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particle drag

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140071
EISBN: 978-1-62708-264-8
... effect of particle and solute drag. forging grain size heat treatment particle drag phase transformation recrystallization solute drag AS MENTIONED in Chapter 5, “Mechanical Properties,” it is important to keep the grain size of steels as small as possible in order to improve...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.tm.t52320123
EISBN: 978-1-62708-357-7
... in a moment, and it disappears. 5.2.2 Transformation Temperature and Pressure of Fine Particles The internal pressure Δ P based on the surface (interface) tension gives the following change to the free energy ( G = U + PV – TS ). (Eq 5.12) Δ G = Δ P ⋅ V = 2 σ V r...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460067
EISBN: 978-1-62708-285-3
... in the nozzle results from the drag force on the particle. Thus, particle velocity for a spherical particle can be calculated from a force balance given as ( Ref 3.56 ): (Eq 3.8) v p d v p d z = 3 4 C d ρ ( v − v p ) | v − v p | ρ p d p...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200437
EISBN: 978-1-62708-354-6
... one particle to another. Cope . . . Upper or topmost section of a flask, mold, or pattern. Coping Out. . . The extension of sand of the cope downward into the drag, where it takes an impression of a pattern. Core . . . A preformed sand aggregate inserted in a mold to shape the interior or that part...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610461
EISBN: 978-1-62708-303-4
... can be characterized by a single key word: cutting . Abrasive wear occurs when hard particles suspended in a fluid or projections from one surface roll or slide under pressure against another surface, as shown in Fig. 1 , thereby cutting the other surface. Indeed, machining would fall...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410099
EISBN: 978-1-62708-265-5
... drag on bainite formation mechanisms. It also discusses the development of ferrite-carbide bainites and their effect on toughness, hardness, and ductility. bainite bainitic transformation ferrite mechanical behavior Bainite—An Intermediate Temperature Transformation Product of Austenite...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290085
EISBN: 978-1-62708-319-5
.... Such separation arises due to poor adhesion that allows powder separation. Another factor is particle alignment. At a high flow velocity, the particles align behind one another, similar to how race cars tuck behind leaders to lower drag. The denser particles migrate and concentrate to the centerline. Drag...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860237
EISBN: 978-1-62708-348-5
... temperature deformation of copper single crystals. J. Appl. Phys . 28 , 651 – 660 . 10.1063/1.1722824 Brown L. M. and Ham R. K. (1971) . Dislocation-particle interactions. In Strengthening Mechanisms in Crystals (eds. Kelly A. and Nicholson R. B. ). Halstead, Essex...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630189
EISBN: 978-1-62708-270-9
... usually is very hard and brittle. Thus, it is readily crushed and fragmented into much smaller particles, which can cause abrasive wear and other damage when carried by the lubricant to other parts of the mechanism. Bearings, both the rolling and sliding types; gears; and component parts, such as pumps...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460017
EISBN: 978-1-62708-285-3
... ratio of the spray nozzle. Particle impact velocities depend on the acceleration in the surrounding gas jet, which is governed by the gas velocity, the related drag forces by the gas density or pressure, the nozzle length, and the powder mass. The particle temperature upon impact depends on various...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740047
EISBN: 978-1-62708-308-9
... with specially bonded core sand and compacted much like the mold itself. Cores are placed in the drag, or bottom section, of the mold, and the mold is then closed by placing the cope, or top section, over the drag. Mold closing completes the production of the mold, into which the molten metal is then poured...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290261
EISBN: 978-1-62708-319-5
... All rights reserved www.asminternational.org APPENDIX Glossary A acicular powder. Needle-shaped particles good for debinding strength but generally detrimental to the forming process because they resist ow in molding. additive manufacturing (AM). A process of joining materials to make components from...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.9781627083195
EISBN: 978-1-62708-319-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030117
EISBN: 978-1-62708-282-2
... indicate that in most practical cases, the erodent particles actually strike the surface at a variety of shallower angles, depending on the size and velocity of the particles and the drag exerted on them by the conveying fluid. For impacts normal to the target surface, therefore, it is likely that only...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290169
EISBN: 978-1-62708-319-5
... by a discussion on the tools used for measuring bulk properties to monitor sintering and density. The effects of key parameters, such as particle size, oxygen content, sintering atmosphere, and peak temperature, on the sintered properties are discussed. Further, the chapter covers sintering cycles and sintering...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900109
EISBN: 978-1-62708-358-4
..., similar to that of a fluid, is shown in Fig. 6-13 . When gas is forced upward through small holes in a supporting plate, two forces meet to raise the particles: the buoyancy of the gas and the retarding force known as aerodynamic drag. Fig. 6-13 Schematic showing the principle of the fluidized-bed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240095
EISBN: 978-1-62708-251-8
.... It has been shown that nucleation of pores is difficult in the absence of some sort of substrate, such as a nonmetallic inclusion, a grain refiner, or a second-phase particle. Investigations have shown that castings free of inclusions have less porosity than castings that contain inclusions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460253
EISBN: 978-1-62708-285-3
... velocities were obtained with the irregular powder from supplier 2, because of the higher drag force in that case. However, particle velocities of all powders measured at these conditions, ranging from ~480 to 820 m/s (1570 to 2700 ft/s), appeared to be within the deposition window between the erosion...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050335
EISBN: 978-1-62708-311-9
... strainers are widely used and are the lowest cost. They trap only the larger particles and are suitable for quench tanks. In applications that use spray quenching, a higher degree of filtration is recommended to help keep the holes in the quench rings from clogging. In this case, cartridge- and bag-type...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2000
DOI: 10.31399/asm.tb.aet.t68260149
EISBN: 978-1-62708-336-2
..., and the frictional drag drops. (c) Use of a die diameter of proper size can prevent flare. In the beginning of the extrusion, as shown in Fig. 14(a) , the container liner is properly sealed with the die face due to the combined effect of sealing pressure and the frictional drag at the billet container...