Effect of TiB2 additives on sintering temperature, structure and properties of the composite material of the Fe- FeCr800 system
- 1 Frantsevich Institute for Problems in Materials Science, NASU, Kyiv, Ukraine
The effect of TiB2 additives on the sintering temperature, structure, and mechanical properties of materials based on the Fe-FeCr800 system is investigated. It was shown that the introduction of titanium diboride additives leads to the activation of compaction and to a 50–70ºС decrease in the sintering temperature of the pressed composites based on iron. It has been studied that the addition of titanium diboride in the range of 0.38-0.74 (% wt.) provides, with a slight increase in hardness, an increase of 20-25% of the flexural strength of the composite 65Fe-35 FeCr800800 (% wt.), and also provides the formation of a multiphase, microheterogeneous structure of the matrix-filled composite type, which consists of chromium steel of the X6Cr17 type, double iron-chromium carbides M7C3, M3C and complex carboborides of the Me3(CB) type.
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- ISO 4498-1-90 “Metal sintered materials, excluding solid alloys. Determination of apparent hardness. The materials are mainly with uniform hardness across the cross-section”.
- ISO 3327 "Alloys are solid. Determination of the tensile strength at the transverse bend".