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prealloyed bronze

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Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006106
EISBN: 978-1-62708-175-7
... on the powder properties of bronze and brass and the roles of lubricant and compaction dies in the pressing process. It discusses the structural defects that originate during the compaction process. The article also describes the major factors that influence the sintering response in bronze, prealloyed bronze...
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
... that occur in the surface chemistry and structure of the powders manifest during part production as processing differences between the two types of powders. Prealloyed Bronze Powders Prealloyed bronze powders are made commercially by water atomizing. Application is more extensive in Europe, where 90...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003135
EISBN: 978-1-62708-199-3
...-lead and steel-backed copper-lead-tin materials, used to replace solid bronze bearings, also use preblended powders because lead is virtually insoluble in copper and cannot be prealloyed. Friction materials used in brakes and clutches contain disparate materials such as copper with several other...
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
... mechanical strength ( Ref 9 ). Bearings can be produced from preblended elemental powder mixes or prealloyed powders. These 89/11 or 90/10 bronze powders can be produced by any of three main processes. Gas or air atomization of prealloyed bronze yields fine, spherical particles that can be processed to low...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001070
EISBN: 978-1-62708-162-7
... at the expense of some loss in performance. Although bronze bearings can be produced from partially or fully prealloyed powders, they are predominantly made from elemental powder blends. The tin powders used in these blends are typically made by air atomization. Compaction pressures range from about 10...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003789
EISBN: 978-1-62708-177-1
.... The P/M steels are generally low in manganese. When the low alloys are prepared as elemental mixes with nickel and carbon, hardenability is lower than for fully dense, homogeneous low-alloy steels. Hardenability is not a problem in the fully dense prealloyed steels fabricated by forging or metal...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006138
EISBN: 978-1-62708-175-7
... as a hardener in the copper, making bronze stronger and harder when compared to pure copper. Bronze powders are commonly supplied in three different forms: fully prealloyed, partially alloyed, and premixed. Each material has distinct properties. These differences assist in choosing the powder type depending...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005903
EISBN: 978-1-62708-167-2
... as prealloys are used in the treatment. The pure magnesium treatment involves two stages: the melt is firstly desulfurized and then treated with magnesium. A storage phase can be deployed in between. As shown in the diagram ( Fig. 18 ), CaC 2 on the basis of calcium carbide is the agent generally used...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006116
EISBN: 978-1-62708-175-7
..., the hardenability is variable on a local scale, where the regions containing the highest additive content have the highest hardenability. Fig. 1 Hybrid alloy using a prealloyed low-alloy steel base containing (wt%) 0.4 Mn, 1.25 Mo, and 1.4 Ni with 1 wt% elemental Cu plus 0.7 wt% graphite additions (FLC-4805...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006018
EISBN: 978-1-62708-175-7
..., aluminum, tungsten, molybdenum, selenium, tellurium Agriculture  Animal feed Iron  Animal medication Cobalt  Chelate fertilizers Iron  Farm machinery Iron, steel, copper, bronze  Food enrichment Iron, copper, manganese  Fungicides Copper  Lawn and garden equipment Iron, steel...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006019
EISBN: 978-1-62708-175-7
... Copper CT Bronze CNZ Nickel-silver CZ Brass F Iron FC Copper steel FD Diffusion-alloyed steel (iron base) FF Soft-magnetic iron FL Prealloyed ferrous material (except stainless steel) FLD Diffusion-alloyed steel (prealloyed base) FN Nickel steel FS Iron silicon...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006111
EISBN: 978-1-62708-175-7
..., prealloyed, and diffusion alloyed) also influence sintering practices. Table 1 lists typical sintering temperatures for various PM materials and ceramics. Sintering is generally performed at temperatures approximately 2 3 to 4 5 of the absolute melting point or solidus...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003175
EISBN: 978-1-62708-199-3
...), and electric resistance and electric radiation furnaces. The nature of the furnace charge may range from prealloyed ingot of high quality to charges made up exclusively from low-grade scrap. However, even under optimum melting pouring conditions, molten aluminum is susceptible to three types of degradation...
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
... like tungsten and molybdenum were formed by P/M processing into articles for the electrical industry. Powder metallurgy processing was also used for the manufacture of composite electrical contacts. Cemented carbides and porous bronze bearings followed in the 1920s, friction materials in the 1930s...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003773
EISBN: 978-1-62708-177-1
... by a layer of alloyed silver. Sintered Liners Sintered liners for sleeve bearings are made from prealloyed powders of copper-lead alloys or high-leaded tin bronzes by spreading the powder uniformly on a continuously moving steel strip that passes through a sintering furnace with a reducing atmosphere...
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
...Abstract Abstract Atomization is the dominant method for producing metal and prealloyed powders from aluminum, brass, iron, low-alloy steels, stainless steels, tool steels, superalloys, titanium alloys, and other alloys. The general types of atomization processes encompass a number...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002193
EISBN: 978-1-62708-188-7
... adjustments in cutting conditions and tool geometry and the selection of proper tooling materials. Microstructural changes seldom can be made to improve machinability without introducing some significant negative influence on mechanical and physical properties. Materials prealloyed with manganese sulfide...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006032
EISBN: 978-1-62708-175-7
... produce only small reductions in the compressibility of prealloyed steel powders, while significantly higher compaction pressures are required for chromium, copper, and manganese. The reduction in compressibility from chromium and manganese is attributed not only to solid-solution strengthening, but also...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006122
EISBN: 978-1-62708-175-7
... may also be added in prealloyed form, where nickel is melted with iron prior to atomization. However, there is a limit as to how much nickel can be prealloyed before the compressibility and green strength of the iron powder compact are significantly affected. In practice, prealloyed nickel content...
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
...; a number of alloyed steels and stainless steels require this. Letter codes used in this designation system are: A Aluminum C Copper CT Bronze CNZ Nickelsilver CZ Brass F Iron FC Iron-copper or copper-steel FD Diffusion-alloyed steel FL Prealloyed ferrous (not SS...