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intensification phase

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005268
EISBN: 978-1-62708-187-0
... the shot profile, intensification phase, and component size. aluminum cold chamber die casting magnesium cold chamber high-pressure die casting machine shot profile intensification phase component size THE COLD CHAMBER die casting process is used with higher-melting-point alloys...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006525
EISBN: 978-1-62708-207-5
... (pressure). The velocity changes are linear or parabolic. This output force allows the plunger to move forward and is increased after the cavity is full for the intensification phase, described below. Sizing of the cold chamber and plunger tip is highly dependent on what is being cast. The size...
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
... technology. It took almost a quarter century of investigation before semisolid metal casting matured into a fully commercialized process ( Ref 1 ). At the heart of all semisolid metal casting processes is the need for material comprised of a globular solid phase surrounded by a lower-melting-point liquid...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005292
EISBN: 978-1-62708-187-0
... curve(s). This sampling technique provided adequate data during the slow-shot phase and during intensification but was a poor method of gathering velocity data during the fast-shot phase, where the casting is actually being made. The more intuitive injection profile plots velocity and pressures...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005266
EISBN: 978-1-62708-187-0
... of injection can be accomplished in several steps. The third phase of injection is activated as the cavity is close to being filled. This intensification phase draws on an accumulator of high-pressure hydraulic fluid or multiplies pressure using conventional piston intensifiers. This increases the pressure...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005318
EISBN: 978-1-62708-187-0
... to control the piston acceleration in a linear fashion. Parabolic velocity curves are also available on some controls. This phase of injection can be accomplished in several steps. The third phase of injection is activated as the cavity is close to being filled. This intensification phase draws...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006117
EISBN: 978-1-62708-175-7
... Abstract Sintering is a thermal treatment process in which a powder or a porous material, already formed into the required shape, is converted into a useful article with the requisite microstructure. Sintering can be classified as solid-state, viscous, liquid-phase, and pressure-assisted...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005421
EISBN: 978-1-62708-196-2
... , strain in the uniform region of the specimen f h , volume fraction of hard phase ϕ, stress-intensification factor F, size of initial geometric defect (taper) F T , stress triaxiality factor η, individual cavity-growth rate parameter in uniaxial tension η APP , apparent cavity-growth rate η ts...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003769
EISBN: 978-1-62708-177-1
... Abstract This article focuses on the metallography and microstructures of wrought and cast aluminum and aluminum alloys. It describes the role of major alloying elements and their effect on phase formation and the morphologies of constituents formed by liquid-solid and/or solid-state...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006448
EISBN: 978-1-62708-190-0
... to minimize exposure time. Fig. 13 Tube rating chart for a typical beryllium-window tube with a 0.3 mm (0.012 in.) focal spot. Tube rating is for continuous operation with a full-wave-rectified single-phase power supply. Below 22.5 kVp, tube current is limited by desired filament life; above 34.5 kVp...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
... grains. Moreover, small cracks with size on the order of microstructure heterogeneity (grains, phases) propagate below driving-force levels corresponding to long crack thresholds and can be arrested by interaction with strong microstructure barriers. Such microstructurally small cracks are subject...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002418
EISBN: 978-1-62708-193-1
... nominally brittle materials notch sensitivity strengthening tensile strength toughening toughness models IN MATERIALS that do not develop macroscopic inelastic strain prior to failure, stress concentrations arise at strain intensification sites. The design procedure for such materials requires...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003749
EISBN: 978-1-62708-177-1
... and color contrast. A very thin layer absorbs all the wavelengths and gives a gray contrast. Thickening of the layer causes interference effects, which result in cancellation of particular wavelengths and the intensification of color contrast. Fig. 1 Concept of improved contrast between two phases...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006269
EISBN: 978-1-62708-169-6
... on the surface properties of titanium and two-phase α + β alloys. biocompatibility corrosion resistance fatigue gas nitriding kinetics nitriding plasma nitriding steel titanium alloys titanium product wear properties THERMOCHEMICAL SURFACE engineering plays a significant role in improving...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.9781627081962
EISBN: 978-1-62708-196-2
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006524
EISBN: 978-1-62708-207-5
...-strength capabilities. Many hypereutectic silicon alloys (12 to 30% Si) also contain copper. The primary silicon phase imparts excellent wear resistance, and copper contributes to matrix hardening and elevated-temperature strength. Aluminum-Silicon Binary aluminum-silicon alloys exhibit...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003086
EISBN: 978-1-62708-199-3
... The melting point is the temperature at which the solid and liquid phases of a pure material are in equilibrium. The boiling point is the temperature at which the vapor pressure of a liquid equals the pressure of the surroundings: normally this pressure is taken to be 1 atm (760 torr). The melting...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002366
EISBN: 978-1-62708-193-1
... conditions. Note that TF = 0 for torsion, 1 for uniaxial loading, and 2 for in-phase, equibiaxial loading. Typical behavior is exhibited by Haynes 188 cobalt-base alloy at 760 °C ( Ref 19 ), as shown in Fig. 1 . Use of the triaxiality factor offers somewhat improved correlation of uniaxial and torsional...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002410
EISBN: 978-1-62708-193-1
... crystal structure, along with carbides and other phases occurring either in the matrix or at grain boundaries ( Ref 8 ). This microstructure can be significantly influenced by appropriate thermomechanical treatments and composition modifications to create specific microstructures that are resistant...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... at high temperatures due to metallurgical instabilities; for example, carbide coarsening, sigma-phase formation, temper embrittlement, and so on can facilitate rapid brittle fracture at low temperatures during transient conditions. As a rule, the type of failure is established by examination...