Kazakh British Technical University, «KBTU METALLUM» LLP (Almaty, Kazakhstan):

V. G. Mironov, Cand. Eng., Head of the Project “TOO KBTU SPLAV”,
G. T. Shilov, Senior Researcher, Mechanical Engineer
A. A. Bekisheva, Doctoral Candidate, e-mail: ardabekovna@mail.ru

JSC «Institute of Metallurgy and Ore Beneficiation» (Almaty, Kazakhstan):

Zh. B. Ilmaliyev, Head of the Staff

I. K. Beysembetov (Satbayev University, Kazakhstan) and B. K. Kenzhaliev (Institute of Metallurgy and Ore Beneficiation) were also the participants in this work.

Powders of Fe, Ni, Cr, Si, Cu, B, C and hardening additive CrB₂ ligature were used as initial reagents for creating self-fluxing surfacing powder. The synthesis of the composite material was carried out by mechanochemical method using an attritor. Optimization of the composition of new composite alloys with the addition of a chromium boron ligature was carried out and the conditions for the formation of the alloy were determined. The conditions of phase formation and the structure of a new composite filler with boride hardening under mechanical alloying were also studied. The following rational composition of powder alloy was obtained : Fe = 32–40 %; C = 1.1–1.4 %; Cr = 14–15 %; Si = 2–3 %; B = 2.0–2.9 %; Ni = 30–32 %, Cu = 2–3 % with a hardness of 30–44 HRC. The analysis of structure in blankets of surfacing alloy on the basis of iron is carried out it was carried out by means of the metallographic analysis.

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