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metal powders
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Image
Published: 01 October 2011
Fig. 5.28 Atomization processes used in the industrial production of metal powders. Source: Ref 5.6
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Published: 01 June 1983
Figure 10.5 Variation of fluoride film thickness on metal powders exposed to fluorine gas at 193 K ( Kleinberg and Tompkins, 1962 ).
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Published: 01 November 2013
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Published: 01 November 2013
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Published: 01 October 2011
Fig. 6.2 Multilevel gears produced by powder metallurgy. Courtesy of Metal Powder Industries Federation (MPIF)
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in Introduction
> Powder Metallurgy Stainless Steels<subtitle>Processing, Microstructures, and Properties</subtitle>
Published: 01 June 2007
Fig. 1.1 Stainless steel powder shipments for North America. Source: Metal Powder Industries Federation. Reprinted with permission from MPIF, Metal Powder Industries Federation, Princeton, NJ
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Published: 01 December 2006
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in Compacting and Shaping
> Powder Metallurgy Stainless Steels<subtitle>Processing, Microstructures, and Properties</subtitle>
Published: 01 June 2007
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in History and Extractive Metallurgy[1]
> Titanium: Physical Metallurgy, Processing, and Applications
Published: 01 January 2015
Fig. 1.20 Titanium metal powder suitable for use in near-net shape manufacturing, which produces components that are close to the finished size and shape. Courtesy of J. Barnes, CSIRO, Oct 2013
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Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130395
EISBN: 978-1-62708-284-6
... analysis case hardening powder metal steel components POWDER METALLURGY (PM) technology provides a cost-effective method of producing near-net shape products, especially when a large number of the same or similar products are required. While the initial powder used is expensive compared to wrought...
Abstract
This chapter reviews failure aspects of structural ferrous powder metallurgy (PM) parts, which form the bulk of the PM industry. The focus is on conventional PM technology of parts in the density range of 6 to 7.2 g/cc. The chapter briefly introduces the processing steps that are essential to understanding failure analysis of PM parts. This is followed by a section on case hardening of PM parts. The methods used for analyzing the failures are then discussed. Some case studies are given that illustrate different failures and the methods of prevention of these failures.
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in The Metallographer and the Metallographic Laboratory
> Metallographer’s Guide: Practices and Procedures for Irons and Steels
Published: 01 March 2002
Fig. 4.13 Photo shows a thin layer of epoxy with powder metal bonded to an aluminum slug. This technique has many advantages over an all-epoxy mount.
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in Tribological Properties of Copper Alloys
> Tribomaterials: Properties and Selection for Friction, Wear, and Erosion Applications
Published: 30 April 2021
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in Forging Processes: Variables and Descriptions
> Cold and Hot Forging: Fundamentals and Applications
Published: 01 February 2005
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000039
EISBN: 978-1-62708-312-6
... Abstract This chapter discusses the methods by which stainless steel powders are shaped and compacted prior to sintering, including rigid die compaction, metal injection molding, extrusion, and hot isostatic pressing. It explains where each process is used and how processing parameters...
Abstract
This chapter discusses the methods by which stainless steel powders are shaped and compacted prior to sintering, including rigid die compaction, metal injection molding, extrusion, and hot isostatic pressing. It explains where each process is used and how processing parameters, such as temperature and pressure, and powder characteristics, such as particle size and shape, influence the quality of manufactured parts. It describes the various stages of metal powder compaction, the role of lubricants, and how to account for dimensional changes in the design of tooling and process sequences.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000223
EISBN: 978-1-62708-312-6
... Abstract This appendix is a compilation of terms and definitions associated with the processing, microstructure, and properties of powder metal stainless steels. microstructure powder metallurgy stainless steel Sources ASM Materials Engineering Dictionary , ASM International...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060085
EISBN: 978-1-62708-261-7
... the design and operation of melting furnaces as well as melting practices and the role of fluxing. It also discusses casting methods, nonferrous casting alloys, and atomization processes used to make metal powders. atomization foundry casting melting furnaces nonferrous casting alloys...
Abstract
This chapter describes the processes involved in alloy production, including melting, casting, solidification, and fabrication. It discusses the effects of alloying on solidification, the formation of solidification structures, supercooling, nucleation, and grain growth. It describes the design and operation of melting furnaces as well as melting practices and the role of fluxing. It also discusses casting methods, nonferrous casting alloys, and atomization processes used to make metal powders.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000185
EISBN: 978-1-62708-312-6
...) industry as a whole. Parallel with this shift, ferritic stainless steels now account for the major volume of sintered stainless steels. Table 11.1 is an adaptation of the summary of applications of sintered stainless steels from Powder Metal Technologies and Applications , Volume 7, ASM Handbook...
Abstract
This chapter discusses the growing use of sintered stainless steels in automotive applications and various types of filters and filtering media. It also describes how these materials are produced in the form of metal foams and cellular structures and how they serve as flake pigments in corrosion-resistant coatings.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740373
EISBN: 978-1-62708-308-9
... materials. Particle Shape Another important distinction of metal powders relates to particle shape, or more broadly, particle morphology. Particle shape is often determined by the specific manufacturing process used to produce the powder. Particle morphology greatly affects flow, apparent density...
Abstract
This chapter covers the basic steps of the powder metallurgy process, including powder manufacture, powder blending, compacting, and sintering. It identifies important powder characteristics such as particle size, size distribution, particle shape, and purity. It compares and contrasts mechanical, chemical, electrochemical, and atomizing processes used in powder production, discusses powder treatments, and describes consolidation techniques along with secondary operations used to obtain special properties or improve dimensional precision. It also discusses common defects such as ejection cracks, density variations, and microlaminations.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000023
EISBN: 978-1-62708-312-6
... Process Description Water atomization of metals is described in detail in Ref 1 . In the following, process details that differ from general water atomization of metals are highlighted as they relate to basic and engineering properties specific to stainless steel powders. Also, much finer powders...
Abstract
Stainless steel powders are usually made by water or gas atomization. This chapter describes both processes and the properties and characteristics of the powders they produce. It also discusses secondary processes, including drying, screening, annealing, and lubricating, and the effects of iron contamination on corrosion resistance.
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in Melting, Casting, and Powder Metallurgy[1]
> Titanium: Physical Metallurgy, Processing, and Applications
Published: 01 January 2015
Fig. 8.57 Schematic of the steps involved in powder injection molding, in which a polymer binder and metal powder are mixed to form the feedstock, which is molded, debound, and sintered
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