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titanium aluminides
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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540415
EISBN: 978-1-62708-309-6
... Abstract This appendix provides tensile property and fracture toughness data for titanium aluminides developed for aerospace applications. plane-strain fracture toughness tensile properties titanium aluminides LIMITED MECHANICAL PROPERTIES DATA for several selected titanium...
Image
Published: 01 December 2000
Fig. 14.1 Comparison of the creep behavior of titanium aluminides with conventional titanium alloys
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Published: 01 October 2012
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Published: 01 October 2012
Fig. 6.12 Processing methods and routes for gamma titanium aluminides. HIP, hot isostatic pressing; HP, hot pressing. Source: Ref 6.3
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550299
EISBN: 978-1-62708-307-2
... Abstract 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. This chapter begins with a review of the titanium...
Abstract
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. This chapter begins with a review of the titanium-aluminum phase diagram, focusing on the properties, compositions, and microstructures of alpha-2 Ti3Al alloys. It then describes the properties, microstructures, and compositions of orthorhombic, gamma, and near-gamma alloys as well as the processing methods and procedures normally used in their production.
Image
Published: 01 October 2012
Image
Published: 01 December 2004
Fig. 31 Micrographs of titanium aluminide specimens that failed in tension. (a) 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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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170337
EISBN: 978-1-62708-297-6
... Abstract This article discusses the effect of alloying on the composition, structure, properties, and processing characteristics of ordered intermetallic compounds, including nickel aluminides, iron aluminides, and titanium aluminides. It includes several data tables along with a list...
Abstract
This article discusses the effect of alloying on the composition, structure, properties, and processing characteristics of ordered intermetallic compounds, including nickel aluminides, iron aluminides, and titanium aluminides. It includes several data tables along with a list of typical applications.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
... Abstract This chapter discusses some of the promising developments in the use of titanium, including titanium aluminides, titanium matrix composites, superplastic forming, spray forming, nanotechnology, and rapid solidification rate processing. It also reports on efforts to increase...
Abstract
This chapter discusses some of the promising developments in the use of titanium, including titanium aluminides, titanium matrix composites, superplastic forming, spray forming, nanotechnology, and rapid solidification rate processing. It also reports on efforts to increase the operating temperature range of conventional titanium alloys and reduce costs.
Image
Published: 01 October 2012
Fig. 6.3 Comparison of the creep behavior of conventional titanium alloys and titanium aluminide intermetallics. Source: Ref 6.1
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Image
Published: 01 December 2004
Fig. 17 Width versus thickness strain (ε w versus ε t ) for an orthorhombic titanium aluminide specimen deformed at 980 °C (1795 °F) and a nominal strain rate of 1.67 × 10 –4 s –1 source: Ref 10
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Image
Published: 01 December 2000
Fig. 7.2 Prealloyed powder aerospace parts. (a) F-14 fuselage brace. (b) Engine mount support fitting for the F-18 aircraft. (c) Cruise missile engine impeller. (d) Four section welded nacelle frame structure. (e) Titanium aluminide demonstration impeller. Parts were produced by the crucible
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120001
EISBN: 978-1-62708-269-3
... at temperatures to about 538 °C to 595 °C (1000 °F to 1100 °F), dependent on composition. Some alloy systems (titanium aluminides) may have useful strengths above this temperature. The cost of titanium, while approximately four times that of stainless steel, is comparable to that of superalloys. Titanium...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480113
EISBN: 978-1-62708-318-8
... titanium alloys beta titanium alloys mechanical properties metal-matrix composites shape memory alloys titanium aluminides IN THIS CHAPTER, the effects of titanium characteristics are discussed as they relate to mechanical properties. Briefly, alloy composition establishes the alloy types...
