PSI - Issue 20

Yakovleva S.P. et al. / Procedia Structural Integrity 20 (2019) 190–197 Yakovleva S.P. et al. / Structural Integrity Procedia 00 (2019) 000–000

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The obtained results can be used in the development of scientific bases for the production of high-performance diamond materials for instrumental purposes. 4. Conclusion Studies of the effect of explosive compaction and subsequent heat treatment on the diamond – iron-carbon alloys powder systems permitted us to obtain the following new scientific and applied results. 1. High-speed deformation of iron-carbon alloy powders in the explosive compaction process creates conditions for their hardening during subsequent heat treatment; depending on the charge power and heating temperature, the growth of microhardness of the studied powders was observed up to 2-3 times. The use of two-component matrixes of iron-carbon powders of different hardness (easily deformable and durable) can ensure the fulfillment of one of the most difficult requirements for abrasive materials – a simultaneous combination of hardness and plasticity. 2. Thermobaric conditions under the selected modes of explosive compaction and the use ofhigher hardness powders as part of the matrix made it possible to provide a much better preservation of the diamond component than with traditional methods of sintering. 3. Heat treatment increases the diamond retention of the obtained DMC, that manifests itself in a favorable change in the mechanism of destruction and removal of diamond particles during wear: the prevalence of microcracks along the diamond-matrix interface gives way to transcrystalline cleavage of diamond grains (respectively, their removal by the falling out mechanism is replaced by the chipping mechanism). 4. Experimental samples of DMC with wear resistance corresponding to the level of wear resistance of industrial diamond dressers, but at more than double saving of diamond raw materials were obtained. Acknowledgements The authors are grateful to the staff of the Institute of the Physical-Technical Problems of the North, SB RAS and the North-Eastern Federal University who helped with the experiments. The research was carried out within the state assignment of the Program of Fundamental Scientific Research of State Academies of Sciences for 2017-2020 (theme III.28.1.2). References Balasubramanian, M., 2014. Composite Materials and Processing. CRC Press, Taylor & Francis Group, XXI, pp. 598. Bondarenko, N. A., Novikov, N.V., Mechnik, V.A., Olejnik, G.S., Vereshhaka, V.M., 2004. Structural features of superhard composites of the diamond-hard alloy VK6 system, characterized by wear resistance. J. Superhard material 6, 3-15. Buzjurkin, A.E., Kiselev, S.P., 2002. Interaction between oblique shock waves in metal powders. J. Shock Waves 11, 5, 399-407. Buzjurkin, A.E., Kraus, E.I., Lukyanov, Ya. L., 2010. Theoretical and experimental investigation of shock wave stressing of metal powders by an explosion. J. VestnikNSU, Series: Physics 5(3), 71-78. Cui, Y., Xu, S.B., Zhang, L., Guo, S., 2011. Microstructure and Thermal Properties of Diamond-Al Composite Fabricated by Pressureless Metal Infiltration. J. Advanced Materials Research 150-151, 1110-1118. Gusev, B.V.,Kondrashhenko, V.I., Maslov, B.P., Fajvusovich, A.S., 2006. Formation of the composite materials structure and their properties. Nauchnyjmir, Moscow, pp. 560. Heinz, W. F., 1985. Diamonds, diamond bits, reaming shells, core barrels. Diamond Drilling Handbook, SADA, I-st Edition, Sigma Press, South Africa, pp. 136. Hsieh, Y.Z., Chen, J.F., Lin, S.T., 2000. Pressureless sintering of metal-bonded diamond particle composite blocks. Journal of materials science 35(21), 5383-5387. Hsieh, Y.Z., Lin, S.T., 2001. Diamond tool bits with iron alloys as the binding matrices. J. Materials Chemistry and Physics 72(2), 121 125. Krupin, A.V., Solovyev, V.Ya.,Sheftel, N.I., Kobelev, A.G., 1991. Treatment of metals by explosion. Metallurgy, Moscow, pp. 495. Kuzej, A.M., Lebedev, V.Ya., Franczkevich, A.V., 2009. The influence of the microstructure on the diamond wear nature in a monocristaldressable tool. J. Machining processes in mechanical engineering 7, 93-99. Makharova, S.N., Yakovleva, S.P., Vasilieva, M.I., Sivtseva, A.V., Yakovlev, V.G., 2015. Influence of the conditions for obtaining diamond abrasive composites with a matrix of iron-carbon alloys on their properties. J. Industrial laboratory 81(12), 48-54.