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semisolid forming

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005272
EISBN: 978-1-62708-187-0
... Abstract Semisolid metal (SSM) processing, also known as semisolid metal casting, semisolid forming, or semisolid metal forging, is a special die casting process. This article discusses the origin and advantages of the SSM processing. It describes three major semisolid processing routes...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005224
EISBN: 978-1-62708-187-0
... Abstract Semisolid metal (SSM) processing is a special die casting process, where partially solidified metal slurry is injected into a die cavity to form die cast components. This article discusses the flow behavior of SSM slurry with emphasis on viscosity, rheological behavior, and yield...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005287
EISBN: 978-1-62708-187-0
..., shell mold casting, plaster casting, investment casting, permanent mold casting, squeeze casting, semisolid forming, centrifugal casting, and pressure die casting. The article presents several different factors on which the selection of a casting process depends. It discusses gating and risering...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005275
EISBN: 978-1-62708-187-0
... Abstract Thixomolding is a method of molding thixotropic semisolid magnesium alloy pellets in a machine that resembles an injection molding machine in physical appearance and operation. This article describes the process of thixomolding. The use of hot sprues and hot runners in the thixomolding...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
..., it flows easily and can be injected into a mold cavity. This behavior arises from the unique microstructure of the semisolid mass ( Fig. 23 ). It consists of equiaxed grains formed by stirring the melt during solidification. When the desired solid fraction is obtained, the melt is rapidly solidified...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005274
EISBN: 978-1-62708-187-0
... University's Rheo-Diecasting process. Source: Ref 5 It was once thought that producing appropriate semisolid feed stock could only be accomplished by cooling liquid alloy into the two-phase region and fragmenting dendrites as they formed to produce slurry having a globular microstructure. However, more...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005307
EISBN: 978-1-62708-187-0
... produced by semisolid casting methods. Zinc-matrix metal-matrix composites have also been produced by various foundry methods. Zinc has a relatively low melting point of 420°C (788 °F) and forms a eutectic with aluminum at 5% Al and 382 °C (720 °F). Thus, aluminum is the principal alloying element in the...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005187
EISBN: 978-1-62708-187-0
... Outstanding  Vacuum die casting Aluminum 4 … … …  Squeeze casting   Indirect Al and MMCs 4 No Small to medium …   Direct Nonferrous and MMCs 1 No Small to medium …  Semisolid processing   Thixocasting (billet) Aluminum 4 No Small to medium Outstanding...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006048
EISBN: 978-1-62708-172-6
... to a waxy consistency and forms a high-dielectric anticorrosive barrier. Cold-applied casing filler consists of a semisolid petrolatum material that is delivered to the job site in 210 L (55 gal) drums. It has the consistency of grease and is pumped down the casing vent with a powerful mastic pump...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003010
EISBN: 978-1-62708-200-6
...-link density of polycyanurates results in solvent resistance midrange between that of bisphenol hard epoxy resins (lowend) and the very resistant polyfunctional epoxies and bismaleimides. A variety of physical forms, including crystalline monomers, amorphous semisolid prepolymers or oligomers...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004008
EISBN: 978-1-62708-185-6
... nonferrous metals and of steel wires less than 0.5 to 1 mm (0.02 to 0.04 in.) in diameter. A transition between the two techniques is sometimes used, particularly in the low-speed drawing of bar and tube. A high-viscosity liquid or semisolid is applied to the workpiece and/or die. Reference 8 provides...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003138
EISBN: 978-1-62708-199-3
... saltwater corrosion resistance, is AS41B. Besides being readily cast directly from a liquid melt, magnesium alloys are also formed from semisolid slugs. The “thixomolding” process, which combines the features of die casting and injection molding, is being used to produce alloy AZ91D battery cases for...
Book Chapter

By Justin Heimsch
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005273
EISBN: 978-1-62708-187-0
... conditions generally find semisolid materials to be shear thinning. When rapid transient conditions are used, the semisolid material exhibits shear thickening behavior. In production, mold filling occurs too rapidly to allow for steady-state conditions to form, making the rapid transient condition...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005301
EISBN: 978-1-62708-187-0
.... AlP nucleates silicon in hypoeutectic alloys. This has been observed by a number of researchers. An example is shown in Fig. 10 . This particle was observed in a nonmodified Al-10%Si alloy. The sample was quenched from the semisolid state. The fine eutectic surrounding the larger silicon crystals...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001221
EISBN: 978-1-62708-170-2
... oils with abrasives Semisolids: oil based, containing abrasives and emulsions, or water based, containing abrasives and dispersing agents Solids: greases containing stearic acid, hydrogenated fatty acid, tallow, hydrogenated glycerides, petroleum waxes, and combinations that produce either...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005218
EISBN: 978-1-62708-187-0
... during faceted growth of AlPdMn quasi-crystals ( Ref 34 , 35 ); coarsening during semisolid processing of grain-refined aluminum-germanium ( Ref 36 ); equiaxed dendritic growth in rain-refined aluminum-copper ( Ref 29 ); and finally monotectic solidification in aluminum-indium ( Ref 37 ) and aluminum...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005186
EISBN: 978-1-62708-187-0
... candidate David Spencer performs experiments leading to semisolid molding, a process in which a partially frozen metal (fluidity similar to machine oil) can be poured into a die cavity. Following advancement in metal slurry consistencies with Professor Mert Flemings, Newton Diecasting Co., New Haven, Conn...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006071
EISBN: 978-1-62708-172-6
... improved by the silicone modification, and such paints are extensively used as marine and maintenance paints, although the silicone modification results in a higher paint cost. Highly thixotropic alkyds are promoted for both home and industrial use. Thixotropic paints remain in a semisolid or jellylike...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005216
EISBN: 978-1-62708-187-0
..., aluminum and copper alloys, casting of single-crystal superalloys, semisolid casting, and growth of semiconductor crystals. Macrosegregation is especially important in large castings and ingots. Because of the low diffusivity of the solutes in the solid state and the large distances involved...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005331
EISBN: 978-1-62708-187-0
... will typically display a microstructure in which the α-Al primary phase is present in the form of noninterconnected matrix surrounded by the aluminum-silicon eutectic. Figure 1 shows semisolid metal (SSM) microstructures typical of these processes. Evolution in this area has proceeded from...