Avtomaticheskaya Svarka (Automatic Welding), #2, 2020, pp.18-23
Calculated evauation of application of nano-sized particles in modifying the cast structure of weld metal
V.M. Korzhik1, V.O. Shcheretskii1, A.A. Chaika1, Yi Jianglong2
E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.
Guangdong Institute of Welding (China-Ukraine E.O. Paton Institute of Welding).
363 Chiansin Str., 510650, Guangzhou, Tianhe, China. E-mail: email@example.com
The work deals with the features of application of promising nanosized particles of TiC, WC, TiB2
for modifying the weld microstructure in aluminium alloy welding. Evaluation of their applicability was performed from the viewpoint of thermodynamic stability in the melts of commercial weldable alloys, which contain: Cu, Fe, Zn, Mn, and Ti. It is shown that despite the relative instability, nanosized TiC particles can be used with success as modifiers of aluminium alloys of Al-Mg system. Here, the presence of silicon limits the titanium carbide resistance in the aluminium melt and, therefore, is undesirable, whereas titanium, contrarily, improves the stability of TiC particles. WC particles can be used with success for modifying the structure of alloys of Al-Si system, the presence of silicon increasing their stability in the melt. Particles of titanium diboride TiB2
are the most stable compound of the studied ones. Its small modifying effect on aluminium alloys is compensated by its stability in aluminium melts at overheating. 16 Ref., 1 Tabl., 5 Fig.
Keywords: automatic welding of aluminium, nanosized particles, modifying, thermodynamics, filler materials
1. Zadiranov, A.N., Kats, A.M. (2008) Theoretical principles of solidification of metals and alloys. Moscow. RUDN [in Russian].
2. Lekatou A., Karantzalis A.E., Evangelou A. et al. (2015) Aluminium reinforced by WC and TiC nanoparticles (ex-situ) and aluminide particles (in-situ). J. Materials & Design, 65, 1121-1135. https://doi.org/10.1016/j.matdes.2014.08.040
3. Borodianskiy K., M. Zinigrad. (2016) Modification Performance of WC Nanoparticles in Aluminum and an Al-Si Casting Alloy. Metallurgical and Materials Transactions B, 47, 1302-1308. https://doi.org/10.1007/s11663-016-0586-0
4. Banerji A., Reif W. (1986) Development of Al-Ti-C Grain Refiners Containing TiC. Metallurgical and Materials Transactions A, 17A, 2127-2137. https://doi.org/10.1007/BF02645911
5. Cibula A. (1949/1950) The Mechanism of Grain Refinement of Sand Casting in Aluminum Alloys. J. of the Institute of Metals, 76, 321-360.
6. McCartney D.G. (1989) Grain Refining of Aluminum and Its Alloys Using Inoculants. International Materials Reviews., 34(5), 247-260. https://doi.org/10.1179/imr.19188.8.131.52
7. Jones G.P., Pearson J. (1976) Factors affecting the grain refinement of aluminum using titanium and boron additives. Metallurgical Transactions B, 7(2), 223-234. https://doi.org/10.1007/BF02654921
8. Peng Yu, Zhi Mei S.C. (2005) Materials Chemistry and Physics, 93, 109-116. https://doi.org/10.1016/j.matchemphys.2005.02.028
9. Greer A.L., Cooper P.S., Meredith M.W. et al.( 2003) Tronche Grain Refinement of Aluminium Alloys by Inoculation. Advanced Engineering Materials, 5, 81-91. https://doi.org/10.1002/adem.200390013
10. In-Hyuck Song, Do Kyung Kim, Yoo-Dong Hahn, Hai-Doo Kim. (2004) Materials Letters, 58, 593-597. https://doi.org/10.1016/S0167-577X(03)00576-7
11. Viala J.C., Peillon N., Bosselet F., Bouix J. (1997) Materials Science and Engineering, A 229, 95-113. https://doi.org/10.1016/S0921-5093(97)00002-6
12. Bouix J., Berthet M.P., Bosselet F. (2001) Composites Science and Technology, 61, 355-362. https://doi.org/10.1016/S0266-3538(00)00107-X
13. Shcheretsky, A.A., Shcheretsky, V.A. (2006) Protsessy Litia, 3, 18-214 [in Russian].
14. Dinsdale A.T. (1991) SGTE data for pure elements. Calphad, 15, 317-425. https://doi.org/10.1016/0364-5916(91)90030-N
15. Witusiewicz V.T., Hallstedt B., Bondar A.A. et al. (2015) Thermodynamic description of the Al-C-Ti system. J. of Alloys and Compounds, 623, 480-496. https://doi.org/10.1016/j.jallcom.2014.10.119
16. Kaufman, L., Bernstein Kh. (1972) Computer calculation of phase diagrams. Moscow, Mir [in Russian].