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aluminum-silicon eutectic system

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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.c9001029
EISBN: 978-1-62708-214-3
... of silicon particles that formed in the interdendritic aluminum-silicon eutectic, typical of A356-T61 castings. Normal amounts of shrinkage pores were also present. In summary, no microstructural anomalies were found that could be related to the observed failure. Discussion Because hot tear fractures...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... for 10 s. In Fig. 11 , it is seen that the microstructure of the cylinder head material consisted of a solid solution of aluminum-silicon (rich phase is made of aluminum) and a uniform distribution of a eutectic silicon phase and also intermetallic phases. In general, the microstructure conforms...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001599
EISBN: 978-1-62708-236-5
... ). The amount of antimony on the grain boundaries was significantly less than the amount of nickel. Aluminum, silicon, and trace amounts of chromium and oxygen were identified on the surface of the electrode. Several of the feed materials contained small amounts of sodium sulfate, which under certain conditions...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... the intended function is decreased. The article addresses factors that may cause failures in castings for each metal type, starting with gray iron and progressing to ductile iron, steel, aluminum, and copper-base alloys. It describes the general root causes of failure attributed to the casting material...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... refractories, magnesia-dolomite and alumina-based systems with carbon and graphite. Also, the roles of oxycarbides, oxynitrides, and silicon-aluminum oxynitrides, as well as metals and alloys in refractories, have been documented. These aspects are treated in the following paragraphs and sections...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... Hastelloy X nickel-base superalloy 1205 2200 1 HX (17Cr-66Ni-bal Fe) 1150 2100 1 (a) Seamless tube. (b) Electric resistance welded tube Iron oxides alone are not protective above 550 °C (1020 °F) ( Ref 5 ). Chromium, aluminum, and/or silicon assist in forming scales, which...
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
... 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 molds...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... without excessive scaling. Chromium, aluminum, and silicon assist in forming more protective scales, which permit operating at higher temperatures ( Ref 4 ). Chromium oxide is stable up to 985 °C (1800 °F), above which the oxide volatizes to gaseous CrO 3 . Suggested maximum operating temperatures...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
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
... of the material. For example, Fig. 11(a) reveals a dimpled surface of ductile features typical of fcc metals such as austenitic steel, while Fig. 11(b) is a SEM image of an aluminum alloy where various fracture morphologies are revealed. This is typical of many alloy systems where rapid fracture exhibits...
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 Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... Scanning electron microscopy images of intergranular fracture with different grain morphologies. (a) Rock candy appearance from atmospheric stress-corrosion cracking of a high-strength aluminum alloy with equiaxed grains. Original magnification: 130×. (b) Intergranular fracture along the part line...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
... Trans. , Vol 29 ( No. 4 ), 1985 , p 473 – 480 36. Okada T. and Hattori S. , Cavitation-Erosion of Aluminium Oxide and Silicon Carbide , JSME Int. J. , Vol 33 ( No. 3 ), 1990 , p 382 – 387 37. Okada T. , Cavitation Erosion of Ceramics , Jpn. J. Tribol. , Vol 41...
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
... magnifications of 500×. Courtesy of Mohan Chaudhari, Columbus Metallurgical Services Fig. 2 SEM images of intergranular fracture with different grain morphologies. (a) Rock candy appearance from atmospheric stress-corrosion cracking of a high-strength aluminum alloy with equiaxed grains. 130×. (b...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
...). Source: Ref 30 There is also a particle size 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...
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 Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... have been a result of process upsets related to combustion and cooling systems. The combustion system is designed to produce a flame of a particular size, location, and temperature distribution. Several factors, including the composition of the fuel, geometry/degradation of the burner orifices...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... ridges in stage II. The plateaus are usually normal to the direction of maximum tensile stress ( Fig. 13a ). A transition from stage I to stage II in a coarse-grain specimen of aluminum alloy 2024-T3 is shown in Fig. 13(b) . The presence of inclusions rich in iron and silicon did not affect the fracture...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... environmental conditions, typically 5 × 10 6 for steels and ≥10 7 for aluminum alloys, provides a useful and beneficial result of S - N testing. However, other materials do not always exhibit this infinite-life response. Instead, many materials display a continuously decreasing stress-life response, even...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006836
EISBN: 978-1-62708-329-4
... the location of a fatigue crack on the cross section of a spring that initiated approximately 1 mm subsurface due to a large inclusion particle. Figure 2(b) shows the fracture with SEM imaging. The EDS mapping scans in Fig. 3 reveal that the inclusion is rich in aluminum and magnesium. This particular coil...