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thixocasting

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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
... Abstract This article provides an overview of the thixocasting process and discusses the concepts that are important to the practical application of this technology. The thixocasting process involves two casting processes. The first casting process is required to make the feedstock that must...
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Published: 01 December 2008
Fig. 4 Schematic of the thixocasting semisolid metal (SSM) route. EM, electromagnetic More
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Published: 01 December 2008
Fig. 9 Sketch illustrateing some key design concepts used in thixocasting. Notice the thick gate and runner cross sections feeding the part. Also, the part wall thickness conforms fairly well to the thick-to-thin filling ideal, while the gate has been located to minimize the potential More
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Published: 01 December 2008
Fig. 7 Schematic of semisolid metal (SSM) processing routes: thixocasting versus rheocasting. MHD, magnetohydrodynamic; GR, grain refinement More
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Published: 30 November 2018
Fig. 7 Schematic of the thixocasting process. EM, electromagnetic; SSM, semisolid metal More
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Published: 30 November 2018
Fig. 8 Thixocasting cell including a carousel-style slug induction reheater, a horizontal die casting machine, and oil heaters for controlling die temperature More
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Published: 30 November 2018
Fig. 17 100 mm (4 in.) diameter turbocharger impeller produced by thixocasting More
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006498
EISBN: 978-1-62708-207-5
... claimed for semisolid casting. It describes the four notable processes used to produce semisolid castings: thixocasting, rheocasting, thixomolding, and wrought processes. Most commercial aluminum semisolid casters use either thixocasting or rheocasting. The article discusses the die design, process...
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
...: thixocasting, rheocasting, and thixomolding. rheocasting semisolid metal casting thixocasting thixomolding SEMISOLID METAL (SSM) PROCESSING, also known as semisolid metal casting, semisolid forming, or semisolid metal forging, is a special die casting process wherein a partially solidified metal...
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Published: 30 November 2018
Fig. 18 Comparative fatigue life of conventionally cast, thixocast, and forged+machined (machined from solid, MFS) impellers. Created from data generated by Cummins Inc. More
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
... stress. It illustrates the microstructural formation of semisolids under forced convection. The article concludes with an illustration that compares two SSM processes, namely, thixocasting and rheocasting. microstructual formation rheocasting semisolid metal processing thixocasting viscosity...
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Published: 01 January 1990
Fig. 9 Semisolid-metal processing with a rheocaster. Commercial semisolid-metal processing is based on thixocasting. More
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Published: 01 December 2008
Fig. 11 Contrast between high-pressure die-casting intensification profile and thixocasting intensification profile More
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Published: 01 December 2008
Fig. 5 Schematic of the rheocasting semisolid metal (SSM) route compared to thixocasting. MHD, magnetohydrodynamic; GR, grain refining More
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Published: 01 December 2008
Fig. 10 Contrast between high-pressure die-casting (HPDC) injection velocity profile and thixocasting injection velocity profile More
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Published: 01 January 1990
Fig. 8 Comparison of aluminum alloy 357 (Al-7Si-0.5Mg). (a) A dendritic microstructure from conventional casting. (b) A nondendritic microstructure formed during rheocasting or thixocasting. Both 200× More
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Published: 01 December 2008
the dendrite arm spacing. Thixocasting and rheocasting display nondendritic microstructures in which the αAl phase is present as nonconnected spheroids. Source: Ref 5 More
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Published: 01 December 2004
Fig. 21 Comparison of (a) conventional etching and bright-field illumination with (b) electrolytic etching and polarized light illumination. Specimen is thixocast (semisolid process) AZ91. Electrolytic etching reveals individual grains by the coloration while retaining good contrast More
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
..., then an ideal semisolid globular structure develops directly from the melt. This concept is the genesis of various processes and methodologies to generate semisolid slurries from the liquid state. The concept relies on controlled nucleation and growth, as opposed to the previous (thixocasting) theory in which...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006574
EISBN: 978-1-62708-210-5
... die casting and its derivatives processes, such as semisolid metalcasting (thixocasting), slurry-on-demand (rheocasting), and squeeze casting. Fluidity in die casting is somewhat lower than Silafont-36 (alloy 365.0), due to its lower silicon content. However, the tendency for shrinkage formation...