Results 181 to 190 of about 6,333 (215)
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Materials & Design, 1992
Abstract A continuing need exists within the aerospace industry for improved materials and processing technologies. Titanium aluminides, with high specific strength and stiffness, are among the most promising candidates. Properties and processing options are discussed.
J.A. Peters, M. Blank-Bewersdorff
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Abstract A continuing need exists within the aerospace industry for improved materials and processing technologies. Titanium aluminides, with high specific strength and stiffness, are among the most promising candidates. Properties and processing options are discussed.
J.A. Peters, M. Blank-Bewersdorff
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Transition-metal aluminide formation: Ti, V, Fe, and Ni aluminides
Physical Review B, 1998The heats of formation for binary and ternary 3d transition-metal (Ti, V, Fe, and Ni) aluminides are calculated from first principles within the local density approximation. The calculated heats for Ti and Ni aluminides are typically within {approximately}0.02 eV/atom of the experimental values, while the Fe aluminides heats appear to be overestimated ...
R. E. Watson, M. Weinert
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The formation of aluminides in intermetallic nickel aluminide-based nanocomposites
Journal of Alloys and Compounds, 2005Abstract Metal matrix composites based on the intermetallic alloy Ni 3 Al and alumina were fabricated using powder metallurgy technique. Nanosize alumina as dispersed phase was mixed with Ni and Al powder in a planetary ball mill for 4 h at 350 rpm to achieve a small mechanical alloying effect.
R. Ismail, I.I. Yaacob
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Materials Science and Engineering: A, 1998
A processing route comprising of air induction melting (AIM) with protective cover and electroslag remelting (ESR) for production of iron aluminide $(Fe_3Al)$ alloys has been developed. The use of protective cover during AIM results in the minimization of hydrogen gas porosity and a significant reduction in the impurity levels (S, O and N).
R.S. Sundar +3 more
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A processing route comprising of air induction melting (AIM) with protective cover and electroslag remelting (ESR) for production of iron aluminide $(Fe_3Al)$ alloys has been developed. The use of protective cover during AIM results in the minimization of hydrogen gas porosity and a significant reduction in the impurity levels (S, O and N).
R.S. Sundar +3 more
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JOM, 1995
The first international symposium on gamma titanium aluminides (ISGTA) was held in conjunction with the TMS `95 Annual Meeting, 13--16 February 1995, Las Vegas, under the sponsorship of the TMS Structural Materials Division--Titanium Committee. The selected papers cover almost the entire aspects of the current gamma technology such as fundamentals ...
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The first international symposium on gamma titanium aluminides (ISGTA) was held in conjunction with the TMS `95 Annual Meeting, 13--16 February 1995, Las Vegas, under the sponsorship of the TMS Structural Materials Division--Titanium Committee. The selected papers cover almost the entire aspects of the current gamma technology such as fundamentals ...
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Intermetallics, 2005
Abstract A range of mechanical properties for wrought TNB alloy (Ti–45Al–8Nb–0.2C%) and cast Ti4522XD(Ti–45Al–2Nb–2Mn–XD) have been assessed. The influence of notch sensitivity on fatigue strength has been evaluated and compared in terms of different microstructure and alloy composition.
Wayne E. Voice +3 more
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Abstract A range of mechanical properties for wrought TNB alloy (Ti–45Al–8Nb–0.2C%) and cast Ti4522XD(Ti–45Al–2Nb–2Mn–XD) have been assessed. The influence of notch sensitivity on fatigue strength has been evaluated and compared in terms of different microstructure and alloy composition.
Wayne E. Voice +3 more
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Materials & Design, 1991
Abstract Trials at TWI have demonstrated means of joining titanium aluminides, materials which are arousing considerable interest in the aerospace industry for use in gas-turbine engines and in high-performance military airframes.
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Abstract Trials at TWI have demonstrated means of joining titanium aluminides, materials which are arousing considerable interest in the aerospace industry for use in gas-turbine engines and in high-performance military airframes.
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Journal of Phase Equilibria and Diffusion, 2017
Iron aluminides form an interesting class of materials which combine excellent corrosion and oxidation resistance with good mechanical properties at moderate to high temperature (up to 500 °C). These materials, however, suffer from low room-temperature ductility (under 5% elongation in tension), which is mostly due to environmental effects.
Bruna N. Ramirez, Cláudio G. Schön
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Iron aluminides form an interesting class of materials which combine excellent corrosion and oxidation resistance with good mechanical properties at moderate to high temperature (up to 500 °C). These materials, however, suffer from low room-temperature ductility (under 5% elongation in tension), which is mostly due to environmental effects.
Bruna N. Ramirez, Cláudio G. Schön
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Materials Science Forum, 1997
L'oxydation de NiAl, FeAl, et TiAl ainsi que celle d'alliages de composes intermetalliques ont ete largement etudiees dans les dernieres annees. A haute temperature, on observe la formation selective de AlO 3 dans NiAl et FeAl, tandis qu'a plus basse temperature, on trouve des modifications metastables.
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L'oxydation de NiAl, FeAl, et TiAl ainsi que celle d'alliages de composes intermetalliques ont ete largement etudiees dans les dernieres annees. A haute temperature, on observe la formation selective de AlO 3 dans NiAl et FeAl, tandis qu'a plus basse temperature, on trouve des modifications metastables.
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1996
Intermetallic compounds of nickel, iron, and titanium with aluminum have been studied extensively. Research on these materials has been published in the proceedings of several symposia and in journal articles. Detailed articles describing the development of nickel aluminides (Liu 1994; Noebe, Bowman, and Nathal 1994), iron aluminides (McKamey 1994 ...
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Intermetallic compounds of nickel, iron, and titanium with aluminum have been studied extensively. Research on these materials has been published in the proceedings of several symposia and in journal articles. Detailed articles describing the development of nickel aluminides (Liu 1994; Noebe, Bowman, and Nathal 1994), iron aluminides (McKamey 1994 ...
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