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Synthesis and electron beam facing oftitanium monoboride – titanium matrix composite powders
https://doi.org/10.22349/1994-6716-2018-93-1-88-102
Abstract
Titanium monoboride – titanium matrix composite powders have been synthesized by self-propagating high temperature synthesis (SHS) in titanium and boron reactive powder mixtures. Titanium matrix (binder) content varied from 20 to 60%. The SHS powders were cladded on VT1-0 titanium sheet by electron beam facing. Cladded coatings’ thickness varied from 1 to 3 mm depending on the pass number. Phase composition and structure of powders and coatings were investigated by X-ray diffraction, optical and scanning electron microscopy. According to structure investigation and hardness profiles view in the “coating – titanium base plate” transition zone an adhesion of the coating to the base is high. The hardness and abrasive wear resistance tests of the cladded coatings were carried out depending on the powder used for cladding. The maximum hardness of the coatings strengthened by eagle-like titanium monoboride inclusions as compared with VТ1-0 base increases 2.2 times and abrasive wear resistance 3.7 times. According to previously obtained results hardening and abrasive wear resistance of titanium monoboride is much weaker than that of titanium carbide: hardness increases 1.7 times, wear resistance 5.8 times.
Keywords
self-propagating high-temperature synthesis,
metal-matrix composites,
titanium monoboride,
titanium,
surfacing,
microstructure,
hardness,
abrasive wear resistance
Supporting agencies: Russian Science Foundation (grant No. 17-19-01425).
About the Authors
G. A. Pribytkov
Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS)
Russian Federation
Russian Federation
Dr Sc. (Eng)
2/4 Akademichesky Ave., 634055 Tomsk
V. V. Korzhova
Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS)
Russian Federation
Russian Federation
Cand Sc. (Eng)
2/4 Akademichesky Ave., 634055 Tomsk
M. G. Krinitsyn
Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS)
Russian Federation
2/4 Akademichesky Ave., 634055 Tomsk
Russian Federation
2/4 Akademichesky Ave., 634055 Tomsk
I. A. Firsina
Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences (ISPMS SB RAS)
Russian Federation
Russian Federation
Cand Sc. (Eng)
2/4 Akademichesky Ave., 634055 Tomsk
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For citations:
Pribytkov G.A., Korzhova V.V., Krinitsyn M.G., Firsina I.A. Synthesis and electron beam facing oftitanium monoboride – titanium matrix composite powders. Voprosy Materialovedeniya. 2018;(1(93)):88-102. (In Russ.) https://doi.org/10.22349/1994-6716-2018-93-1-88-102
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