EFFECT OF STRUCTURAL CONDITION OF CHROMIUM ON OXIDATION RESISTANCE OF COMPOSITE POWDER BASED ON β2-FeAl REINFORCED WITH Al2O3 INCLUSIONS
Abstract
The results of studies of effect of structural state of chromium in the composite SHS-powder FeAl(Cr)/Al2O3 on its resistance to oxidation are presented. To study the possibility of alloying of mono-aluminide iron with chromium, the synthesis reaction mixture containing a source of chromium as chromium oxide powders or alloy PХ-30 were used. Powders were prepared by self-propagating mechanoactivated high-temperature synthesis (MASHS). Cyclic oxidation tests were conducted at a temperature of 700–1000°C in an air atmosphere for 2 hours. In the case of alloying the intermetallic alloy PX-30, the resultant powder exhibits a greater weight gain in contrast to powders prepared from a reaction mixture comprising a chromium oxide in which chromium is not only alloyed aluminide but is present in a free state.
About the Authors
A. I. Letsko
Powder Metallurgy Institute of the National Academy of Sciences of Belarus
Belarus
Belarus
T. L. Talako
Powder Metallurgy Institute of the National Academy of Sciences of Belarus
Belarus
Belarus
N. M. Parnitsky
Powder Metallurgy Institute of the National Academy of Sciences of Belarus
Belarus
Belarus
References
1. Stoloff, N. S. Iron aluminides: present status and future / N. S. Stoloff // Materials Science and Engineering. – 1998. – Vol. A 258. – P. 1–14.
2. Deformability recrystallization of Fe-Al intermetallic phase – base alloy / D. Kuc [et al.] // Journal of Achievements in Materials and Manufacturing Engineering. – 2007. – Vol. 20. – P. 143–146.
3. Kuc, D. The influence of deformation on the plasticity and structure of Fe3 Al–5Cr alloy / D. Kuc, G. Niewieski, I. Bednarczyk // Journal of Achievements in Materials and Manufacturing Engineering. – 2007. – Vol. 22/1. – P. 27–30.
4. Kang, B. S. J. Evaluation of fracture behaviour of iron aluminides / B. S. J. Kang, R. Cisloiu, // Theoretical and Applied Fracture, Mechanics. – 2006. – Vol. 45. – P. 25–40.
5. Sikka, V. K. Oxidation and Corrosion of Intermetallic Alloys / V. K. Sikka, G. Welsch, P. D. Desai // Metal Information Analysis Centre. – West Lafayette, Indiana, 1996.
6. Stott, F. H. Oxidation-sulphidation of iron aluminides / F. H. Stott, H. J. Grabke, M. Schutze // Oxidation of Intermetallics. – Wiley-VCH, Weinheim, 1997.
7. High temperature corrosion behaviour of iron aluminides and iron aluminium-chromium alloys / J. Klower [et al.] // Oxidation of intermetallics. – Wiley-VCH, Weinheim, 1997.
8. Morris, D. G. Development of high strength, high ductility and high creep resistant iron aluminide / D. G. Morris, M. A. Muñoz-Morris, J. Chao // Intermetallics. – 2004. – Vol.12. – P. 82–826.
9. Elevated Temperature Coatings / P. F. Tortorelli [et al.]. – Science and Technology, TMS, Warrendale, PA, 1995.
10. Pint, B. A. Oxidation of Intermetallics / B. A. Pint, P. F. Tortorelli, I. G. Wright. - Wiley, New York, 1996.
11. Subramanian, R. Iron-aluminide-Al2 O3 composites by in situ displacement reactions: processing and mechanical properties / R. Subramanian // Mater. Sci. Eng. A. – 1998. - Vol. 254. – P. 119–128.
12. High temperature corrosion of B2 iron aluminides / A. Mignone [et al.] // Corros. Sci. – 1998. – Vol. 40. – P. 1331.
13. Grabke, H. J. Oxidation of NiAl and FeAl. Intermetallics / H. J. Grabke // Intermetallics. – 1999. – Vol. 7.
14. Grabke, H. J. Oxidation of Intermetallics / H. J. Grabke, M. Schütze. – Wiley, New York, 2007.
15. Tortorelli, P. F. Compositional Influences of the High Temperature Corrosion Resistance of Iron Aluminides, in Processing, Properties, and Applications of Iron Aluminides / P. F. Tortorelli, J. H. DeVan. – The Minerals, Metals and Materials Society, Warrendale, PA, 1994.
16. DeVan, J. H. Oxidation Behaviour of Fe3 Al and Derived Alloys, Oxidation of High Temperature Intermetallics / J. H. DeVan. – TMS, Warrendale, 1989.
17. Halfa, H. Oxidation Behavior of Fe3 Al-5Cr- (0, 0.5, 1.5) Ti Alloys at Temperature Ranges from 800 °C to 1200 °C / H. Halfa // Journal of Minerals and Materials Characterization and Engineering. – 2010. – Vol. 9. – P. 775–786.
18. Киселева, Т. Ю. Перераспределение атомов хрома между компонентами нанокомпозита интерметаллид/оксид в процессе его получения / Т. Ю. Киселева [и др.] // Вестн. МГУ. Сер. 3. «Физика, астрономия». – 2008. – № 4.
19. Особенности самораспространяющегося высокотемпературного синтеза нанокомпозиционных порошков интерметаллид/оксид с использованием механокомпозитов-прекурсоров / Т. Л. Талако [и др.] // Физика горения и взрыва. – 2009. – № 5.
20. Hindam, H. M. Microstructure of α-Al2 O3 on Ni–Al Alloys: Internal Precipitation and Transition to External Scale / H. M. Hindam, W. W. Smeltzer // J. Electrochem. Soc. – 1980. – Vol. 127 – P. 1622–1630.
21. Doychak, J. Oxidation of High Temperature Intermetallics / J. Doychak, J. L. Smialek, C. A. Barrett // The Minerals, Metals and Materials Society. – Warrendale, PA, 1989.
22. Smialek, J. L. Oxidation Behavior of FeAl + Hf, Zr, B / J. L. Smialek, J. Doychak, D. J. Gaydosh // Oxidation of Metals – 1990. – Vol. 34. – P. 259–27.
23. Zhenyu, Liu Effects of Chromium on the Oxidation Performance of b-FeAlCr Coatings / Liu Zhenyu, Wei Gao // Oxidation of Metals. – 2000. –Vol. 54. – P. 189–209.
24. Doychak, J. Transient Oxidation of Single-Crystal NiA1 / J. Doychak, J. L. Smialek, T. E. Mitchell // Metall. Trans. – 1989. – Vol. 20A.
25. Doychak, J. TEM Studies of Oxidized NiAl and Ni3 Al Cross Sections / J. Doychak, M. Rühle // Oxid. Met. – 1989. – Vol. 31.
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