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brittle matrix-ductile phase composites

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002379
EISBN: 978-1-62708-193-1
... such as brittle matrix-ductile phase composites and metal-matrix composites. It also lists the effects of microstructural variables on fracture toughness of steels, aluminum alloys, and titanium alloys. Selected References Basic Fracture Principles • Broek D. , Elementary Engineering Fracture...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002418
EISBN: 978-1-62708-193-1
... The calculated notch sensitivity for a material with long, brittle reinforcements that may fracture as the crack extends Fig. 10 The notch insensitivity found experimentally for ceramic-matrix composites caused by stress redistribution Fig. 11 Basic cell model (hysteresis loops) used...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003246
EISBN: 978-1-62708-199-3
... documents several names for the same constituent, which can lead to some confusion. If only matrix phases are considered (i.e., if very small amounts of carbides, inclusions, or nitrides are ignored), the only single-phase ferrous metals or alloys are those consisting solely of ferrite, austenite...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003246
EISBN: 978-1-62708-199-3
... 57–73). The literature documents several names for the same constituent, which can lead to some confusion. If only matrix phases are considered (i.e., if very small amounts of carbides, inclusions, or nitrides are ignored), the only single-phase ferrous metals or alloys are those consisting...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... of the remaining cracking through the lamellar pearlite was very brittle. Although the ferrite phase was not predominant in the matrix, it imparted substantial ductile behavior. Fig. 8 Crack in a high-strength ductile iron (grade 100-70-03) impeller showing deformation in the ferrite, resulting in blunting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... through the lamellar pearlite was very brittle. Although the ferrite phase was not predominant in the matrix, substantial ductile character was imparted. Fig. 8 Crack in a high-strength ductile iron (grade 100-70-03) impeller showing deformation in the ferrite resulting in blunting...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003254
EISBN: 978-1-62708-176-4
... for fracture (e.g., the grain size or the mean spacing of second-phase particles) ( Ref 32 , 33 ). An example of this type of fracture process can be seen in the case of metal matrix composites (i.e., a ductile metal matrix with brittle reinforcement particles). Crack growth in such a material...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002417
EISBN: 978-1-62708-193-1
... micromechanisms that may occur during cyclic fatigue crack growth in ceramics and ceramic-matrix composites. Source: Advanced Materials & Processes , Aug 1993 Fig. 1 Variation of fatigue crack propagation rate, da / dN , with applied stress intensity range. Δ K , for MgO-PSZ ceramic, tested...
Book Chapter

By Dongyang Li
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006382
EISBN: 978-1-62708-192-4
... a loaded polymer sample fails, or its thermal endurance. Wear resistance of polymeric materials could be considerably enhanced by filling with reinforcing phases, such as glass fibers, metallic particles, nanotubes, and whiskers. Such formed polymeric-matrix composites and nanocomposites exhibit low...
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
... and/or physical properties of composites are usually an average of the strengths and/or properties of the individual constituents/phases. Most composites are composed of a compliant, damage-tolerant matrix and a strong reinforcing phase/constituent, usually filaments, fibers, or whiskers, that are too brittle...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002349
EISBN: 978-1-62708-193-1
..., Gerberich ( Ref 16 ) reiterates the importance of both composition and microstructural effects on the toughness of Ti-6Al-4V. For example, he points out that the alpha platelets in the alpha + beta Widmanstätten matrix may be either detrimental or beneficial, depending on the oxygen content. However...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006433
EISBN: 978-1-62708-192-4
... particle. The article summarizes the erosion characteristics of polymer matrix composites (PMCs), metal matrix composites (MMCs), ceramic matrix composites (CMCs), and erosion-resistant coatings. The combination of parameters included in most erosion models is also summarized. ceramic matrix...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006125
EISBN: 978-1-62708-175-7
... With the exception of some specialty ordnance alloys, all commercial WHAs are two phase metal/metal matrix composites in which the tungsten phase is almost always present in a spheroidized form for maximum part ductility/durability. WHAs are true composites in that their key properties are derived from...
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006228
EISBN: 978-1-62708-163-4
... plastic deformation in a ferrite-pearlite steel is controlled by the ferrite matrix, which is generally the continuous matrix phase in the microstructure. , pearlite plays only a minor role in yielding behavior. Ductility, as represented by reduction in area, steadily decreases with increasing carbon...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002352
EISBN: 978-1-62708-193-1
... direction. Feather marks exist between steps. Fig. 7 Effect of atmospheric pressure on fracture of a discontinuously reinforced aluminum metal-matrix composite. Fractured tensile specimens at (a) 0.1 MPa and (b) 300 MPa and respective fracture surfaces. The increased reduction of area in the high...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006323
EISBN: 978-1-62708-179-5
... with the intrinsic difficulty in the analysis of the fracture morphology, which is typically generated on a metallic matrix that may be composed of various phases and that include free graphite precipitates of different size and morphology. This analysis can be further complicated by the usual heterogeneities...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001241
EISBN: 978-1-62708-170-2
... of the cutting tool. Hence, positive-rake tools of small nose radius are required for machining aluminum, brass, and so forth. The long, stringy chips produced in ductile materials often lead to extensive sliding that results in erosion or wear of the cutting tool or bond matrix (in the case of abrasive...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005970
EISBN: 978-1-62708-168-9
... or (2) strength and oxidation resistance in high-temperature service. Besides the flake or nodular form of graphite, the types of matrix microstructures and applications include: Matrix microstructure Composition Application Ferritic 5% Si iron (Silal) Heat resistant Ferritic High (15...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002460
EISBN: 978-1-62708-194-8
... strength. (c) Bakelite (a thermosetting polymer) and Lucite (a thermoplastic) are not as “brittle” as Al 2 O 3 and silica glass, but they are not malleable materials at room temperature. (Bakelite is never so, but Lucite becomes ductile at a temperature above room temperature.) Source: Ref 4 Fig...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... is reportedly from a high-purity aluminum-copper precipitation-hardening alloy with a coarse grain structure. In this example (with the coarse grain size), ductility is limited, and the local yield strength in the grain boundary becomes lower than the matrix; thus, fracture develops first within the grain...