Abstract
This chapter discusses the factors that govern the mechanical properties of titanium, beginning with the morphology of the alpha phase. It explains that the shape of the alpha phase has a significant effect on many properties, including hardness, tensile strength, toughness, and ductility as well as creep, fatigue strength, and fatigue crack growth rate. It also discusses the influence of other titanium phases and the properties of titanium-based intermetallic compounds, metal-matrix composites, and shape-memory alloys.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120345
EISBN: 978-1-62708-269-3
... Fracture Toughness in Gamma TiAl , J. Met. , Vol 44 ( No. 5 ), 1992 , p 30 – 38 10.1007/BF03223047 • Chan K.S. , Toughening Mechanisms in Titanium Aluminides , Metall. Trans. , Vol 24a , 1993 , p 569 – 583 10.1007/BF02656627 • Chan K.S. , The Fatigue Resistance...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550001
EISBN: 978-1-62708-307-2
.... With the advent of the 20th century, improved lightweight materials such as aluminum, magnesium, beryllium, titanium, titanium aluminides, engineering plastics, structural ceramics, and composites with polymer, metal, and ceramic matrices began to appear. Aluminum Before the Hall-Héroult process...
Abstract
Engineers have many materials to choose from when dealing with weight-related design constraints. The list includes aluminum, beryllium, magnesium, and titanium alloys as well as engineering plastics, structural ceramics, and polymer-, metal-, and ceramic-matrix composites. This chapter provides a brief overview of these lightweight materials, discussing their primary advantages along with their properties, behaviors, and limitations.
Book Chapter
Book: Principles of Brazing
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230207
EISBN: 978-1-62708-351-5
...–1760 3050–3200 >2095 >3800 Schwartz [1987] Titanium aluminide Titanium aluminide/Cu powder mixture 1150 2100 >1350 >2460 Gale et al. [2002] Titanium alloys Cu-50Ni 975 1785 1700 3090 Norris [1986] Ag-15Cu-15Zn 700 1290 700 (a) 1290 (a) Elahi and Fenn...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060209
EISBN: 978-1-62708-355-3
... is exactly the same as that of the load-elongation curve. Examples of engineering stress-strain curves obtained from hot-tension testing of an orthorhombic titanium aluminide alloy ( Ref 15 ) at 980 °C (1800 °F) and a range of nominal (initial) strain rates are shown in Fig. 13 . The curves exhibit a stress...
Abstract
This chapter focuses on short-term tensile testing at high temperatures. It emphasizes one of the most important reasons for conducting hot tensile tests: the determination of the hot working characteristics of metallic materials. Two types of hot tensile tests are discussed in this chapter, namely, the Gleeble test and the conventional isothermal hot-tensile test. The discussion covers equipment used and testing procedures for the Gleeble test along with information on hot ductility and strength data from this test. The chapter describes the stress-strain curves, material coefficients, and flow behavior determined in the isothermal hot tensile test. It also describes three often-overlapping stages of cavitation during tensile deformation, namely, cavity nucleation, growth of individual cavities, and cavity coalescence.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120005
EISBN: 978-1-62708-269-3
... to 1100 °F), dependent on composition. Titanium aluminide alloys show promise for applications at temperatures up to 760 °C (1400 °F). Physical and mechanical properties of elemental titanium Table 2.1 Physical and mechanical properties of elemental titanium Property Description or value...
Abstract
Titanium is a lightweight metal with a density approximately 60% that of steel and, through alloying and deformation processing, it can be just as strong. It is readily available in many grades and forms and can be further processed using standard methods and techniques. This chapter provides a concise review of the capabilities of titanium and its design advantages over other materials. It includes information on properties and selection factors as well as applications.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240607
EISBN: 978-1-62708-251-8
... with improved oxidation resistance in the 705 to 815 °C (1300 to 1500 °F) range. Titanium aluminide ordered intermetallics, such as Ti-22Al-23Nb and Ti-22Al-26Nb, have also been evaluated as high-temperature-matrix materials. 33.3.2 TMC Processing Techniques Processing techniques for continuous fiber...
Abstract
Metal-matrix composites (MMCs) work at higher temperatures than their base metal counterparts and can be engineered for improved strength, stiffness, thermal conductivity, abrasion and/or creep resistance, and dimensional stability. This chapter examines the properties, compositions, and performance-cost tradeoffs of common MMCs, including aluminum-matrix composites, titanium-matrix composites, and fiber-metal laminates. It also explains how fiber-reinforced composites and laminates are made, describing both continuous and discontinuous fiber matrix production processes.
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