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Published: 01 July 2009
Fig. 19.1 Compactability curves at room temperature for attritioned beryllium powder of various mesh sizes. Source: Beaver and Lympany 1965 More
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Published: 01 July 2009
Fig. 19.3 Compacting behavior of beryllium powder annealed twice at 816 °C (1500 °F) and recompacted or annealed twice at 1038 °C (1900 °F) and recompacted. Source: Porembka et al. 1967 More
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Published: 01 July 2009
Fig. 19.5 Increase of −200-mesh loose beryllium powder density by vibration. Source: Beaver and Lympany 1965 More
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Published: 01 July 2009
Fig. 19.10 Effect of pressing temperature on hot pressability of beryllium powder. Source: Butcher and Beasley 1964 More
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Published: 01 July 2009
Fig. 19.11 Effect of pressing pressure on hot pressability of beryllium powder. Source: Butcher and Beasley 1964 More
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Published: 01 July 2009
Fig. 19.12 Relationship between hot pressability and pressing time of beryllium powder at 100 °C (212 °F) under 13.8 MPa (1 tsi). Source: Butcher and Beasley 1964 More
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Published: 01 July 2009
Fig. 19.14 Frequency distribution of yield strengths for 241 forged beryllium powder parts. Source: Orrell 1963a , b More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230267
EISBN: 978-1-62708-298-3
... Abstract Powder metallurgy plays a central role in the production of nearly all beryllium components. This chapter describes the primary steps in the powder metal process and the work that has been done to improve each one. It explains how beryllium powders are made and how...
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Published: 01 July 2009
Fig. 19.9 Illustration of relative material movement during vacuum hot pressing of beryllium powder in a die. (a) Vibrated powder column with bands of beryllium powder alternating with bands of beryllium plus additive powder. (b) Vacuum hot pressed compact at +99.5% of theoretical density More
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Published: 01 July 2009
Fig. 26.1 Oxidation of beryllium at 700 °C (1290 °F) in a pure oxygen atmosphere with less than 12 ppm water. □, beryllium powders fabricated by Brush Wellman; ▲, ○, and ●, Pechiney beryllium from different fabrication methods; ◊, vacuum-distilled beryllium. Source: Higgins and Antill 1962 More
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Published: 01 July 2009
Fig. 19.8 Summary of the relationship between the sinterability of QMV beryllium powder and the beryllium oxide and iron impurity levels at 1200 °C (2152 °F). Source: Lympany et al. 1963 More
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Published: 01 July 2009
Fig. 20.28 Effect of hot isostatic pressing (HIP) temperature on the ultimate tensile strength and elongation of three types of consolidated beryllium powders. The dotted line is for elongation; the solid line is for ultimate tensile strength; solid circles are for impact-ground powder More
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Published: 01 July 2009
Fig. 19.16 Effects of time and temperature during pressureless sintering on the ultimate tensile strengths of +200-mesh beryllium powder (powder lot Y.9833, 1B). Source: Reeves and Keeley 1961 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550193
EISBN: 978-1-62708-307-2
... the properties, compositions, and processing characteristics of beryllium and its alloys. It provides information on powder production and consolidation, commercial designations and grades, wrought products, and forming processes. It also discusses the issue of corrosion, the use of protective treatments...
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Published: 01 October 2012
Fig. 4.4 Schematic diagrams of two powder consolidation methods. (a) Vacuum hot pressing. In this method, a column of loose beryllium powders is compacted under vacuum by the pressure of opposed upper and lower punches (left). The billet is then brought to final density by simultaneous More
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Published: 01 July 2009
Fig. 19.15 Frequency distribution of percent elongation for 241 forged beryllium powder parts. Source: Orrell 1963a , b More
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Published: 01 July 2009
Fig. 20.29 Effect of compacting pressure on the green density of uniaxially cold pressed beryllium powder. Source: Marder 1998b More
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Published: 01 July 2009
Fig. 19.7 Effect of compacting pressure on the sintered densities of −200-mesh beryllium powder compacts. Source: Hausner and Pinto 1949 More
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Published: 01 July 2009
Fig. 19.13 Frequency distribution of ultimate tensile strengths for 241 forged beryllium powder parts. Source: Orrell 1963a , b More
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Published: 01 July 2009
Fig. 19.6 Vibrational-pack densities of selected particle sizings of NP-50A beryllium powder. Source: Hodge et al. 1966 More