Article
Cover
![№1 2017](../journal/archive/19/cover.jpg)
Title
Modifying the liquid phase with nanoscale powders in the process of welding and claddingAuthors
1P. Tashev, 1N. Alexiev, 1V. Manolov, 2A.N. CherepanovOrganizations
1Institute of Metal Science, Equipment and Technologies «Acad. A. Balevsci» with Haydroaerodinamics centre – BASSofia, Bulgaria
2Khristianovich Institute of Theoretical and Applied Mechanics of the Siberian Branch RAS
Novosibirsk, Russian Federation
Abstract
Experimental studies of effect of nanomodifying powders of refractory compounds on properties of weld seam at welding of aluminum alloy and cladding a protective coating on a steel plate were conducted. The welding of aluminum alloy AMg6 was carried out using an electric arc welding with nonconsumable (tungsten) electrode (TIG welding). The modifying agent was nanoscale powder of TiCN refractory compound. Additional electrode (modifying powder wire) was produced using a vibrating ball mill, in which a mixture of sliced standard additional wire AMg6 and nanopowder TiCN had been prepared. The mixture was placed in a thin-walled container made of AMg6, compacted, and then, it was extruded using a vertical press. As a result, wires with diameter of 3 mm were obtained, containing 2 % of TiCN and 0.7 % of TiCN, respectively. Welds were obtained with the standard additional wire and modified wire containing TiCN. The protective coating for steel was deposited using plates with thickness of 3 mm made of steel S235JR. Beforehand, they were subjected to mechanical cleaning and degreasing. The depositing was accomplished by the TIG method. The coating was standard additional wire DT-SGMo by DIN 8576 with diameter of 1.6 mm. The wire surface was covered by a thin film containing chromium clad TiN nanoparticles. The cladding was accomplished by mechanical chemical treatment in a planetary mill. The studies have shown that the modification by nanopowders leads to a substantial refinement of the seam structure and increase of its hardness both for aluminum alloy and structural steel cladding.Keywords
TIG welding, protective coating, nanopowders, aluminum alloy, steel plate, structure, hardnessReferences
[1] Krushenko G. G., Mishin A. S. Svarka listov iz splava AMg6 prutkom, soderzhashchem ultradispersnie poroshki [Welding of sheets of AMg6 alloy rod containing ultrafine powders]. Svarochnoe proizvodstvo, 1995, no. 1, pp. 2–3. (In Russian).
[2] Balashov B. A., Krushenko G. G., Lepikhin A. M. Primenenie modifiziruyushchego prutka Al-Ti-Be v svarke aluminiya i aluminievikh splavov [The use of the modified rod, Al–Ti–Be in the welding of aluminum and aluminum alloys]. Sovremennie problemi svarochnoy nauki i tekhniki, Materiali Rossiiskoy Nauchno-tekhnich. Conf., Part. I, Perm, pp. 197–198. (In Russian).
[3] Plasmokhimichesky sintez ultradispersnikh poroshkov i ih primenenie dlya modifizi-rovanya metallov i splavov [Plasmochemical synthesis of ultrafine powders and their application for modification of steels and alloys]. V. P. Saburov, A. N. Cherepanov, M. F. Zhukov, e.a. Novosibirsk, Nauka, 1995, p. 330. (In Russian).
[4] Cherepanov A. N., Afonin Yu. V., Malikov A. G., Orishich A. M. O primenenii nanoporoshkov tugoplavkikh soedineny pri lasernoy obrabotke materialov [On the application of nanopowders of refractory compounds in the welding and processing of metals and alloys]. Tyazheloe Mashinostroenie, 2008, no. 4, pp. 25–26. (In Russian).
[5] Cherepanov A. N., Ovcharenko V. E. Vliyanie nanostrukturirovannikh komposizi-onnikh poproshkov na strukturu i svoystva zharoprochnogo splava Inconei 718. [Effect of Nanostructured Composite Powders on the Structure and Strength Properties of the Hightemperature Inconel 718 Alloy]. Fisika metallov i metallovedenie, 2015, vol. 116, no. 12, pp. 1339–1344. (In Russian).
[6] Karaguiozova Z., Manolov V., Tarasov M. Elektroless iron coating on nanosized particles, Tribological Journal BULTRIB, 2011, vol. 2, no. 2, pp. 73–79.
[7] Krushenko G. G. Sposob izgotovleniya elektrodnoy provoloki dlya svarki alyuminievykh splavov. [A method of manufacturing an electrode wire for welding of aluminium alloys]. Patent RF, no. 2429958, 2011.
For citing this article
Tashev P., Alexiev N., Manolov V., Cherepanov A.N. Modifying the liquid phase with nanoscale powders in the process of welding and cladding // The Research of the Science City, 2017, vol. 1, no. 1, pp. 16-21.
This Article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).