Results 171 to 180 of about 1,266 (220)
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Advanced grinding of titanium aluminides
International Journal of Manufacturing Technology and Management, 2007In aerospace industry, titanium alloys are used for turbine components. The material properties and the specific grinding kinematics enhance the risk of thermally damaging these components. Speed stroke grinding represents an alternative to common grinding strategies while reducing machining time and production cost but simultaneously enhancing the ...
Fritz Klocke +2 more
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Nanostructured titanium aluminides
Materials Science and Engineering: A, 1994Abstract Binary TiAl and ternary TiAlNb alloys were mechanically alloyed in a Szegvari attritor or in a SPEX mill, to produce an amorphous phase and a B2/b.c.c. phase respectively. Consolidation of these powders by hot pressing, explosive compaction or hot isostatic pressing resulted in transformation of the as-milled phases; however, the product ...
C. Suryanarayana, F.H. Froes
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Nanocrystalline titanium aluminide
Acta Metallurgica et Materialia, 1994TiAl has potential of being a strong, light-weight structural material. Nanocrystalline TiAl samples were synthesized by sputtering, particle condensation in inert gas and high-pressure compaction of the powder. Structure and chemical composition of individual grains were investigated by X-ray diffraction, conventional transmission electron microscopy,
S.Q. Xiao +4 more
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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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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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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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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 ...
exaly +2 more sources
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 ...
exaly +2 more sources
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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