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superplasticity

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Published: 01 December 2009
Fig. 3 Schematic illustration of the Ball-Hutchison mechanism of superplasticity. Source: Ref 28 More
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005147
EISBN: 978-1-62708-186-3
... Abstract This article discusses many of the processes and related considerations involved in the forming of superplastic sheet metal parts. It reviews the requirements for superplasticity and describes the characteristics of superplastic metals. The characterization of superplastic behavior...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003292
EISBN: 978-1-62708-176-4
... Abstract Studies on mechanical behavior of superplasticity at or above 50" of the melting point lead to the understanding of superplasticity as a creep phenomenon. This article provides a discussion on the four relationships that define the basic deformation characteristics associated...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005433
EISBN: 978-1-62708-196-2
... Abstract This article presents a mechanical description of superplasticity and discusses constitutive equations that are essential for simulating superplastic forming processes, applicable to structural superplasticity. It presents the phenomenological constitutive equations of superplasticity...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004010
EISBN: 978-1-62708-185-6
.... A schematic of a more sophisticated roll forming mill that can employ both axial and radial roll forming is shown in Fig. 3 . This hot roll forming mill was developed at the Institute for Metals Superplasticity Problems (IMSP), Ufa, Russia, to form axisymmetric and flanged shapes by localized, incremental...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005458
EISBN: 978-1-62708-196-2
... nucleation cracklike interface cavities cavity growth large-faceted cavities cavity initiation creep cavitation superplastic deformation hot deformation process modeling THE FORMATION AND GROWTH of internal voids in metallic alloys are of considerable concern in components produced...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004020
EISBN: 978-1-62708-185-6
..., followed by the models of constitutive behavior. It provides a discussion on creep mechanisms involving dislocation and diffusional flow, such as the Nabarro-Herring creep and the Coble creep. The equations for the several creep rates are also presented. Research on the mechanism of the superplastic flow...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005100
EISBN: 978-1-62708-186-3
... process-related developments, namely, superplastic forming of aluminum, forming of tailor-welded blanks, rubber-pad forming, and high-velocity metal forming. The article explains cost-effective approaches of evaluating tooling designs prior to the manufacture of expensive steel dies and dieless forming...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005146
EISBN: 978-1-62708-186-3
... and lubricants used in the forming process. It provides information on the cold and hot forming, superplastic forming, and combination of superplastic forming/diffusion bonding. The article discusses the various forming processes of these titanium alloys, including press-brake forming, power (shear) spinning...
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Published: 01 January 1987
Fig. 1083 Tensile-overload fracture in a specimen of a superplastic eutectic alloy containing 67% Al and 33% Cu. The material was cast, and the as-cast ingot was extruded at 430 °C (805 °F). Testing was performed at 0.025 mm/s (0.001 in./s) and at a controlled temperature of 450 °C (840 °F More
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Published: 01 January 1990
Fig. 6 Use of aluminum-lithium alloys and superplastic-forming (SPF) aluminum-lithium alloys in a fighter aircraft More
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Published: 01 January 2005
Fig. 9 Double-well pan superplastically formed using aluminum alloy 7475 More
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Published: 31 October 2011
Fig. 1 Superplastic forming/diffusion bonding (SPF/DB) of titanium sheet. (a) Sequence of operations required to join three sheets of superplastic titanium alloy using the SPF/DB process. (b) Typical three-sheet titanium alloy component superplastically formed following diffusion bonding More
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Published: 01 January 2005
Fig. 38 Concurrent grain growth during superplastic deformation simulated for alloy 1 for a variety of strain rates plotted as a function of (a) time and (b) strain More
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Published: 01 January 2006
Fig. 38 Concurrent grain growth during superplastic deformation simulated for alloy 1 for a variety of strain rates plotted as a function of (a) time and (b) strain More
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Published: 01 January 2006
Fig. 9 Schematic of the blow forming technique for superplastic forming More
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Published: 01 January 2006
Fig. 12 Examples of thermoforming methods used for superplastic forming. (a) Plug-assisted forming into a female die cavity. (b) Snap-back forming over a male die that is moved up into the sheet More
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Published: 01 January 2006
Fig. 14 Punch setup for deep drawing a superplastic sheet. (a) Plot showing thinning characteristics of a 59.9 mm (2.36 in.) diameter Zn-21Al-1Cu-0.1Mg heated sheet that was formed using the 160 mm (6.3 in.) diameter water-cooled punch setup illustrated in (b) and (c). N , blankholder load More
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Published: 01 January 2006
Fig. 15 Cross section of the superplastic forming (SPF) process combined with diffusion bonding (SPF/DB). The process shown uses preplaced details to which the superplastic sheet is bonded. More
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Published: 01 January 2006
Fig. 16 Operations required for joining two sheets of superplastic alloy using the superplastic forming/diffusion bonding process More