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METAL PROCESSING
ArticleName Comparison of physical methods of on-line inspection of chemical composition and microstructure of aluminum Al – Mn – Cu alloys
DOI 10.17580/tsm.2015.10.08
ArticleAuthor Udalaya K. R., Belenkiy A. M., Korotkova N. O., Deev V. B.
ArticleAuthorData

National University of Science and Technology “MISiS”, Moscow, Russia:

K. R. Udalaya, Applicant for the Degree of Candidate of Science, Chair of Thermal Physics and Ecology of Metallurgical Production, e-mail: kbulgakova2012@gmail.com
A. M. Belenkiy, Professor, Chair of Thermal Physics and Ecology of Metallurgical Production, e-mail: energomet@misis.ru
N. O. Korotkova, Post-Graduate Student of a Chair of Casting Technologies
V. B. Deev, Professor, Casting Process Technology Chair, Chief Researcher of Engineering Center “Casting Technologies and Materials”

Abstract

The physical properties of aluminum Al – Mn – Cu alloys were discovered for the comparison of on-line inspection methods of chemical composition and microstructure. Measurement methods were used to determine the hardness, electrical resistivity and thermoelectric power of the samples. The investigated samples are three-component Al – Mn – Cu alloys with the same content of Mn (about 1%) and changing content of copper from 0 to 7% by weight. Heat treatment of the samples involved annealing and tempering at the temperature range of 150–540 °C. Physical properties were measured after every tempering. It is shown that the methods of the thermoelectric power, electrical resistivity and hardness are sensitive to copper content, as well as to the formation of new phases with the presence of copper, and depend on annealing temperature. Thermoelectric power method is more sensitive to formation of new phases at minimal concentrations of copper (up to 0.5% (wt.)) than the electrical resistivity method.
This work was carried out within the Agreement No. 14.578.21.0004 (unique identifier of the project is RFMEFI57814X0004) about the subsidization of Ministry of Education and Science of Russian Federation within the realization of the Federal Target Program “Research and development of the priority ways of development of science-technical complex of Russia for 2014–1020”.

keywords Thermoelectric power, hardness, electrical resistivity, aluminum alloys, Al – Mn – Cu, control of chemical composition, microstructure
References

1. Dmitrieva E. E., Shelkovyy E. A., Dmitrieva A. S. Kontrolnye pribory dlya liteynogo i metallurgicheskogo proizvodstv (Control devices for casting and metallurgical productions). V nauchno-prakticheskaya konferentsiya “Energosberegayushchie tekhnologii v promyshlennosti. Pechnye agregaty. Ekologiya. Bezopasnost tekhnologicheskikh protsessov” : sbornik trudov (The V scientific-practical conference “Energy-saving technologies in industry. Furnace aggregates. Ecology. Safety of technological processes” : collection of proceedings). Moscow : MISiS, 2010. pp. 78–81.
2. Eskin D. G., Massardier V., Merle P. A study of high-temperature precipitation in Al – Mg – Si alloys with an excess of silicon. Journal of material science. 1999. Vol. 34. pp. 811–820.
3. Luiggi N. J. Isothermal precipitation of commercial 3003 Al Alloys studied by thermoelectric power. Metallurgical and materials transactions A. 1997. Vol. 28B, February. pp. 125–133.
4. Luiggi N.J. Characterization by Thermoelectric Power of a Commercial Aluminum-Iron-Silicon Alloy (8011) during Isothermal precipitation. Metallurgical and materials transactions A. 1998. Vol. 29A, November. pp. 2669–2667.
5. Abdala M. R. W. S., Garcia de Blas J. C., Barbosa C., Acselrad O. Thermoelectrical power analysis of precipitation in 6013 aluminum alloy. Materials characterization. 2008. Vol. 59. pp. 271–277.
6. Massardier V., Epicier T., Merle P. Correlation between the microstructural evolution of a 6061 aluminium alloy and the evolution of its thermoelectric power. Acta materialia. 2000. Vol. 48. pp. 2911–2924.
7. Luiggi N. J., Valera M., Rodriguez J. P., Prin J. Experimental study of the interaction between recrystallization and precipitation processes of an AA8011 commercial alloy. Journal of metallurgy. 2014. Vol. 2014. pp. 1–17.
8. Sun D., Sun X.-C., Northwood D. O., Sokolowski J. H. Thermoelectric Power Characterization of a 2024 Aluminum Alloy During Solution Treatment and Aging. Materials characterization. 1996. Vol. 36. pp. 83–92.
9. Gaffar M. A., Gaber A., Mostafa M. S., Abo Zeid E. F. The effect of Cu addition on the thermoelectric power and electrical resistivity of Al – Mg – Si balanced alloy: A correlation study. Materials Science and Engineering A. 2007. Vol. 465. pp. 274–282.
10. Rana R., Massardier V., Singh S. B., Mohandy O. N. Effect of the pretreatment on copper-alloyed interstitial free steel studied by thermoelectric power measurement. Metallurgical and materials transactions A. 2013. Vol. 44, iss. 6. pp. 186–200.
11. Rana R., Liu C. Thermoelectric power in low-density interstitial free iron-aluminum alloys. Philosophical magazine letters. 2013. Vol. 93, iss. 9. pp. 502–511.
12. Bourassa R. R., Lazarus D., Blackburn D. A. Effect of High Pressure on the Thermoelectric Power and Electrical Resistance of Aluminum and Gold. Physical review. 1968. Vol. 165, Nо. 3, January. pp. 853–864.
13. Garland J. C., Van Harlingen D. J. Low-temperature electrical and thermal transport properties of pure aluminium. Journal of Physics F: Metal Physics. 1978. Vol. 8, No. 1. pp. 117–124.
14. Huebener R. P. Thermoelectric Power of Aluminum and Dilute Aluminum Alloys. Physical review. 1968. Vol. 171, Nо. 3, July. pp. 634–641.
15. Belov N. A., Alabin A. N., Matveeva I. A. Optimization of phase composition of Al – Cu – Mn – Zr – Sc alloys for rolled products without requirement for solution treatment and quenching. Journal of alloys and compounds. 2014. Vol. 583. pp. 206–213.
16. Lukhvich A. A., Karolik A. S., Sharando V. I. Strukturnaya zavisimost termoelektricheskikh svoystv i nerazrushayushchiy kontrol (Structure dependance of thermal electric properties and nondestructive control). Minsk : Navuka i tekhnika, 1990. 192 p.
17. GOST R 8.585–2001. Gosudarstvennaya sistema obespecheniya edinstva izmereniy. TERMOPARY. Nominalnye staticheskie kharakteristiki preobrazovaniya (State Standard R 8.585–2001. State system for ensuring the uniformity of measurements. Thermocouples. Nominal static characteristics of conversion). Introduced: October 21, 2001. (in Russian).
18. Mondolfo L. F. Struktura i svoystva splavov (Structure and properties of alloys). Translated from English. Moscow : Metallurgiya, 1979. 640 p.
19. Pelletier J. M., Vigier G., Merlin J., Merle P., Fouquet F., Borelly R. Precipitation effects on thermoelectric power in Al – Cu alloy. Acta Metallurgica. 1984. Vol. 32. pp. 1069–1078.

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