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cast aluminum matrix composites

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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
.... The chemical composition of the sand-cast component was identified via optical emission spectroscopy and is comparable to an aluminum sand-cast alloy, AA 712.0. Metallographic evaluation via optical microscopy and scanning electron microscopy revealed a high degree of porosity in the microstructure as well...
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
... casting. Cast iron, gray cast iron, malleable irons, ductile iron, low-alloy steel castings, austenitic steels, corrosion-resistant castings, and cast aluminum alloys are the materials discussed. The article describes the general types of discontinuities or imperfections for traditional casting with sand...
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
.... The cast aluminum alloy fracture surface should show dimples in the aluminum matrix (original dendrites), but they can be difficult to see because fracture-surface morphology is impacted by cleavage in second-phase (silicon) particles and other second phases. Fig. 1 Scanning electron microscopy...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001120
EISBN: 978-1-62708-214-3
...Abstract Abstract A segment from a premium-quality H13 tool steel die for die casting of aluminum failed after only 700 shots. The segment was subjected to visual, macroscopic, hardness, and metallographic testing. The investigation revealed that failure occurred as a result of fatigue...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001303
EISBN: 978-1-62708-215-0
... are either through a plate or at the interface between a plate and the aluminum matrix. Also, several incipient cracks are associated with plates. Results of chemical analysis Table 1 Results of chemical analysis Element Composition, % Sample from sprocket wheel Aluminum alloy LM6M...
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
... manner, but not exhibit the classical dimple-rupture morphology, as shown in Fig. 1(d) for a cast aluminum alloy. The cast aluminum alloy fracture surface should show dimples in the aluminum matrix (original dendrites), but can be difficult to see because fracture surface morphology is impacted...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001050
EISBN: 978-1-62708-214-3
... microstructure of the sample presented in Fig. 6 consisted of graphite flakes in an iron matrix, typical of gray cast iron. Etching in 2% nital revealed a bainite matrix with scattered massive carbides ( Fig. 7 ). Fig. 6 Micrograph showing graphite flakes characteristic of gray cast iron. Unetched. 64...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003536
EISBN: 978-1-62708-180-1
... surface of a metal-matrix composite containing alumina fibers distributed in the matrix of an aluminum alloy. (b) Fracture profile generated from the fracture surface of a tensile test specimen of low-alloy steel. (c) A high magnification field of view of the fracture profile in (b) Fig. 3...
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
... mode image. (a) Secondary electron imaging mode where particles are not distinguished by composition. (b) Image from backscatter mode, which shows the lower atomic number particles (in this case aluminum 1, 2, 3, 4, 5, 6, and 8) as darker than the iron particles (3A and 7). Note also that the fibers...
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
... 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 in the increased microhardness of the matrix of the failed sample. However, evidently the effect of this strengthening did...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001681
EISBN: 978-1-62708-234-1
..., but no σ particles were found. Instead, extracted particles from the matrix were rich in Cr and S ( Fig. 12 ), probably Cr sulfides, or Al, O and Si ( Figs. 12 , 13 , 14 ), probably Al 2 O 3 or silicates. The latter may have been present in the as-cast material, but the sulfides formed during service...
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
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... polymers or metal-matrix composites can act as noble metals in a galvanic couple. Metal Ion Deposition Ions of a more noble metal may be reduced on the surface of a more active metal, for example, copper on aluminum or steel, or silver on copper. This process is also known as cementation, especially...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
... ) in aqueous environments, including sodium chloride (NaCl) solutions can be a complex process that varies with alloy composition. However, grain-boundary precipitation has been identified as a contributing factor in the IGSCC of aluminum alloys; galvanic effects between the precipitates and matrix...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001781
EISBN: 978-1-62708-241-9
...% of the composition are listed in Table 1 . Based on the subject and exemplar golf club hosels’ elemental composition, the material closely resembles A360 cast aluminum. The composition of A360.0 cast aluminum alloy [ 15 ] for comparison is listed in Table 1 as well. From the compression test data, the stress...
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
.... The incidence of such cracking has been shown to increase with increases in aluminum and nitrogen contents and with slower cooling rates after casting. The minimum amount of AlN required to produce IG fracture is lower for alloy steels than for plain carbon steels (0.002 versus 0.004%) ( Ref 22...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001638
EISBN: 978-1-62708-228-0
... line were vertical and, in some cases, undercut. Requirements for Chemical Composition of UNS N08810 and Results Obtained for the Transfer Line Table 1 Requirements for Chemical Composition of UNS N08810 and Results Obtained for the Transfer Line Element N08810 Transfer line...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... visually or under low magnification are then described. Typical microscopic features observed on structural metals are presented subsequently, followed by a brief discussion on fatigue in polymers and polymer-matrix composites. References References 1. Stephens R. , Fatemi...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... distribution in high-strength age-hardening aluminum alloys, but different behavior in an aluminum casting alloy has been reported ( Ref 31 ). The iron- and/or silicon-rich phases are the inclusions that are smaller than other phases created by solute additions for age-hardening response. In this case...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001600
EISBN: 978-1-62708-217-4
... sites. A sample of the second source main support bridge was analyzed for elemental composition and compared to the nominal composition of 7075 aluminum. DC plasma emission spectroscopy was employed utilizing Beckman SSVI equipment. The sample compared favorably with the typical composition of 7075...