Copper Alloys Structure Parameters

Abstract:

In this research it was examined the influence of crystallisation conditions binary leaded bronze on parametres of a received microstructure. Change of crystallisation conditions was carried out by change of cooling melt speed, through preliminary heating of casting moulds. Quantitative regularities of influence of cooling rate of explored bronze on parametres dendritic cells, grain size are presented. The data about formation of lead inclusions between dendrites of a copper matrix are published as well. It is shown that high rates of cooling of an order 100-150°С/c lead to dendritic structures formation containing only axes of the first and second order. Decrease of cooling rate at the moment of crystallisation to the values less 15°C/c leads to appearance and growth of axes of 3rd order at dendrites matrix.

• Periodical: Advanced Materials Research (Volume 1040)
• Pages: 225-229
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1040.225
• Online since: September 2014
• Authors: Nikita V. Martyushev*
• Keywords: Bronze, Copper, Crystallization, Dendrites

References

[1] N.A. Ploskov, V.I. Danilov, L.B. Zuev, A.S. Zavodchikov, I.O. Bolotina, D.V. Orlova, Evolution of strain localization autowaves in a zirconium alloy and evaluation of plasticity margin in a rolling area, Journal of Applied Mechanics and Technical Physics.  53  (2012).

DOI: 10.1134/s0021894412040153

[2] N.A. Ploskov, V.I. Danilov, L.B. Zuev, I.O. Bolotina, D.V. Orlova, Analysis of the plasticity margin in a rolling site, Russian Physics Journal.  54  (2012) 1389 - 1393.

DOI: 10.1007/s11182-012-9759-8

[2] N.V. Martyushev, E.N. Pashkov, Tribotechnical properties lead bronzes,  Applied Mechanics and Materials. 379 (2013) 87 - 90.

DOI: 10.4028/www.scientific.net/amm.379.87

[3] N.V. Martyushev, E.N. Pashkov, Bronze sealing rings defects and ways of its elimination,  Applied Mechanics and Materials. 379 (2013) 82 - 86.

DOI: 10.4028/www.scientific.net/amm.379.82

[4] I.G. Vidayev, N.V. Martyushev, A.S. Ivashutenko, A.M. Bogdan, The resource efficiency assessment technique for the foundry production, Advanced Materials Research.  880 (2014) 141 - 145.

DOI: 10.4028/www.scientific.net/amr.880.141

[5] I.O. Bolotina, V.I. Danilov, A.A. Zagumennyi, Plastic macrodeformation of polycrystalline and submicrocrystalline titanium for biomedical applications, Journal of Applied Mechanics and Technical Physics.  49  (2008) 484 - 490.

DOI: 10.1007/s10808-008-0065-8

[6] T.V. Nekrasova, A.G. Melnikov, N.V. Martyushev, Creation of ceramic nanocomposite material on the basis of ZrO2-Y2O3-Al2O3 with improved operational properties of the working surface,  Applied Mechanics and Materials. 379 (2013) 77 - 81.

DOI: 10.4028/www.scientific.net/amm.379.77

[7] D. Empl, V. Laporte, E. Vincent, N. Dewobroto, A. Mortensen, Improvement of elevated temperature mechanical properties of Cu–Ni–Sn–Pb alloys, Materials Science and Engineering A. 527 (2010) 4326–4333.

DOI: 10.1016/j.msea.2010.03.056

[8] Ugur Ozsarac, Fehim Findik, Mehmet Durman, The wear behaviour investigation of sliding bearings with a designed testing machine, Materials and Design. 28 (2007) 345–350.

DOI: 10.1016/j.matdes.2005.05.017

[9] Osmo Teppo, Jaana Niemelä, Pekka Taskinen, The copper-lead phase diagram, Thermochimica Acta. 185, Issue 1 (1991) 155-169.

DOI: 10.1016/0040-6031(91)80126-4

[10] I.G. Gorshkov, Molding of ingots of non-ferrous metals and alloys: manual, MetallurgIzdat, Moscow, (1952).

[11] N.V. Martyushev, Y.N. Petrenko, Effects of crystallization conditions on lead tin bronze properties,   Advanced Materials Research.  880 (2014) 174 - 178.

DOI: 10.4028/www.scientific.net/amr.880.174

[12] S. Yu. Tarasov, A.V. Kolubaev, Generation of shear bands in subsurface layers of metals in sliding, Physics of the Solid State. 50 (2008)  844 - 847.

DOI: 10.1134/s1063783408050077