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titanium aluminides
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in Ordered Intermetallics
> Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
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Published: 01 December 1998
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Published: 01 January 2005
Fig. 31 Micrographs. Orthorhombic titanium aluminide that failed in tension by flow localization. Source: Ref 10 . (b) Near-γ titanium aluminide that failed in tension by fracture (cavitation). Source: Ref 51
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Published: 01 January 1996
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Published: 01 January 1996
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Published: 01 January 1993
Fig. 25 Heat-resistant supporting plate of hot-pressed titanium aluminide (TiAl) alloy Ti-31Al-5Nb-1.6Cr brazed in vacuum by sintered foil BTi-3 at 1120 °C (2050 °F). Photograph courtesy of Vladimir Moxson and Vladimir Duz, ADMA Products, Inc.
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in Modeling and Simulation of Cavitation during Hot Working
> Fundamentals of Modeling for Metals Processing
Published: 01 December 2009
Fig. 21 Micrographs of (a) an orthorhombic titanium aluminide alloy that failed in tension by flow localization (Source: Ref 63 ) and (b) a near-gamma titanium aluminide alloy that failed in tension by fracture (cavitation) (Source: Ref 64 )
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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004001
EISBN: 978-1-62708-185-6
... Abstract This article reviews the bulk deformation processes for various aluminide and silicide intermetallic alloys with emphasis on the gamma titanium aluminide alloys. It summarizes the understanding of microstructure evolution and fracture behavior during thermomechanical processing...
Abstract
This article reviews the bulk deformation processes for various aluminide and silicide intermetallic alloys with emphasis on the gamma titanium aluminide alloys. It summarizes the understanding of microstructure evolution and fracture behavior during thermomechanical processing of the gamma aluminides with particular reference to production scaleable techniques, including vacuum arc and cold-hearth melting, isothermal forging, conventional hot forging, and extrusion. The selection and design of manufacturing methods, in the context of processing-cost trade-offs for gamma titanium aluminide alloys, are also discussed.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003164
EISBN: 978-1-62708-199-3
... (Ni3Al and NiAl), iron aluminides (Fe3Al and FeAl) and titanium aluminides (alpha-2 alloys, orthorhombic alloys, and gamma alloys). alloying effects corrosion resistance crystallographic data fabrication iron aluminides mechanical properties nickel aluminides processing of aluminides...
Abstract
Alloys based on ordered intermetallic compounds constitute a unique class of metallic material that form long-range ordered crystal structures below a critical temperature. Aluminides, a unique class of ordered intermetallic materials, possesses many attributes like low densities, high melting points, and good high-temperature strength that make them an attractive material for high-temperature structural application. This article discusses the properties, chemical composition, corrosion resistance, processing, fabrication, alloying effects and crystallographic data of nickel aluminides (Ni3Al and NiAl), iron aluminides (Fe3Al and FeAl) and titanium aluminides (alpha-2 alloys, orthorhombic alloys, and gamma alloys).
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003140
EISBN: 978-1-62708-199-3
..., and advanced titanium alloys (titanium-matrix composites and titanium aluminides). physical metallurgy titanium alloys application titanium aluminides titanium-matrix composites TITANIUM is a low-density element (approximately 60% of the density of iron) that can be highly strengthened...
Abstract
Titanium and its alloys are used in various applications owing to its high strength, stiffness, good toughness, low density, and good corrosion resistance. This article discusses the applications of titanium and titanium alloys in gas turbine engine components, aerospace pressure vessels, optic-system support structures, prosthetic devices, and applications requiring corrosion resistance and high strength. It explains the effects of alloying elements in titanium alloys as they play an important role in controlling the microstructure and properties and describes the secondary phases and martensitic transformations formed in titanium alloy systems. Information on commercial and semicommercial grades and alloys of titanium is tabulated. The article also discusses the different grades of titanium alloys such as alpha, near-alpha alloys, alpha-beta alloys, beta alloys, and advanced titanium alloys (titanium-matrix composites and titanium aluminides).
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004000
EISBN: 978-1-62708-185-6
..., heat treatment, and inspection. The article presents a discussion on titanium alloy precision forgings and concludes with information on the forging of advanced titanium materials and titanium aluminides. cleaning die heating forgeability forging forging design forging equipment forging...
Abstract
Titanium alloys are forged into a variety of shapes and types of forgings, with a broad range of final part forging design criteria based on the intended end-product application. This article begins with a discussion on the classes of titanium alloys, their forgeability, and factors affecting forgeability. It describes the forging techniques, equipment, and common processing elements associated with titanium alloy forging. The processing elements include the preparation of forging stock, preheating of the stock, die heating, lubrication, forging process, trimming and repair, cleaning, heat treatment, and inspection. The article presents a discussion on titanium alloy precision forgings and concludes with information on the forging of advanced titanium materials and titanium aluminides.
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Published: 01 December 1998
Fig. 17 Comparison of the creep behavior of conventional titanium alloys and titanium aluminide intermetallics
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in Ordered Intermetallics
> Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
Fig. 22 Comparison of the creep behavior of conventional titanium alloys and titanium aluminide intermetallics. Source: Ref 167
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Published: 01 January 2005
Fig. 2 Portion of the binary titanium-aluminum phase diagram of interest in the processing of near-gamma and single-phase gamma titanium aluminide alloys. Source: Ref 46
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Published: 01 December 2009
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Published: 01 December 2009
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Published: 01 January 2005
Fig. 16 Flow charts for four processing scenarios for a near-gamma titanium aluminide hub-flange part. HIP, hot isostatic pressing. Source: Ref 98
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Published: 01 January 2005
Fig. 13 Comparison of measured and predicted equiaxed alpha grain-growth kinetics for a near-gamma titanium aluminide alloy annealed in the alpha + gamma phase field. Source: Ref 46
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Published: 01 January 2005
Fig. 9 Finite-difference model predictions of temperature transients during pack rolling of gamma-titanium aluminide preforms; total pack thickness prior to rolling=3.5 mm (0.14 in.). Source: Ref 65
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Published: 01 January 2005
Fig. 17 Width versus thickness strain (ε w versus ε t ) for an orthorhombic titanium aluminide specimen deformed at 980 °C and a nominal strain rate of 1.67 × 10 −4 s −1 . Source: Ref 10
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