The study of properties TiAl-Nb alloys

• Autorzy: Juřica J. , Losertová M. , Petlák D.
• Konferencja: Międzynarodowe Sympozjum Metody oceny struktury oraz własności materiałów i wyrobów (XXV ; 12-14.10.2010 ; Turawa, Polska)
• Języki publikacji: EN

Abstrakty

EN

Subject of this work is an intermetallic alloy based on TiAl and doped with Nb with high creep resistance and good mechanical properties. The experimental Ti-Al-Nb material with two compositions of Ti-45Al-10Nb and Ti-40Al-15Nb was prepared from master alloy TiNb (55/45 wt. %) and Al pieces by plasma melting, vacuum induction remelting and casting into the rod shape. The samples were homogenisation annealed at 1100°C for 12 hours in Ar atmosphere and water quenched from 700°C. Heat treatment at 700 °C for 8 hours in Ar atmosphere as well as in hydrogen flowing gas was realised to prepare experimental material for hydrogen effect study. Microstructure of the specimens was studied by light and scanning electron microscopies, microhardness measurement and phase microanalysis were performed. The lamellar microstructure of the samples in as-cast and heat treated conditions formed of the ? (45 at.% Al) and ?2 (41 at.% Al) phases resulted from metallographic observation and EDS phase analysis. Microhardness values of the samples decreased after annealing and quenching. Effect of hydrogen on lamellar microstructure and microhardness values was studied on the hydrogen-charged and hydrogen-free specimens. X-ray diffraction analyses were performed on Ti-Al-Nb specimens.

Słowa kluczowe

EN

alloy; titanum; niobum; Ti; Nb; Al; aluminium; component

PL

Ti; Nb; tytan; niob; stop; Al; glin; komponent

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Mechanika / Politechnika Opolska
• Rocznik: 2010
• Tom: z. 97
• Strony: 8--8
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Juřica J.

autor

Losertová M.

autor

Petlák D.

• VŠB-TU Ostrava, 17.listopadu 15, 708 33 Ostrava - Poruba, Czech Republic,

Bibliografia

• [1] Loria, E.A. Intermetallics. 2001, No. 9, pp. 997–1001.
• [2] F. Appel, R.Wagner, Intermetallics. 2000, No. 8, pp. 1283– 1291.
• [3] M. Hasegawa, H. Fukutomi: Materials Science and Engineering, A 508, 2009, pp.106–113.
• [4] K. Maruyama, R. Yamamoto, H. Nakakuki, N. Fujitsuna: Mater. Sci. Eng., A 239–240, 1997, pp. 419–428.
• [5] T.A. Parthasarathy, M. Keller, M.G. Mendiratta: Scripta Mater., 38, 1998, pp.1025–1031.
• [6] W.R. Chen, J. Triantafillou, J. Beddoes, L. Zhao: Intermetallics, 7, 1999, pp. 171–178.
• [7] Juřica J., Losertová M., Microstructure properties of TiAl-Nb alloy. Sborník ze semináře Development of materials science in research and education. STU Bratislava, 2009, 32-33s.