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isothermal forging

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040257
EISBN: 978-1-62708-300-3
... Abstract This chapter discusses the processes of isothermal and hot-die forging and their use in producing aerospace components. It explains how isothermal forging was developed to provide a near-net shape component geometry and well-controlled microstructures and properties with accurate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040007
EISBN: 978-1-62708-300-3
... processes, including closed-die forging, extrusion, electrical upsetting, radial forging, hobbing, isothermal forging, open-die forging, orbital forging, and coining. forging processes References [Altan et al., 1983] Altan T. , Oh S.-I. , Gegel H.L. , Metal Forming...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480225
EISBN: 978-1-62708-318-8
... Abstract This chapter discusses the equipment and processes used to convert titanium billet and bar into useful shapes or more refined product forms. These secondary working operations include open-die, closed-die, hot-die and isothermal forging as well as ring rolling and extruding...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740103
EISBN: 978-1-62708-308-9
..., including open-die and closed-die forging, hot upset and roll forging, high-energy-rate forging, ring rolling, rotary swaging, radial and orbital forging, isothermal and hot-die forging, precision forging, and cold forging. The chapter also includes information on cold and hot extrusion and drawing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120033
EISBN: 978-1-62708-269-3
... of forged titanium alloys. Closed-die forging can be classified as blocker type (single die set), conventional (two or more die sets), or high definition (two or more die sets). Precision die forging also is conducted, usually employing hot-die/isothermal forging techniques. Conventional closed-die titanium...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
... Component production by isothermal or superplastic forging to shape/dimensions The first aircraft gas turbine to employ widespread use of a P/M extruded and isothermally forged nickel-base superalloy turbine was the Pratt & Whitney F100. It began operational service on the F-15 Eagle fighter...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240279
EISBN: 978-1-62708-251-8
... sliding can occur. Creep forming, hot die forging, isothermal forging, and isothermal rolling are processes that rely in part on grain-boundary sliding and other thermally activated deformation mechanisms. The workability, or the ease with which a metal is shaped by plastic deformation, is lower...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.9781627083003
EISBN: 978-1-62708-300-3
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560309
EISBN: 978-1-62708-291-4
... Abstract This chapter examines the effects of welding on the structure of metal, particularly the changes induced in the isothermal regions adjacent to the weld. It presents more than 150 images identifying structures and features associated with fusion and solid-state welding processes...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280091
EISBN: 978-1-62708-267-9
..., and two or more of these methods are often used in sequence. A particular outcome of lower strain rate was the introduction of isothermal superplastic forging/forming or, at least, isothermal forging (see later section). Customary forging temperatures for alloys and relative forgeability/formability...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550299
EISBN: 978-1-62708-307-2
... in a continuous manner, thereby allowing special techniques for reducing the development of thermal stresses. Three processes have been successfully used to break down the cast structure of gamma titanium aluminide alloys: isothermal forging, conventional (canned) forging, conventional (canned) extrusion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550223
EISBN: 978-1-62708-307-2
..., and grades of commercially pure titanium and alpha and near-alpha, alpha-beta, and beta titanium alloys. It describes primary and secondary fabrication processes, including melting, forging, forming, heat treating, casting, machining, and joining as well as powder metallurgy and direct metal deposition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040193
EISBN: 978-1-62708-300-3
... al., 1985] Wu W.T. , and Oh S.I. , “ ALPID—A General Purpose FEM Code for Simulation of Non-isothermal Forging Processes, ” Proceedings of North American Manufacturing Research Conference (NAMRC) XIII , Berkeley, CA , 1985 , p 449 – 460 . Development of finite-element (FE...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040059
EISBN: 978-1-62708-300-3
... G. , Altan T. , “ Investigation of Non-Isothermal Forging Using Ring and Spike Tests, ” Ann. CIRP , Vol 37/1 , 1988 , p 225 – 230 . 10.1016/S0007-8506(07)61623-0 [Lahoti et al., 1975] Lahoti G.D. , Altan T. , “ Prediction of Temperature Distribution in Axisymmetric...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240527
EISBN: 978-1-62708-251-8
... require two or three operations, whereas isothermal forging may require only one. A schematic of a conventional alpha-beta forging and subsequent heat treatment sequence is shown in Fig. 28.11 . The solution heat treatment offers a chance to modify the as-forged microstructure, while the aging cycle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
... A closed-die forging process in which only a portion of the workpiece is shaped during each of a series of press strokes. The primary applications of the technique are very large plan-area components of high-temperature alloys for which die pressures can easily equal or exceed 10 to 20 tsi. Isothermal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000009
EISBN: 978-1-62708-313-3
... of the alloy principal strengthening phases. Sometimes, powder metallurgy or isothermal forging is necessary to produce the wrought versions of such highly alloyed superalloys as Rene 95, Astroloy, and Inconel 100 due to their high volume fraction of γ′, which makes hot working of cast ingots difficult...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040247
EISBN: 978-1-62708-300-3
...-predicted ASTM grain sizes and the experimentally measured ASTM grain sizes for an experimental Waspaloy disk. The forging process involved a hydraulic press isothermal forging followed by a hammer forging [ Stewart, 1988 ]. Again, the model predicted well the average grain size of the forged Waspaloy disk...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480095
EISBN: 978-1-62708-318-8
... with TiAl resulted in greater thrust-to-weight ratios. Gamma TiAl can be isothermally forged using hot dies under a constant strain rate (<10 –2 /s) or at an initial strain rate of 1 × 10 –3 /s at 1150 °C (2100 °F). In the latter case, the forging of medium-sized ingot billets that have undergone hot...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... with densification operations such as HIP and forging (either conventional or isothermal) and innovative treatments such as the BUS treatment or THP. The qualification of Dynamet Technology BE powder metallurgy material by Boeing is a major step forward, as is the use of hydrogenated sponge by ADMA Products...