Results 251 to 260 of about 347,004 (298)
Some of the next articles are maybe not open access.
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 +7 more
openaire +1 more source
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 +7 more
openaire +1 more source
Strength and ductility in TiAl alloys
Intermetallics, 1998Abstract 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
Dynamic Recrystallization in Tial Alloys
MRS Proceedings, 1992TiAl 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, 2005Abstract 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
Advanced Intermetallic TiAl Alloys
Materials Science Forum, 2016Challenging issues concerning energy efficiency and environmental politics require novel approaches to materials design. A recent example with regard to structural materials is the emergence of lightweight intermetallic TiAl alloys. Their excellent high-temperature mechanical properties, low density, and high stiffness constitute a profile perfectly ...
Helmut Clemens, Svea Mayer
openaire +1 more source
Alloy and process development of TiAl
Journal of Materials Science, 2004The 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
Isothermal oxidation of TiAl alloy
Metallurgical and Materials Transactions A, 2001Isothermal oxidation behavior of Ti-48.6 at. pct Al alloy was studied in pure dry oxygen over the temperature range 850 °C to 1000 °C. The oxidation was essentially parabolic at all temperatures with significant increase in the rate at 1000 °C. Effective activation energy of 404 kJ/mol was deduced. The oxidation products were a mixture of TiO2 (rutile)
R. G. Reddy, X. Wen, M. Divakar
openaire +1 more source
TiAl formation by mechanical alloying
Materials Science and Engineering: A, 1992Abstract Formation of equiatomic TiAl has been achieved through mechanical alloying of powders of two brittle compounds Al 3 Ti and TiH 2 . The influence of milling time, compaction of the powder by hot isostatic pressing, and elevated temperature exposure on the species and proportion of phases formed has been determined.
C Suryanarayana, R Sundaresan, F.H Froes
openaire +1 more source
Twinned Dendrites in Tial Alloys
Materials Characterization, 2023Fu qiang Zhang +7 more
openaire +2 more sources
Itinerant antiferromagnetism of TiAl alloys
Journal of Magnetism and Magnetic Materials, 1986Abstract 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 +3 more
openaire +1 more source