Multi-layer structure of the diffusion zone of the AL-NI system
DOI:
https://doi.org/10.31643/2018/445.10Keywords:
contact melting, scanning electron microscopy and electron probe microanalysis, diffusion zone, multilayer structure, intermetallics, Al- Ni diagram.Abstract
The diffusion zone of Al-Ni system has been studied using the contact melting method. The microstructure and element composition in cross section of samples have been studied by means of scanning electron microscopy and electron probe microanalysis (SEM-EPMA). The multilayer structure of intermetallics of Al- Ni system has been formed after isothermal treatment in range of 1000-1300 °С. Due to interaction between Al and Ni the width of diffusion zone is growing along with duration of isothermal treatment. Few layers having different phase compositions and widths are formed in contact zone depending on established concentration of metals. Each of the observed layers has its own clear boundaries and structure pattern. Four compounds with the variable compositions Al51Ni49, Al36Ni64, Al30Ni70 and Al32Ni68 have been revealed at 1000-1300°С due to comparison of element distribution in the depth of diffusion zone with its microstructure. The layers are seemed as homogenous and having more smooth boundaries from Ni side. Meanwhile from Al side the layer structure acquires the island-type form, and boundaries become more irregular with dendrite appearance. The intermetallic compounds have been obtained at various temperatures; they correspond pre-established phases with registered compositions (daltonides): Al3Ni, Аl3Ni2, ΑΙNi(β), ΑlNi3(α’), Аl3Ni5. The agglomerates of pores and cracks could be caused by stresses between the layers are detected. The formation of pores in case of the developed layer microstructure is related to Frenkel effect.
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References
Bokiy G.B. Kristallokhimiya (Crystal chemistry) Moskow: Science. 1971, 400. (in Russ.).
Oskaya C., Rudolphia M., Affeldtb E.E., Schützea M., GaletzaM.C. Evolution of microstructure and mechanical properties of NiAl - Diffusion coatings after thermocyclic exposure. Intermetallics. 2017. 89, 22–31. (in Eng.)
Geguzin Ya. E. Diffuzionnaya zona. (Diffusion zone). Moskow. Science. 1979. 344. (in Russ.).
Shmorgun V.G., Trykov Yu. P., Bogdanov A.I., Taube A.O., Evstropov D.A. Kinetika vzaimodejstviya alyuminiya i nikelya pri zhidkofaznom formirovanii diffuzionnoj zony. (Kinetics of the interaction of aluminum and nickel in the liquid-phase formation of the diffusion zone). Vestnik Sibirskogo gosudarstvennogo industrial’nogo universiteta= Bulletin of the Siberian State Industrial University. 2014. 2 (8), 5–6. (in Russ.).
Murr L.E., Johnson W.L. 3D metal droplet printing development and advanced materials additive manufacturing. Journal of Materials Research and Technology. 2017. 6(1), 77– 89. https://doi.org/10.1016/j.jmrt.2016.11.002
Sharman A.R.C., Hudges J.I., Ridgway. Characterisation of titanium components manufactured by laser metal deposition. Intermetallics. 2018. 93, 89–92. (in Eng.).
Sentyurina Zh. A. Poluchenie sfericheskikh poroshkov iz splavov na osnove alyuminida nikelya Ni-Al dlya additivnykh tekhnologij. (Production of spherical powders from alloys based on nickel aluminide Ni-Al for additive technologies) Dissertaciya. Spec.: 05.16.06 - Poroshkovaya metallurgiya i kompozitsionnye materialy. (Thesis. Special: 05.16.06 - Powder metallurgy and composite materials).MISiS. Moskow 2016. 168. (in Russ.).
Ibraeva G.M., Sukurov B.M. Issledovanie diffuzionnoj zony zharoprochnyh splavov sistemy Al-Co, formiruyuschejsya v izotermicheskih usloviyah. (Investigation of the diffusion zone of high-temperature alloys of the Al-Co system, which forms under isothermal conditions). Innovatsionnoye razvitiye i vostrebovannost nauki v sovremennom Kazakhstane: sb. tr. V mezhdunar. nauch. konf (Innovative development and demand for science in modern Kazakhstan: Sat. tr. In the Intern. sci. conf ). Almaty, Kazakhstan, 2011. 4. 175–178. (in Russ.).
Aubakirova R. K., Mansurov Yu. N., Sukurov B. M., Ibraeva G. M. Mnogoslojnaya struktura intermetallidov v diffusionnoj zone sistemy Al-Co. (Multilayer structure of intermetallides in the diffusion zone of the Al-Co system) Kompleksnoe ispol’zovanie mineral’nogo syr’ya = Complex use of mineral resources. 2018. 1, 59–70. (in Russ.).
Predel B. (1991) Madelung O. (ed.) Springer Materials Al-Ni (Aluminum-Nickel) Landolt-Börnstein - Group IV Physical Chemistry 5A (Ac-Au – Au-Zr) http://materials.springer.com/lb/docs/sm_lbs_978-3-540-39444- 0_125 10.1007/10000866_125 (Springer-Verlag Berlin Heidelberg © 1991) Accessed: 12-02-2018. (in Eng.)
Ibraeva G.M., Shamelkhanova N.A. Issledovanie zon diffuzionnogo vzaimodeystviya komponentov splava Al-Co v protsesse izotermicheskoj vyderzhki ( Investigation of the zones of diffusion interaction of the components of the Al-Co alloy in the process of isothermal aging) Kompleksnoe ispol’zovanie mineral’nogo syr,ya = Complex use of mineral resources. 2011. 6, 68–72. (in Russ.).
Thermo-Calc Software. Thermocalc State Variables and State Variables. Stockholm: Sweden. 2006, 748. (in Eng.).
Simões S., Viana F., Ramos A.S., Vieira M.T., Vieira M.F. Anisothermal solid-state reactions of Ni/Al nanometric multilayers. Intermetallics. 2011. 19. 350–356. https://doi.org/10.1016/j.intermet.2010.10.021
Krasnowski М, Gierlotka S.,Kulik Т. Nanocrystalline Al3Ni2 alloy with high hardness produced by mechanical alloying and high-pressure hot-pressing consolidation. Intermetallics, 2013 42. 35–40. https://doi.org/10.1016/j.intermet.2013.05.017
Andasmas М., Chauveau Т., Fagnon N., Vrel D. Synthesis of NiAl intermetallics from cold-extruded samples. Intermetallics. 2013. 32. 137–144 https://doi.org/10.1016/j.intermet.2012.08.019
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Copyright (c) 2018 Ibrayeva, G., Sukurov, B., Aubakirova, R., & Mansurov, Y.
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