Results 1 to 10 of about 3,427 (205)

Mechanical Properties of TiAl and TiAl-Base Alloys

1996
Titanium forms three intermetallic compounds with aluminum. They are Ti3AI, TiAl and Al3Ti with crystal structures of the DO19, L10 and D022 types, respectively. They are superlattice structures based on geometrically close-packed h.c.p. and f.c.c. structures.
Kyosuke Kishida, Shigenobu Yokoshima, David R. Johnson, Haruyuki Inui, Masaharu Yamaguchi   +4 more
openaire   +1 more source

Solidification of TiAl-based alloys

MRS Proceedings, 2008
AbstractTitanium aluminides containing high niobium additions emerged as an attractive alloy family for automotive and aero-engine applications. Their processing by near net shape casting is rather demanding, not only due to easy contamination but also due to the fact that microstructure formation during solidification and subsequent solid state ...
Ulrike Hecht, D. Daloz, J. Lapin, A. Drevermann, V.T. Witusiewicz, J. Zollinger   +5 more
openaire   +1 more source

Superconductivity of α-TiAl alloys

Physica C: Superconductivity, 2000
Abstract The superconducting transition temperature Tc of α TiAl alloys has been measured up to 10 atomic percentage of Al. Tc monotonously increases with a tendency to saturation for high Al content.
Liu Shumei, Jing Xiunian, Lu Li, Li Shanlin, J.J. Lin, Zhang Dian-lin   +5 more
openaire   +1 more source

Improving the oxidation resistance of TiAl-alloys with fluorine

Journal of Alloys and Compounds, 2008
Abstract The technical TiAl-alloy γ-MET (Ti–46.5Al–4(Cr, Nb, Ta, B)) was oxidised thermocyclically (24 h-cycle-test) at 900 °C in wet and dry air. In this paper results of untreated and fluorine treated TiAl-samples are presented. Their oxidation behaviour will be shown. Several methods were used to apply the halogens to the surface, e.g.
Donchev, A., Richter, E., Schuetze, M., Yankow, R. A.   +3 more
openaire   +3 more sources

Alloying mechanism of beta stabilizers in a TiAl alloy

Metallurgical and Materials Transactions A, 2001
The effects of beta stabilizers such as Fe, Cr, V, and Nb on the microstructures and phase constituents of Ti52Al48-xM (x=0, 1.0, 2.0, 4.0, or 6.0 at. pct and M=Fe, Cr, V, and Nb) alloys were studied. The dependence of the tensile properties and creep resistance of TiAl on the alloying elements, especially the formation of B2 phase, was investigated ...
Fu-Sheng Sun, Chun-Xiao Cao, Ming-Gao Yan, Seung-Eon Kim, null Yong-Tailee   +4 more
openaire   +1 more source

Forming of γ-TiAl-Alloys

MRS Proceedings, 1992
The forging and rolling behavior of binary Ti-48Al and ternary Ti-48Al-2Cr (at-%) on laboratory and industrial scale is investigated. Arc-melted and cast ingots are used for forging operations. In order to enable the determination of optimized forging and rolling conditions the plastic flow behavior was examined for low ( −2 s −1 ) and high (1 s −1 ...
K. Wurzwallner, H. Clemens, P. Schretter, A. Bartels, C. Koeppe   +4 more
openaire   +1 more source

Alloy and process development of TiAl

Journal of Materials Science, 2004
The development of cast TiAl-based components for the automotive industry and the possibility of wrought components for applications in gas turbines are clear indications that these alloys are maturing as materials for engineering components. There are however problems in the cost of manufacture and in the properties of these alloys.
Xinhua Wu, D. Hu, M. H. Loretto
openaire   +1 more source

Itinerant antiferromagnetism of TiAl alloys

Journal of Magnetism and Magnetic Materials, 1986
Abstract Magnetic susceptibility measurements of TiAl alloys are reported. Aluminium, by alloying, acts on the Neel temperature of pure titanium giving rise to a complicated phase diagram. A theoretical model, based on the itinerant antiferromagnetism model of chromium is proposed in order to explain the magnetic phase diagram of TiAl alloys.
T. Petrişor, I. Pop, A. Giurgiu, N. Farbaş   +3 more
openaire   +1 more source

Dynamic Recrystallization in Tial Alloys

MRS Proceedings, 1992
TiAl alloys with Cr, V, and Nb additions show promise as high temperature materials due to their high temperature strength and modulus. Dynamic recrystallization has been shown to be important for the processing and superplastic forming of these materials.
D.S. Lee, D.M. Dimiduk, S. Krishnamurthy
openaire   +1 more source

Strength and ductility in TiAl alloys

Intermetallics, 1998
Abstract Tensile behavior of two-phase TiAl alloys at room temperature (RT) is analyzed for duplex and lamellar microstructural forms. The Hall-Petch relationship with high constants in fully-lamellar material is explained as a combined function of grain-size and deformation-anisotropy.
openaire   +1 more source