Fabrication of Cu-W nanocomposites by integration of self-propagating high-temperature synthesis and hot explosive consolidation technologies

Aydinyan, S. V.Kirakosyan, H. V.Zakaryan, M. K.Abovyan, L. S.Kharatyan, S. L.Peikrishvili, A.Mamniashvili, G.Godibadze, B.Chagelishvili, E. ShLesuer, D. R.Gutierrez, M.2024-07-242024-07-242018Aydinyan , S V , Kirakosyan , H V , Zakaryan , M K , Abovyan , L S , Kharatyan , S L , Peikrishvili , A , Mamniashvili , G , Godibadze , B , Chagelishvili , E S , Lesuer , D R & Gutierrez , M 2018 , ' Fabrication of Cu-W nanocomposites by integration of self-propagating high-temperature synthesis and hot explosive consolidation technologies ' , Eurasian Chemico-Technological Journal , vol. 20 , no. 4 , pp. 301-309 . https://doi.org/10.18321/ectj7631562-3920https://hdl.handle.net/11556/4321Publisher Copyright: © 2018 Al-Farabi Kazakh National University.Manufacturing W-Cu composite nanopowders was performed via joint reduction of CuO and WO3 oxides with various ratios (W:Cu = 2:1, 1:1, 1:3, 1:13.5) using combined Mg–C reducer. Combustion synthesis was used to synthesize homogeneous composite powders of W-Cu and hot explosive consolidation (HEC) technique was utilized to fabricate dense compacts from ultrafine structured W-Cu powders. Compact samples obtained from nanometer sized SHS powders demonstrated weak relation between the susceptibility and the applied magnetic field in comparison with the W and Cu containing micrometer grain size of metals. The density, microstructural uniformity and mechanical properties of SHS&HEC prepared samples were also evaluated. Internal friction (Q-1) and Young modulus (E) of fabricated composites studied for all samples indicated that the temperature 1000 °С is optimal for full annealing of microscopic defects of structure and internal stresses. Improved characteristics for Young modulus and internal friction were obtained for the W:Cu = 1:13.5 composite. According to microhardness measurement results, W-Cu nanopowders obtained by SHS method and compacted by HEC technology were characterized by enhanced (up to 85%) microhardness.9enginfo:eu-repo/semantics/openAccessFabrication of Cu-W nanocomposites by integration of self-propagating high-temperature synthesis and hot explosive consolidation technologiesjournal article10.18321/ectj763Hot explosive consolidationMechanical propertiesMicrohardnessSHSTungsten-copper nanocompositeGeneral ChemistryGeneral Chemical EngineeringGeneral Materials ScienceCondensed Matter Physicshttp://www.scopus.com/inward/record.url?scp=85060876035&partnerID=8YFLogxK