Results 141 to 150 of about 401 (186)
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Grinding titanium aluminide: subsurface damage
International Journal of Manufacturing Technology and Management, 2007This paper presents a study on subsurface damage induced during the surface grinding of titanium aluminide. As grinding occurs, workpiece temperatures rise at the interface between the grinding wheel and the workpiece. Three material properties ?thermal diffusivity, thermal conductivity and Vickers hardness ?are presented as functions of temperature ...
Wes Stone, Thomas R. Kurfess
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Materials Science and Engineering: A, 1992
Abstract Importance of creep properties in evaluating heat resistant characteristics of intermetallics is first demonstrated. Compressive creep behavior of single-phase γ-TiAl polycrystals (50–53.4 mol.% Al, 20–200 μm) at 1000–1200 K under 100–400 MPa is summarized. Creep behavior can be classified into two types, and minimum creep rates are shown as
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Abstract Importance of creep properties in evaluating heat resistant characteristics of intermetallics is first demonstrated. Compressive creep behavior of single-phase γ-TiAl polycrystals (50–53.4 mol.% Al, 20–200 μm) at 1000–1200 K under 100–400 MPa is summarized. Creep behavior can be classified into two types, and minimum creep rates are shown as
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Titanium Aluminides - An Overview
MRS Proceedings, 1984The object of this paper is to describe a coordinated research and development program which has been pursued by an Air Force-Industry-University team for more than twelve years. The focus of our attention has been on the development, processing, and engine testing of alloys based on intermetallic compounds, specifically on the aluminides of titanium ...
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Machinability of titanium aluminides: A review
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, 2018Titanium aluminides are used in the aeronautical and automotive field as an alternative material to manufacture critical components exposed to high temperatures and corrosive environments. These alloys due to its intermetallic structure exhibit some special properties such as low density, high strength, high stiffness, corrosion resistance, and creep ...
SD Castellanos +4 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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The effects of hydrogen on titanium aluminides
JOM, 1991Advanced aerospace systems such as the national aerospace plane are slated to use hydrogen as a fuel. Thus, caution must be exercised in the use of materials which can exhibit degradation in mechanical properties on exposure to hydrogen. Although recent work shows that hydrogen has adverse effects on titanium aluminides, it can also be used to advan ...
D. Eliezer +2 more
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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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Twin toughening in titanium aluminide
Acta Metallurgica et Materialia, 1991Abstract The mechanical behavior of a γ-TiAl that exhibits mechanical twinning has been investigated. This material has been shown to have a relatively high toughness compared with that of other γ-TiAl materials, which do not twin. The tough material forms a wide twin process zone upon crack propagation.
H.E. Dève, A.G. Evans
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Titanium Aluminide Intermetallics
2012Abstract Titanium aluminides are lightweight materials that have relatively high melting points and good high-temperature strength. They also tend to be stronger and lighter than conventional titanium alloys, but considerably less ductile.
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