G. [1 ]
Krivezhenko, D. S. [1 ]
Alferova, G. I. [1 ]
Mul, D. O. [1 ]
Chuchkova, L. V. [1 ]
机构：
[1] Novosibirsk State Tech Univ, Dept Mat Sci Engn, Novosibirsk, Russia
来源：
2016 11TH INTERNATIONAL FORUM ON STRATEGIC TECHNOLOGY (IFOST), PTS 1 AND 2 | 2016年
关键词：
Titanium; Titanium carbide; Titanium boride; Electron beam cladding; Microstructure; Microhardness; FORMATION MECHANISM; SURFACE-LAYERS; TITANIUM; COMPOSITES; TI-6AL-4V; MICROSTRUCTURE; COATINGS; IRRADIATION; IMPROVEMENT; HARDNESS;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The non-vacuum electron beam cladding technology was used to increase wear resistance of commercially pure (CP) titanium by coating the titanium substrate with a powder mixture of boron carbide and titanium. The structure of samples was investigated by optical and scanning electron microscopy. Structural investigations revealed that fabricated materials consisted of three zones: a cladded layer, a heat affected zone and a titanium initial structure area. A thickness of the cladded layer depended on the treatment parameters and was equal to 1.2 - 1.4 mm. The main strengthening phases observed in the coatings were: titanium boride and titanium carbide particles. The aforementioned particles increased hardness and wear resistance of titanium. The maximum microhardness value of the coatings corresponded to a beam current of 27 mA. The data obtained were in a good correlation with the data of tribological tests. Wear resistance of the coatings was 1.85-fold higher than that of CP-titanium.
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页数：4
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