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melt-spun amorphous alloys

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Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003836
EISBN: 978-1-62708-183-2
... potentials were different on different sides of a melt-spun ribbon ( Ref 100 , Ref 101 , Ref 102 ). Sputtered alloys did not suffer pitting under conditions in which melt-spun alloys of the same composition did ( Ref 102 ). As discussed previously, amorphous chromium-zirconium alloys are quite...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001089
EISBN: 978-1-62708-162-7
... resistance in an aqueous saline solution. Also an Mg-Y-Nd-Zr alloy was shown to have good corrosion resistance, good castability, and stability to 300 °C (570 °F). Some of the commercial alloys are listed in Table 2 . Recently, just as with aluminum (see below), it has been discovered that a melt-spun...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003724
EISBN: 978-1-62708-177-1
... phase can be understood by a careful examination of the kinetics of the competitive nucleation and growth of the intermetallic and α-aluminum solid solution ( Ref 16 ). Fig. 33 Globular structure of α-aluminum in a melt-spun Al-12%Mn alloy. Small particles of a different phase decorate the cell...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003043
EISBN: 978-1-62708-200-6
... of the high-temperature thermoplastic used in the composite matrix, to allow users to melt and bond the analog without melting the composite. This Thermabond process ( Ref 6 ) uses PEEK composites that are first coated with PEI film during part consolidation, prior to joining. Because the amorphous PEI has...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003009
EISBN: 978-1-62708-200-6
... thermoplastic techniques can be used. However, except for PVDF, which can be processed in ordinary extruders, only highly corrosion-resistant alloys should be used in contact with the melt during processing. Table 3 gives the values for thermal, mechanical, and electrical properties, as well as general...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003023
EISBN: 978-1-62708-200-6
... , the modulus continues to drop until the physical integrity of the polymer is lost (a melting process for semicrystalline polymers; complete liquidlike flow above T g for linear, amorphous polymers; or rubberlike behavior for cross-linked systems). This region of behavior above the transition is called...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001079
EISBN: 978-1-62708-162-7
...Abstract Abstract All refractory metals, except osmium and iridium, have the highest melting temperatures and lowest vapor pressures of all metals. This article discusses the commercial applications, and production procedures of refractory metals and alloys. These procedures include fabrication...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001049
EISBN: 978-1-62708-161-0
..., microstructure, consolidation method, mechanical properties and surface stability of wrought nickel alloys. Vacuum melting processes are a necessity for many nickel- and iron-nickel-base alloys because of the presence of aluminum and titanium as solutes. Cobalt-base alloys do not usually contain these elements...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005255
EISBN: 978-1-62708-187-0
... 3 ), have been suggested for use with reactive alloys. Still other materials have been proposed for specific purposes. These specialized applications are summarized in Ref 61 . Silica Silica is generally used in the form of silica glass (fused silica), which is made by melting natural quartz...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006057
EISBN: 978-1-62708-175-7
... powder with iron powder. When sintered at a temperature of 1050 °C (1920 °F), the phosphorus iron intermetallic compounds melt and diffuse into the iron, forming a solid solution of phosphorus in iron ( Fig. 3 ). The transient liquid phase enhances diffusion rates and assists in the rearrangement...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003005
EISBN: 978-1-62708-200-6
... methods to produce the desired shape, it follows that the choice of possible materials is restricted to the lower-melting-point metals and melt-processable thermoplastics. The type of material considered also influences design decisions. Details of design will differ between, for example, metals...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003357
EISBN: 978-1-62708-195-5
... by drying) and heat treated to convert the gelled precursor to ceramic. In the case of fibers based on SiC and silicon nitride, fibers are spun from organometallic “preceramic” polymer precursors, followed by cross- linking (curing) and heat treatment steps to convert the fibers to ceramic materials ( Ref 5...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001064
EISBN: 978-1-62708-162-7
..., ball milling) to modify powder shape and size or to introduce strengthening features, or comminution such as that used to cut melt-spun ribbon into powder flakes for subsequent handling. Aluminum has a high affinity for moisture, and aluminum powders readily adsorb water. The elevated temperatures...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.9781627082907
EISBN: 978-1-62708-290-7
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003820
EISBN: 978-1-62708-183-2
... 6 in the ambient atmosphere is particularly effective in suppressing high-temperature oxidation up to and including the temperature at which the alloy normally ignites. The oxidation rate of magnesium in oxygen increases with temperature. At elevated temperature (approaching melting...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003033
EISBN: 978-1-62708-200-6
... processes are used to manufacture continuous glass filaments: marble melt and direct melt. In the marble melt process, glass marbles are first produced by melting the appropriate mixture of raw materials and forming marbles, which are usually 2 to 3 cm (0.8 to 1.2 in.) in diameter. These marbles...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.9781627081627
EISBN: 978-1-62708-162-7
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
... that consists of a skeleton of a high-melting-temperature phase in a matrix of a solidified liquid—for example, W-Ni-Fe heavy alloys, WC-Co cemented carbides. Hot pressing is performed in a rigid die using uniaxially applied pressure: it is a low-strain-rate process. Graphite dies may be used, in which case...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.9781627081993
EISBN: 978-1-62708-199-3
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... be converted into boron nitride fibers ( Ref 31 , 32 ). Melt-spun boric oxide precursor fiber is nitrided with ammonia, followed by a high-temperature treatment that removes the traces of oxide and stabilizes the product. Boron carbide is also a light and strong material. It can be prepared by reacting...