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densification

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003054
EISBN: 978-1-62708-200-6
... such as reaction sintering and self-propagating, high-temperature synthesis. It also describes several pressure densification methods, including hot isostatic pressing, gas pressure sintering, molten particle deposition, and sol-gel processing. The article concludes with a section on grain growth that discusses...
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Published: 01 November 1995
Fig. 9 Typical carbon-carbon densification process. Source: Ref 59 More
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Published: 01 November 1995
Fig. 11 Schematic diagram showing grain growth, densification, and coarsening kinetics vs. reciprocal temperature. Temperature ranges suitable for rate-controlled sintering and fast firing are indicated. More
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Published: 01 November 1995
Fig. 12 Role of densification during liquid-phase sintering as a function of rearrangement, solution precipitation, and final pore removal. (a) Schematic of typical microstructure and pore size of three stages of liquid-phase sintering. (b) Plot of densification versus sintering time for Al 2 More
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Published: 01 November 2010
Fig. 30 Various proposed preform profiles for densification of a powder metallurgy gear More
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Published: 01 November 2010
Fig. 31 Densification due to cogging of powder metallurgy gear teeth as predicted by finite-element modeling for the profiles shown in Fig. 30 More
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Published: 01 January 2001
Fig. 4 Typical carbon-carbon densification process. Source: Ref 16 More
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Published: 30 September 2015
Fig. 7 (a) Combination of direct powder process with hot rolling densification. (b) Microstructure of green titanium strip. (c) Microstructure of consolidated strip. Source: Ref 21 More
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Published: 30 September 2015
Fig. 15 Densification curves for 98% W-1% Ni-1% Fe powder compact with different tungsten particle sizes (1 μm and 5 μm) during heating and isothermal sintering at 1460 °C (2660 °F). Source: Ref 110 More
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Published: 30 September 2015
Fig. 19 Schematic diagram comparing the effects of solubility on densification or swelling during liquid-phase sintering. Source: Ref 105 More
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Published: 30 September 2015
Fig. 24 (a) Idealized two-sphere model for densification by contact flattening. (b) Schematic diagram illustrating densification accompanied by Ostwald ripening. Grain shape accommodation can also occur when the liquid volume fraction is low. More
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Published: 30 September 2015
Fig. 30 The conceptual outline of supersolidus liquid-phase sintering densification for three particles: (a) initial particle packing, (b) formation of initial liquid with insufficient wetting of grain boundaries for densification, (c) viscous flow densification of semisolid particles, and (d More
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Published: 30 September 2015
Fig. 7 Hot isostatic pressing densification maps for a nickel-base superalloy powder having a particle diameter of 50 µm (2 mils). (a) Density as a function of pressure (pressure expressed as the log of the ratio of applied hydrostatic pressure over flow stress) when processed at constant More
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Published: 30 September 2015
Fig. 3 Densification of copper compacts as a function of temperature and time. Source: Ref 7 More
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Published: 30 September 2015
Fig. 4 Sintering densification parameter versus sintering time for tungsten compacts sintered at 2100 °C (3810 °F). D s is sintered density; D g is green density; D t is theoretical density. 3N tungsten powder with particle sizes (FSSS) of 2.15 μm and 4.05 μm. Source: Ref 7 More
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Published: 01 January 1997
Fig. 7 Progressive densification and grain growth at several stages of sintering: (a) initial stage, (b) intermediate stage, (c) final stage, and (d) fracture surface. The fracture surface micrograph shows the desirable placement of spherical pores on grain boundaries in the final stage More
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Published: 15 June 2020
Fig. 2 Contour maps showing the effect of power and scan speed on densification of (a) tungsten and (b) molybdenum. Source: Ref 11 More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006033
EISBN: 978-1-62708-175-7
... Abstract This article discusses continuum modeling, which is the most relevant approach in modeling grain growth, densification, and deformation during sintering. Continuum plasticity models are frequently used to describe the mechanical response of metal powders during compaction. The article...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006621
EISBN: 978-1-62708-290-7
... Abstract This article focuses on a study that was performed to understand the effects of powder attributes; process parameters; and hot isostatic pressing (HIP) treatment on the densification, mechanical and corrosion properties, and microstructures of 17-4 PH stainless steel gas- and water...
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
... (or pressure) sintering. This article provides information on the mechanisms and theoretical analysis of sintering and focuses on the types, mechanisms, process and microstructural variables, computer simulation, stages, and fundamentals of densification and grain growth of solid-state sintering and liquid...