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Microstructure of borides in titanium and titanium aluminides
Proceedings, annual meeting, Electron Microscopy Society of America, 1990The high strength-to-weight ratios and high elevated-temperature strength of dispersion strengthened titanium and titanium aluminides make them attractive materials for aerospace applications. A fine dispersion of hard particles is introduced into these alloys to increase their strength through an Orowan hardening mechanism.
Daniel S. Schwartz, S. M. L. Sastry
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Isothermal deformation of gamma titanium aluminide
Scripta Materialia, 1996Gamma titanium aluminide has received considerable attention in recent years from the automotive industry as a potential material for making rotating and reciprocating components to produce a quieter and more efficient engine. The objectives of this study were to identify processing routes for the manufacture of automobile valves from gamma titanium ...
Singh, J. P. +3 more
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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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Oxidation subscale of γ-titanium aluminide
Acta Materialia, 1996The subscale formed during high temperature rapid oxidation of gamma-titanium aluminum is revealed by transmission electron microscopy and microanalysis to consist of two phases: one hexagonal with unit cell dimensions a = 0.58 nm, c = 0.47 nm (+/- 0.005 nm), and a composition close to Ti6Al3O4; the other simple cubic with a = 0.69 nm (+/-0.005 nm) and
Beye, R. +3 more
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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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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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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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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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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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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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