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Published: 30 September 2015
Fig. 20 Green strength, green density, and apparent density of water-atomized steel powder. Source: Ref 17
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Published: 30 September 2015
Fig. 7 Green strength versus green density of 316L powder admixed with various lubricants and additives compacted at 414, 552, and 662 MPa (30, 40, and 48 tsi), respectively. Source: Ref 3
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Published: 30 September 2015
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Published: 01 December 1998
Fig. 5 Effect of particle porosity on (a) green density and (b) green strength of solid and porous iron powders. Powders were pressed at 414 MPa (30 tsi) using die wall lubrication. The figures in parentheses in (a) signify specific surface areas (as measured by the gas adsorption method
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Published: 30 September 2015
Fig. 5 Fractional sintered density versus fractional green density for tungsten specimens. 3N tungsten powder with particle size (FSSS) of 2.2 μm
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in High-Strength Aluminum Powder Metallurgy Alloys
> Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
Published: 01 January 1990
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Published: 30 September 2015
Fig. 2 Effect of compacting pressure and die temperature on (a) green density and (b) green strength of a high purity water atomized iron powder (0.004 wt% C, 0.09 wt% O, 0.05 wt% Mn). Source: Ref 1
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Published: 30 September 2015
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Published: 30 September 2015
Fig. 6 Comparison between the computer-simulated green density gradients (PMsolver) and the experimental results taken from hardness tests on a cross-sectioned green compact of a cutting tool formed from WC-Co powder. Source: Ref 35
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Published: 30 September 2015
Fig. 13 Optimization to minimize the green density gradients during die compaction of a steel hub component. (a) Compaction tool set and analysis domain. (b) Variation of objective function during optimization iteration. (c) Green density distributions in the initial and optimum designs
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Published: 30 September 2015
Fig. 16 Effect of green density on mechanical properties of pressed and sintered electrolytic iron powder compacts (A-210 + 0.5% zinc stearate, sintered at 1120 °C, or 2050 °F, for 30 min in dissociated ammonia)
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Published: 30 September 2015
Fig. 8 Schematic representation of the effects of green density, sintering temperature, d sintering time on sintered density. Source: Ref 10
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Published: 30 September 2015
Fig. 2 Fractional green density versus compacting pressure, W (0.004 mm) with particle size (FSSS) of 4.0 μm and fractional apparent density of 0.32, W (0.015 mm) with particle size (FSSS) of 15 μm and fractional apparent density of 0.42. Source: Ref 3
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Published: 30 September 2015
Fig. 13 Effect of compaction pressure on green density of uniaxially cold-pressed beryllium powder. Source: Ref 7
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Published: 01 November 2010
Fig. 6 Comparison between the computer-simulated green density gradients (PMsolver) and the experimental results taken from hardness tests on a cross-sectioned green compact of a cutting tool formed from WC-Co powder. Source: Ref 35
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Image
Published: 01 November 2010
Fig. 13 Optimization to minimize the green density gradients during die compaction of a steel hub component. (a) Compaction tool set and analysis domain. (b) Variation of objective function during optimization iteration. (c) Green density distributions in the initial and optimum designs
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Published: 15 June 2020
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Published: 30 September 2015
Fig. 13 Effect of apparent density and green strength on green strength of various iron powders. Source: Ref 9
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Book: Powder Metallurgy
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006097
EISBN: 978-1-62708-175-7
... Abstract This article provides an overview of the compaction of metal powder in a rigid die and reviews the compaction characteristics of stainless steel powders, including green density, compressibility, green strength, apparent density, flow rate, and sintered density. It describes...
Abstract
This article provides an overview of the compaction of metal powder in a rigid die and reviews the compaction characteristics of stainless steel powders, including green density, compressibility, green strength, apparent density, flow rate, and sintered density. It describes the influence of compaction characteristics of stainless steel powders in tool materials selection, lubrication, annealing, double pressing/double sintering, and warm compaction.
Book: Powder Metallurgy
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006110
EISBN: 978-1-62708-175-7
..., development of liquid phase, and ability to sinter active elements in alloy steels. The article also provides information on three sources of process control requirements, namely, the powder blend, green density, and sintering conditions. alloy steels ferrous components high-temperature sintering...
Abstract
High-temperature sintering of ferrous components continues to be important in the powder metallurgy (PM) industry. Improvements in both production rates and properties are possible as sintering temperatures increase above 1120 deg C. This article provides an overview of the different various stages of the sintering process and the physical, chemical, and metallurgical phenomena occur within the mass of metal powder particles. It discusses the four advantages of high-temperature sintering of various ferrous PM materials: improved mechanical properties, improved physical properties, development of liquid phase, and ability to sinter active elements in alloy steels. The article also provides information on three sources of process control requirements, namely, the powder blend, green density, and sintering conditions.
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