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high-density powder metallurgy

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
... to eliminate flash formation and achieve net shapes. Thus, parts containing through holes and complex configurations can be manufactured with little or no material loss due to trimming, hole punching, machining, or grinding. Powder forging is used to obtain higher density in P/M parts for high-stress...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003119
EISBN: 978-1-62708-199-3
... Abstract Stainless steel powder metallurgy (P/M) parts represent an important and growing segment of the P/M industry. This article describes the processing, properties, and composition of medium-density and high-density P/M stainless steels. Medium-density materials are processed by pressing...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006142
EISBN: 978-1-62708-175-7
... components, cutting tools, high performance magnets, automotive connecting rods, armor piercing projectiles, and artificial prosthetic joints ( Ref 1 ). Fig. 1 Three of the variables that influence the selection of a powder metallurgy processing method: component size, density, and performance...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006045
EISBN: 978-1-62708-175-7
... by low-cost conventional powder metallurgy processes such as die pressing or cold isostatic pressing (CIP), or by direct powder rolling (DPR). These techniques provide high productivity, high strength of green parts, and the capability to produce different sizes and shapes. Fig. 1 Processing steps...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006083
EISBN: 978-1-62708-175-7
... , 1994 , p 73 – 89 5. Falleur G. and Hamilton J. , “Development of High-Density PM Processes for High Performance Applications,” presented at SIP 3, Technologies for PM Growth Part 4, 2013 International Conference on Powder Metallurgy and Particulate Materials (PM 2013) , June 24...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006022
EISBN: 978-1-62708-175-7
... , compiled by Carlson E.A. and Gaines G. , Metal Powder Industries Federation , Princeton, NJ , p 305 – 320 10. Rutz H.G. and Hanejko F.G. , High Density Processing of High Performance Ferrous Materials , Advances in Powder Metallurgy & Particulate Materials—1994...
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
.... et al. , The Mechanism of Sintering High Speed Steel to Full Density , Modern Developments in Powder Metallurgy , Vol 13 , Metal Powder Industries Federation , 1981 , p 71 15. Bee J.V. et al. , Phase Distributions during the Sintering of High Speed Steel Powders , Progress...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006105
EISBN: 978-1-62708-175-7
... content, and checking and correcting belt speed. Re-pressing and Re-sintering of Copper Powder Metallurgy Parts Final part density is frequently a key design criterion for copper PM parts. For example, high conductivity requires high part density. To take advantage of the ductile nature of copper...
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
..., electrochemical, atomizing, oxide reduction, and thermal decomposition processes. It also covers the consolidation of powders by pressing and sintering, as well as by high density methods. Further emphasis is provided on the distinguishing features of powders, their manufacturing processes, compacting processes...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001083
EISBN: 978-1-62708-162-7
... the combination of low density, high mechanical performance, and excellent corrosion resistance, the high cost of titanium alloys made them a design choice only when lower-cost alloys could not be used. The drive to develop net-shape technologies, such as casting and powder metallurgy (P/M), has been going...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006118
EISBN: 978-1-62708-175-7
... exhaust applications are sintered at a high temperature in a 100% hydrogen atmosphere. Since reduction of carbon via reaction with the oxygen present in the powder is rapid at high temperatures, significant reduction is achieved in carbon content. High-density PM ferritic components, with their very low...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006114
EISBN: 978-1-62708-175-7
... such as engine lubrication and automatic transmissions. For higher stress applications up to 20 MPa (3 ksi), alloy steels at the minimum density of 7.1 g/cm 3 are used. Powder metallurgy material requirements for pump gear applications at various stress levels are given in Table 1 . Material requirements...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006445
EISBN: 978-1-62708-190-0
... Abstract The potential for introducing defects during processing becomes greater as the relative density of pressed and sintered powder metallurgy (PM) parts increases and more multilevel parts with complex geometric shapes are produced. This article discusses the potential defects in pressed...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005971
EISBN: 978-1-62708-168-9
.... Powder metallurgy steel parts can be quenched and tempered to achieve high strength or hardness as required. However, the hardenability of steels depends in part on part density because thermal conductivity of the metals is affected by the density. In addition, homogeneity of parts made of mixed powders...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006124
EISBN: 978-1-62708-175-7
...-purified material are now standard practice. Although few niobium products are made by powder metallurgy, niobium powders produced by the hydride/dehydride process can be cold isostatically pressed and directly sintered to near full density in high vacuum ( Ref 21 ). They can also be injection molded...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006108
EISBN: 978-1-62708-175-7
... and windage baf e assembly. Brace rails are an intermediate-density powder metallurgy spur FN-0208 joined to AISI 1010 steel stamping. High-speed pulse weld assembly replaced an aluminum gear to a low-carbon wrought steel stamping forging and reduced overall cost by 40%. Courtesy of Process Equipment Company...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006066
EISBN: 978-1-62708-175-7
... Abstract Stainless steels are highly alloyed materials in comparison to most other popular powder metallurgy (PM) materials, such as low-alloy steels, copper alloys, and aluminum alloys. This article provides an overview of the history of PM stainless steels. aluminum alloys copper...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006120
EISBN: 978-1-62708-175-7
... to be inferior to those of their high-temperature-sintered counterparts in the cases of both 409L and 434L. These examples illustrate the significant influence of sintering temperature on the ductility, impact energy, and microstructure of the sintered material. Mechanical properties of 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
... relatively lower compacting pressures to arrive at a targeted green density, but these may not develop high enough green strength for trouble-free handling of green compacts. Fine powder particles require greater compacting pressures because of the higher rate of work hardening resulting from the deformation...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006136
EISBN: 978-1-62708-175-7
... sheet and Ti-6Al-4V sheet were produced by compacting powder continuously in the nip between two rolls. Through the development of a feed hopper and an edge control system, sheet with high green strength and green density in excess of 90% of theoretical density was produced ( Ref 7 , 8 ). The green...