Results 211 to 220 of about 1,330 (265)

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

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

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

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

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

Fatigue properties of TiAl alloys

Intermetallics, 2005
Abstract The fatigue properties of TiAl alloys, namely fatigue life, cyclic stress–strain behaviour and fatigue crack growth resistance are reviewed in the present paper. The influence of different parameters (microstructure, defects, temperature and environment) on these properties is examined. Finally, some considerations on the fatigue reliability
Gilbert Hénaff, Anne-Lise Gloanec
openaire   +1 more source

Dislocation dissociation in TiAl alloys

Materials Science and Engineering: A, 1997
Two superdislocation configurations consisting in an asymmetric planar dissociation on one octahedral plane, and symmetric wedge shape dissociation on two inclined octahedral planes are analysed using anisotropic elasticity. The presented results can be used to evaluated the stacking fault energies from the measured widths of dissociation.
V. Paidar, H. Inui, K. Kishida, M. Yamaguchi   +3 more
openaire   +1 more source

TiAl-based alloys with nickel

Intermetallics, 1996
Abstract The alloying potential of nickel as a minor constituent has been investigated in TiAl-based intermetallics with respect to its constitutional ability to provide the necessary microstructures for higher ductility and low fracture toughness. Six alloys (Ti0.60Al0.40)1 − x1Nix1 and (Ti0.56Al0.44)1 − x2Nix2 with x1.2 = 0.01, 0.02 and 0.05 have ...
Josef Bauer, Peter Rogl, André Perrin, Marcel Bohn, Walter Wolf, Raimund Podloucky, Yannick LeFriec, David Antoine   +7 more
openaire   +1 more source