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powder consolidation methods

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Published: 01 October 2012
Fig. 4.4 Schematic diagrams of two powder consolidation methods. (a) Vacuum hot pressing. In this method, a column of loose beryllium powders is compacted under vacuum by the pressure of opposed upper and lower punches (left). The billet is then brought to final density by simultaneous More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550193
EISBN: 978-1-62708-307-2
... of producing clean, fine-grained powders with excellent flow and packing characteristics. The properties of consolidated billets made from this material have been equal or superior to those made with comparable mechanically comminuted material. 4.3 Powder Consolidation Methods Once powder is made...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280117
EISBN: 978-1-62708-267-9
... Abstract Gas turbine disks made from nickel-base superalloys are often produced using powder metallurgy (P/M) techniques because the alloy compositions normally used are difficult or impractical to forge by conventional methods. This chapter discusses the P/M process and its application...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120047
EISBN: 978-1-62708-269-3
... elemental (BE) method, a blend of elemental powders, along with master alloy or other desired additions, is cold pressed into shape and subsequently sintered to higher density and uniform chemistry. In the prealloyed (PA) method, hot consolidation is performed on powder produced from prealloyed stock...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230267
EISBN: 978-1-62708-298-3
... they are consolidated prior to sintering. It also compares and contrasts the properties of beryllium products made using different methods and provides composition and particle size data on commercially available powders. beryllium powder beryllium powder metallurgy sintering 19.1 Introduction Powder...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870183
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses thermoplastic composite fabrication processes and related equipment and procedures. The discussion covers consolidation and thermoforming operations as well as joining methods. composite fabrication consolidation joining thermoforming thermoplastic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
..., and brazing. It also discusses powder consolidation, rolling, drawing and extrusion, and common forging methods. fabrication finishing forging forming joining material removal powder processing METAL PRODUCTS that are subjected to mechanical reduction operations subsequent to casting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870537
EISBN: 978-1-62708-314-0
... less than 25 percent, and are relatively low in cost. Normal volume percentages are 15 to 25 percent, with SiC p particle diameters of 0.19 to 1.2 mil (3 to 30 μm). Discontinuously reinforced aluminum is usually manufactured by melt incorporation during casting or by powder blending and consolidation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870573
EISBN: 978-1-62708-314-0
... Abstract This chapter discusses the types of fibers and matrix materials used in ceramic matrix composites and the role of interfacial coatings. It describes the methods used to produce ceramic composites, including powder processing, slurry infiltration and consolidation, polymer infiltration...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240607
EISBN: 978-1-62708-251-8
...; YS, yield strength; CTE, coefficient of thermal expansion. Source: Ref 1 33.1.2 Processing DRA Composites Processing methods for MMCs include various casting processes, liquid metal infiltration, spray deposition, and powder metallurgy. Casting is currently the most inexpensive method...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240597
EISBN: 978-1-62708-251-8
...: Powder Consolidation Methods , Properties and Selection: Nonferrous Alloys and Special-Purpose Materials , Vol 2 , ASM Handbook , ASM International , 1990 • Tin and Tin Alloys , Metals Handbook Desk Edition , 2nd ed. , ASM International , 1998 • Zirconium and Hafnium , Metals...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9
...) of unreducible inclusions. The large effect of oxide inclusions on the toughness of a fully dense 4340 steel is shown in Fig. 5 . Tool steel, and even more so superalloy powders, are produced with still greater care in order to minimize defects in consolidated products. Special analytical methods are used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480161
EISBN: 978-1-62708-318-8
... are produced from powders and how the different methods compare with each other and with conventional production techniques. The methods covered include powder injection molding, spray forming, additive manufacturing, blended elemental processing, and rapid solidification. fatigue limit fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
... (even with substantial superheat), also makes it an unsuitable candidate for precision casting [ Marder et al. 1990 , Marder 1991 ]. 20.1 Powder Consolidation To overcome these problems, alternative methods have been developed for the manufacturing of beryllium. The vast majority...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120131
EISBN: 978-1-62708-269-3
... are available to deposit powder of the desired titanium matrix on the fibers to create a tape product. A number of processing techniques have been evaluated to consolidate continuously reinforced titanium composites, but only high-temperature/short-time roll bonding, hot isostatic pressing, and vacuum hot...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550457
EISBN: 978-1-62708-307-2
... composites, including those produced by preform infiltration and powder metallurgy (PM) techniques. Processing methods for discontinuous aluminum MMCs include various casting processes, liquid metal infiltration, spray deposition, and PM. Each of these processes is briefly reviewed in the following...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250139
EISBN: 978-1-62708-345-4
... steel consolidation methods P/M method Density range, g/cm 3 Notes Pressed-and-sintered steel 6.9–7.1 Conventional powder metallurgy Double processing (press, presinter, restrike, full sinter, heat treat) 7.2–7.4 Restrike (or repress) tooling has tolerances closer to finish...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290009
EISBN: 978-1-62708-319-5
... using an upward traverse. The latter is more representative of the ability of the powder to flow under gravity in an unconfined environment. The test method requires sample conditioning to remove operator variability and consolidation history through the displacement of the whole sample to loosen...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730139
EISBN: 978-1-62708-283-9
... produced as a byproduct of the polymerization reaction. In all cases the foam is formed into the desired shape by molding. Powder Processing Many products are made by pressing and sintering powders. Most ceramics are consolidated this way. Refractory oxides ceramics cannot be fabricated by melting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000223
EISBN: 978-1-62708-312-6
.... A metal powder consisting of at least two constituents that are accelerated corrosion test. Method designed partially or completely alloyed with each to approximate, in a short time, the deteriorat- other. ing effect under normal long-term service conditions. amorphous powder. A powder that consists...