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zinc metal matrix composites

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001045
EISBN: 978-1-62708-214-3
... structure and composition are very important in dezincification. Brasses containing over 35% Zn are particularly susceptible to dezincification when exposed to an aqueous electrolyte. The zinc-rich β-phase is attacked first, and then the dezincification spreads to the α-matrix. Because dezincification...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001373
EISBN: 978-1-62708-215-0
...% other, a composition similar to CDA 377. Corrosion or Wear Deposits A polished cross section taken through a dezincified region of the first valve was examined using an EDS line scan. The scan shows a definite reduction in zinc concentration across the dealloying interface within the β phase...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
... particles, and dimpled cellular regions in the matrix. The secondary fracture surface demonstrates similar features of intergranular fracture. aircraft landing gear intergranular fracture overaging cast aluminum-zinc alloy shrinkage porosity fractographic analysis optical emission spectroscopy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001530
EISBN: 978-1-62708-225-9
.... These large sized metallic flakes are typical of severe adhesive wear situation. 10 The failed bearing caused rapid wear of the cast iron calendar roller in the form of pits as well. The presence of higher amount of zinc and nickel is expected to strenghten the matrix 6 , 9 that is reflected...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006869
EISBN: 978-1-62708-395-9
..., distribution, orientation, combination with fillers, and quality of bonding with the matrix ( Ref 4 – 7 ). The main contributor to wear behavior is the filler, which must be selected accurately in order to control the wear of the composite. In the following section, we provide a brief discussion of the effects...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
...-corrosion cracking, hydrogen embrittlement, and liquid-metal embrittlement of bolts and nuts. The article explains the most commonly used protective metal coatings for ferrous metal fasteners. Zinc, cadmium, and aluminum are commonly used for such coatings. The article also illustrates the performance...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003529
EISBN: 978-1-62708-180-1
... spectrometry, and wavelength-dispersive spectrometry. The article concludes with information on specimen handling. backscattered electron imaging economy test elemental composition analysis energy-dispersive spectrometry failure analysis metals microchemical analysis referee test specimen...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001521
EISBN: 978-1-62708-229-7
... microprobe was used to determine the composition of the gray phase. Figure 6 is a backscattered electron image (BEI) of some of the gray phase shown in Fig. 5 . The balance of Fig. 6 contains elemental X-ray maps for zinc, chlorine, and oxygen for the BEI area shown in Fig. 6 . Semi-quantitative...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046874
EISBN: 978-1-62708-229-7
... uniformly loaded, predominantly in torsion, but that the fatigue cracks had introduced stress raisers at multiple points. Chemical analysis of the metal in the spring disclosed that it was within the composition range for H21 tool steel, except that the tungsten content was 7.8% instead of the usual 9 to 10...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
.... Chemical Analysis Chemical analysis of the metal in a fractured bolt from each lot revealed the following compositions: Bolts from lot 1 conformed to specifications, but a deviation from prescribed chemical composition was found in lots 2 and 3, which also contained a sulfur addition to enhance...
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
... and grain-boundary dimple-rupture evidence. The base metal exhibited rather large-grained intergranular brittle cracking features with many types of inclusions. Chemical analysis revealed a standard high-strength, manganese bronze composition, and the weld filler metal was considered compatible. Tensile...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001059
EISBN: 978-1-62708-214-3
... of magnifications up to 120×. Replication requires a detailed surface grinding, polishing, and etching sequence before actual surface metallographic conditions can be replicated. First, the surface is ground down to bare metal with a 60-grit flap wheel; then successively smaller grits (down to 600 grit...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
... to the common structural metals and alloys. Impervious graphite, especially in heat-exchanger applications, is cathodic to the less noble metals and alloys. Carbon-filled polymers or metal-matrix composites can act as noble metals in a galvanic couple. Metal Ion Deposition Ions of a more noble metal may...
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
... exhibited rather large-grain intergranular brittle cracking features with many types of inclusions. Chemical analysis revealed a standard high-strength, manganese bronze composition, and the weld filler metal was considered compatible. Tension testing of specimens removed from gear segments remote...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... conductors as cathodes in galvanic couples. Carbon brick in vessels is strongly cathodic to the common structural metals and alloys. Impervious graphite, especially in heat-exchanger applications, is cathodic to the less noble metals and alloys. Carbon-filled polymers or metal-matrix composites can act...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
...: Inclusions G 110: Metallic inclusions G 111 (a) Metallic inclusions whose appearance, chemical analysis or structural examination show to be caused by an element foreign to the alloy Metallic inclusions G 112 (a) Metallic inclusions of the same chemical composition as the base metal...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... reactions of hydrogen with matrix or alloy elements form high-pressure pockets of gases other than molecular hydrogen. Cracking from hydride formation Transition, rare earth, alkaline-earth metals, and their alloys (includes titanium, tantalum, zirconium, uranium, and thorium) Brittle hydrides often...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
.../matrix interfaces, and it can build up pressure great enough to produce internal cracks. If these cracks are just below the surface, the hydrogen-gas pressure in the cracks can lift up and bulge out the exterior layer of the metal, so that it resembles a blister ( Fig. 7 ). The equilibrium pressure...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006939
EISBN: 978-1-62708-395-9
... with fillers such as carbon black, silica, metal oxides, and carbon and metal fibers. The addition of fillers to a polymer matrix enhances the stiffness of the material while retaining the essential attributes, such as a large strain to break and resiliency. Fillers also increase the processability, toughness...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
..., although not necessarily improper, result in similar carbide precipitation. The path of SCC in some metals is not governed completely by composition and structure of the metal but is also influenced by the environment. For example, the path of cracking in copper-zinc alloys can be made transgranular...