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Published: 30 June 2023
Fig. 9 Simplified diagrams illustrating the influence of powder characteristics on flowability, spreadability, and shrinkage in laser powder-bed fusion processing. (a) Uniform particle size distribution (PSD) has larger interstitials and leads to layer shrinkage in the z -direction when More
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Published: 12 September 2022
Fig. 17 Polymer part characteristics in the powder-bed fusion (PBF) process. Adapted from Ref 80 More
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Published: 01 December 1998
Fig. 5 Pressing characteristics of premixed and prealloyed 90Cu-10Sn powders More
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Published: 30 September 2015
Fig. 1 Pressing characteristics of premixed and prealloyed 90Cu-10Sn powders. Source: Ref 1 More
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006088
EISBN: 978-1-62708-175-7
... results in the powder mixture. It describes the effects of metal powder characteristics on blending and mixing: particle size, shape, density, and surface features. The article also provides information on the equipment, tumble-type blenders, and low-shear agitated-type blenders used for blending...
Book Chapter

By Chris Schade, John J. Dunkley
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006084
EISBN: 978-1-62708-175-7
... and research methods. This article describes the key process variables and production factors for the industrial methods: two-fluid, centrifugal, vacuum or soluble-gas, and ultrasonic atomization. It also reviews the effect of atomization methods and process variables on key powder characteristics...
Book Chapter

By Roland T. Warzel, III
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006068
EISBN: 978-1-62708-175-7
.... The process details include raw materials, melting method, and control of physical and chemical powder characteristics. The article describes the gas atomization of stainless steel powders and processes that are done after water atomization: drying, screening, annealing, and lubricating. It also discusses...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
... Abstract This article focuses on the significant fundamental powder characteristics, which include particle size, particle size distribution, particle shape, and powder purity, followed by an overview of general and individual powder production processes such as mechanical, chemical...
Book Chapter

By B. Lynn Ferguson
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003988
EISBN: 978-1-62708-185-6
... Abstract Powder forging is an extension of the conventional press and sinter powder metallurgy process, which is recognized as an effective technology for producing a variety of parts to net or near-net shape. This article focuses on the material considerations, such as powder characteristics...
Book Chapter

By Leander F. Pease, III
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001044
EISBN: 978-1-62708-161-0
... Abstract Certain metal products can be produced only by powder metallurgy; among these products are materials whose porosity is controlled. Successful production by powder metallurgy depends on the proper selection and control of process variables: powder characteristics; powder preparation...
Book Chapter

By Chris Schade
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006089
EISBN: 978-1-62708-175-7
... Abstract Milling of materials, whether hard and brittle or soft and ductile, is of prime interest and of economic importance to the powder metallurgy (PM) industry. This article discusses the principles of milling, milling parameters, and the powder characteristics required for the process...
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Published: 15 June 2020
Fig. 15 (a) Image of powder feeding within a laser-based directed-energy deposition system using four feeding nozzles. (b) Schematic depicting beam and powder characteristics in the energy interaction area. Courtesy of the Center for Innovative Materials Processing through Direct Digital More
Book Chapter

By Daryl E. Crawmer
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005719
EISBN: 978-1-62708-171-9
... equipment as well as the characteristics of the powder being fed. Gas flow control can be achieved by using rotameters, critical orifices, and thermal mass flowmeters, whose ability to provide useful information is defined by their resolution, accuracy, linearity, and repeatability. The commercial thermal...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006087
EISBN: 978-1-62708-175-7
... such as precipitation from salt solution and gas, chemical embrittlement, hydride decomposition, and thermite reactions are also discussed. The article also discusses the methods used to produce powders electrolytically and the types of metal powders produced. The physical and chemical characteristics of these powders...
Book Chapter

By Mark Eisenmann, Richard Morgan
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006134
EISBN: 978-1-62708-175-7
... Abstract The technology to fabricate lower-density, porous powdered metal materials provides unique engineering solutions for many applications. This article summarizes the characteristics and applications of porous powder metallurgy technology, as well as the fabrication methods employed...
Book Chapter

By Neal Myers, Pankaj K. Mehrotra
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006053
EISBN: 978-1-62708-175-7
... of hardmetals includes density, magnetic saturation, coercive force, and microstructure, which are closely related to the fugitive binder used, as well as the sintering furnace and process used ( Ref 1 ). The fugitive binder affects powder granulation and flow characteristics ( Ref 2 ), which, in turn, affect...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0007021
EISBN: 978-1-62708-439-0
.... It also reviews the basic characteristics of powder feedstocks and the management of metallic powders. alloy powders metal additive manufacturing powder production THIS ARTICLE PROVIDES an overview of the supply chain for metallic additively manufactured materials ( Fig. 1 ), with an emphasis...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006973
EISBN: 978-1-62708-439-0
... that is capable of fabricating a wide range of part sizes, but, in comparison with L-PBF, DED exhibits lower resolutions. More information on these processes is detailed in Table 5 . Characteristics of powder-bed and powder-fed additive manufacturing techniques Table 5 Characteristics of powder-bed...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... and fabrication sources of failure, addresses the key factors in production and quality control, and explains failure analysis of AM parts. binder jet sintering directed energy deposition failure analysis metal products metallurgical characteristics powder bed fusion quality assurance ADDITIVE...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006139
EISBN: 978-1-62708-175-7
... conditions on the characteristics of copper and copper alloy powders. air atomization atomization brass bronze copper alloy powder copper powder electrolysis electrolyte composition finishing gas atomization grinding nickel-silver alloy oxide reduction powder production pure copper water...