Development of the Process of Pseudo-Ligatures Manufacturing from Aluminum and Nickel Powders for the Modification of Alloys

Abstract:

Compacting after pressing and sintering of briquettes made from an aluminum powder with an average particle size from 50 to 150 microns, the specific surface area S_sp=0.26 m²/g and a nickel powder with an average particle size from 25 to 100 microns, the specific surface area S_sp= 0.03 m²/g has been investigated. Pressing load varied from 15 to 25 MPa for the aluminum powder and from 20 to 45 MPa for the nickel powder. Sintering of aluminum powder briquettes was carried out at temperatures (0.5-0.83) of melting temperature, (0.3-0.46) of melting temperature from the nickel powder. It is shown that the application of high pressure, low temperatures and short time makes it possible to receive pseudo-ligatures from an aluminum powder with porosity about 32% and a nickel powder with porosity about 30%.

• Periodical: Applied Mechanics and Materials (Volume 698)
• Pages: 452-456
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.698.452
• Online since: December 2014
• Authors: Ekaterina Nosova, Antonina A. Kuzina*, Anna V. Kuts
• Keywords: Aluminum Powder, Modification, Nickel Powder, Porosity, Pressing, Pseudo-Ligatures, Sintering

References

[1] A.V. Panfilov, The current state and prospects of development of cast aluminum matrix reinforced with discrete-composite materials. Caster Russia. 7 (2008) 23-28.

[2] A.P. Amosov, V.I. Nikitin, K.V. Nikitin, S.A. Ryazanov, A.A. Ermoshkin, Scientific and technical basis for the use of self-propagating high-temperature synthesis processes for creating cast aluminum matrix composite alloys discretely reinforced with nano-sized ceramic particles of high-tech materials technology and nanotechnology. 8 (2013).

[3] A.V. Petrunin, A.V. Panfilova, A.A. Panfilov, On the influence of modification by nanodimensional refractory particles on the structure and properties of aluminum matrix composites. Foundry production. 10 (2009) 17-20.

[4] V.I. Napalkov, S.V. Mahov, Alloying and modification of aluminum and magnesium, MISIS, Moscow, 2002, 376. (in Russian).

[5] O.V. Anisimov, Development of aluminum-based metal composites strengthened by nanoparticles of refractory compounds, News of universities, Powder metallurgy and the functional coverings. 3 (2011) 33-39.

[6] G.A. Kosnikov, V.A. Baranov, S. Yu. Petrovich, Foundry nano-structural composition alumo-matrix alloys. Foundry production. 2 (2012) 4-9.

[7] G.A. Libenson, V. Yu. Lopatin, G.V. Komarnitsky, Processes of powder metallurgy, The textbook for high schools in 2 parts, MISIS, Moscow, 2001, 684.

[8] I.E. Ignatiev, Yu.V. Kontsevoi, E.V. Ignatieva, E.A. Patukhov, Analysis of the main factors that determine the density of the powder compact, News of universities, Powder metallurgy and functional coatings. 3 (2010) 11-15.

[9] E.N. Osokin, Powder metallurgy process, IPK SFU, Krasnoyarsk, 2008, 421.

[10] Yu.N. Stepanov, S.A. Tikhomirov, Fluctuation melting and the initial stage of nanopowder sintering, Russian metallurgy (Metally). 3 (2007) 179-183.

DOI: 10.1134/s0036029507030032

[11] I. Chang, Y. Zhao, Advances in powder metallurgy: Properties, processing and applications. Woodhead Publishing Limited, 2013, 604.

[12] A.A. Bukaemskii, E.N. Fedorova, Explosive compaction and low-temperature sintering of alumina nanopowders. Combustion, Explosion, and Shock Waves. 44, (2008) 717-728.

DOI: 10.1007/s10573-008-0108-8

[13] N.G. Kolbasnikov, Theory of metal forming. Physical basis of the strength and ductility of metals. St. Petersburg State Polytechnical University, 2004, 268.

[14] Yu.N. Stepanov, M.I. Alymov, E.I. Evstratov, Effect of temperature on the shrinkage rate of compacts composed of nanoparticles. Glass Physics and Chemistry. 31 (2005) 337-339.

DOI: 10.1007/s10720-005-0065-1

[15] Yu.N. Stepanov, Features the initial stage of sintering of nanopowders with the oxidized surface. Physics and chemistry of materials processing. 6 (2010) 51-55.

[16] G.G. Krushenko, The role of particles of nanopowders when forming structure of aluminum alloys. Metallurgy of mechanical engineering. 1 (2011) 20-24.