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superplastic deformation

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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 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.a0005458
EISBN: 978-1-62708-196-2
... and (d) a schematic of the constrained β-layer in which the cavity nucleates Fig. 5 Total number density of all voids in an Al-Mg-Cu-Mn superplastic alloy as a function of strain at various temperatures and strain rates, showing that voids nucleate continuously during deformation Fig. 6...
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
... in (a). Fig. 37 Mantle strain rate as function of total strain rate for the two alloys from Table 4 . Note the finer-grain alloy (alloy 2) also has higher dispersoid density ( q is higher). Fig. 38 Concurrent grain growth during superplastic deformation simulated for alloy 1 for a variety...
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
... during Superplastic Deformation of Al-Cu Eutectic Alloy , Met. Sci. J. , Vol 3 , 1969 , p 41 – 45 20. Nabarro F.R.N. , Report on Conference on Strength of Solids , Physical Society , London , 1948 , p 75 21. Herring C. , Polycrystalline Viscosity of Polycrystalline...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005183
EISBN: 978-1-62708-186-3
...)</xref> Research on the mechanism of superplastic flow in fine-grain metals has encompassed many ideas, such as diffusional creep ( Ref 39 , Ref 40 , 41 ), dislocation creep ( Ref 42 , 43 ) with diffusional accommodation at grain boundaries ( Ref 35 ), concepts of grain-mantle deformation ( Ref 44 , 45...
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
... ) cross-sectional area deformed at 516 °C (961 °F) under a constant strain rate of 2×10 −4 s −1 Fig. 43 Effect of hydrostatic pressure on the suppression of cavitation in a 7475 aluminum alloy specimen superplastically deformed at 516 °C (961 °F) Fig. 2 Schematic plot of load versus...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009010
EISBN: 978-1-62708-185-6
... for different mechanisms. r c , critical cavity radius; r osp , cavity radius for onset of superplastic deformation; r csp , critical cavity radius for superplastic deformation. Source: Ref 44 Fig. 26 Direct-equilibrium simulation predictions of engineering stress-strain curves at hot-working...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003286
EISBN: 978-1-62708-176-4
... required for superplastic materials due to the large strains that are realized. A comprehensive overview entitled “Superplastic Deformation at Elevated Temperatures” is provided in this Section. Considerations for determining the optimum strain rate and impurity level are also discussed in this article. ...
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
... superplastic forming tailor-welded blanks thermal forming tooling designs SHEET FORMING comprises deformation processes in which a metal blank is shaped by tools or dies, primarily under the action of tensile stresses. The design and control of such processes depend on the characteristics...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003993
EISBN: 978-1-62708-185-6
...)</xref> Alloy A-286 (UNS S66286) Alloy 556 (UNS R30556, or N-155) Alloy 800 (UNS N08800) Isothermal, or Superplastic Forging Alloy 600 Alloy 718 (As-Cast) Alloy 718 (Wrought 23 μm Grain Size) Alloy 901 Waspaloy Gatorizing Recrystallization Superplastic Deformation Dynamic...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006282
EISBN: 978-1-62708-169-6
... superplastic behavior. Plastic deformation may produce extensive changes in the external appearance of a metal. Substantial internal changes also occur. The effects of both hot and cold working should be considered when evaluating the structural effects of plastic deformation. A metal is considered...
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
... as long as the diameter of the tubing and on maximum mandrel-ball support of the tubing. Activation energies for superplastic deformation and self-diffusion in titanium alloys Table 3 Activation energies for superplastic deformation and self-diffusion in titanium alloys Alloy Temperature...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003294
EISBN: 978-1-62708-176-4
.... Technol. , Vol 85 ( No. 1–3 ), 1999 • Jin Z. and Bieler T.R. , An Investigation of High Strain Rate Superplastic Deformation Mechanisms by Means of Texture Analysis , Advances in Superplasticity and Superplastic Forming , 2–5 Nov 1992 (Chicago, IL), Minerals, Metals...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003985
EISBN: 978-1-62708-185-6
... IN 100 , Met. Sci. , Vol 16 , 1982 , p 356 – 362 10.1179/030634582790427451 13. Menzies R.G. , Davies G.J. , and Edington J.W. , Microstructural Changes During Superplastic Deformation of Powder-Consolidated Nickel-Base Superalloy IN 100 , Met. Sci. , Vol 16 , 1982 , p...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006729
EISBN: 978-1-62708-210-5
... rate is above 1.0 per second. Adiabatic shear band formation occurs in this region. Other processing conditions are: Superplastic deformation in the temperature range 425 – 550 °C (800 – 1020 °F) at a strain rate range of 0.001 – 0.01 per second with a maximum efficiency of 44% occurring at 500...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005409
EISBN: 978-1-62708-196-2
... to be equivalent to the diffusivity of vanadium in ed beta titanium. By analogy with the relation between the rates of dynamic and static coarsening, A BDM thus quantifies the enhancement of diffusion due to concurrent superplastic deformation. The static coarsening/thickening of alpha lamellae in colony...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005508
EISBN: 978-1-62708-197-9
... to determine the large-strain flow stress of metals due the occurrence of necking at relatively small strains. Nevertheless, it does find application for the modeling of sheet-forming processes under ambient-temperature conditions (in which deformations can be moderate) and superplastic-forming operations...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005606
EISBN: 978-1-62708-174-0
... 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...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001446
EISBN: 978-1-62708-173-3
... and some nonmetals in like or dissimilar combinations, the minimal amount of deformation that results, and the fact that the weld area is mostly independent of welding time. These advantages are offset by the need to machine paris to fairly tight tolerances on component fit-up, as well as on surface finish...
Book Chapter

Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005612
EISBN: 978-1-62708-174-0
... temperature. They concluded that the strengths of the bonds increased with the degree of deformation during welding ( Fig. 8 ), which resulted from higher bonding temperatures or increased amounts of the superplastic Y-TZP phase in at least one member of the joint. Flexural strengths greater than 1000 MPa...