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intermetallic constituent particles

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003618
EISBN: 978-1-62708-182-5
... aluminum alloys intermetallic constituent particles trace impurity elements pitting corrosion solid solution aluminum THE METALLURGICAL EFFECTS on corrosion of aluminum can be classified into two categories. In the first category are effects from insoluble, intermetallic constituent particles...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004001
EISBN: 978-1-62708-185-6
... pressing and hot isostatic pressing have also been used to consolidate FeAl powders, but these operations provide insufficient deformation to breakup oxides at prior particle boundaries. The nickel aluminide Ni 3 Al is probably the intermetallic closest to full-scale commercialization after Fe 3 Al. Ni 3...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003246
EISBN: 978-1-62708-199-3
... carbides, graphite, martensite, and a variety of intermetallic phases, nitrides, and nonmetallic inclusions. The article further describes the two-phase constituents including, tempered martensite, pearlite, and bainite and nonmetallic inclusions in steel that consist of two or more phases. common...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003164
EISBN: 978-1-62708-199-3
... its excellent strength and oxidation resistance at elevated temperatures (see Table 2 ). This intermetallic has long been used as a strengthening constituent in high-temperature, nickel-base superalloys, which owe their outstanding strength properties to a fine dispersion of precipitation particles...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001102
EISBN: 978-1-62708-162-7
... processes at elevated temperatures ( Ref 1 , 2 , 3 , 4 , 22 , 23 , 24 ). However, because of the brittleness problem, the intermetallics have been used mainly as strengthening constituents in structural materials. For example, high-temperature nickel-base superalloys owe their oustanding strength...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006287
EISBN: 978-1-62708-169-6
... either intermetallic compounds or metal crystals that form during solidification of hypoeutectic alloys. Constituent particles are phases that form by a liquid-solid eutectic reaction during solidification and that may transform further during subsequent higher-temperature heat treatments, for example...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003837
EISBN: 978-1-62708-183-2
... corrosion of an intermetallic phase different from that of a homogeneous alloy or of the constituents in pure elemental form. Thermodynamic principles in the context of high-temperature corrosion, information on oxidation, sulfidation, hot corrosion of NiAl-, FeAl-, and TiAl-based intermetallics, and...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003255
EISBN: 978-1-62708-176-4
... during tensile or shear loading. In some cases, intermetallic compounds can form within alloys. These materials are composed of two or more metallic or metalloid constituents and exhibit crystal structures that are distinctly different from its constituents. Unlike solid solution alloys, these mixtures...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006684
EISBN: 978-1-62708-213-6
... seen in bright field and with DIC. Nomarski DIC also reveals many small beads of water on the surface that were not visible in bright field. A continuously cast specimen of aluminum alloy 3004 etched using Keller’s reagent is shown in Fig. 36 . Bright field reveals only intermetallic particles and...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003839
EISBN: 978-1-62708-183-2
... (such as carbon or boron), or ceramic (such as silicon carbide or alumina). The purpose for reinforcing metals with fibers or particles is to create composites that have properties more useful than that of the individual constituents. For example, fibers and particles are used in MMCs to increase...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003769
EISBN: 978-1-62708-177-1
... cubic (fcc) lattice. In this alloying region, the terminal (room-temperature) solid-state condition is essentially a monophase structure ( Fig. 4 ). The solid-state region below the solvus line, where dispersed particles of the θ (Al 2 Cu) intermetallic precipitate in a supersaturated aluminum-copper...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006503
EISBN: 978-1-62708-207-5
... chromium, and combinations thereof. The presence of nano-sized intermetallic particles formed by these elements and fibrous silicon constituents and precipitation in the solid state can also increase strength and hardness. Typical precipitates include manganese particles (Al 6 (Mn-Cr-Fe), Mg 3 (Mn-Cr) 2 Al...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003737
EISBN: 978-1-62708-177-1
... second-phase constituents. Extended electropolishing should be avoided. This procedure has been promoted for scanning electron microscopy examination of second-phase particles in superalloys, because they stand above the matrix, and their shape can be easily assessed. However, such an image is unsuitable...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003761
EISBN: 978-1-62708-177-1
...-phase and steels. Islands of martensite can be seen in the dual-phase steel microstructure in Fig. 10 . Special etchants are required to distinguish these martensite islands from cementite particles, pearlite patches, and retained austenite. In this particular microstructure, the martensite constituent...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003371
EISBN: 978-1-62708-195-5
... most of the aluminum alloys to preserve ductility and toughness, because these elements form large intermetallic particles, which can cause the nucleation of voids by debonding or cracking. This concern is particularly important for MMC applications, because the ductility and toughness of MMCs are...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003350
EISBN: 978-1-62708-195-5
... Abstract This article begins with a brief history of composite materials and discusses its characteristics. It presents an introduction to the constituents, product forms, and fabrications processes of composite materials. The article concludes with a discussion on the applications of organic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003090
EISBN: 978-1-62708-199-3
... where a hard constituent is embedded into a soft-ductile constituent. This means that the hard cementite plates do not abrade away as easily as the rounded cementite particles found in other steel microstructures, that is, tempered martensite and bainite, which is discussed later. Wear resistance of a...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001081
EISBN: 978-1-62708-162-7
... the typical applications of various titanium-base materials, and explains the crystal structure, effect of impurities, and microstructural constituents of titanium alloys. The Article provides a brief description on the processing of wrought titanium alloys, including primary fabrication in which...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003764
EISBN: 978-1-62708-177-1
... microstructure etchants for common phases and constituents in ferrous materials. attack-polishing solutions chemical-polishing solutions chemicals etchant designation iron macrostructure etchants microstructure etchants non-ferrous materials steel Table 1 List of chemicals Before using any...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001101
EISBN: 978-1-62708-162-7
... an overview of the status of MMCs, and provides information on physical and mechanical properties, processing methods, distinctive features, and various types of continuously and discontinuously reinforced aluminum, magnesium, titanium, copper, superalloy, and intermetallic-matrix composites. It...