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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
... intermetallic 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...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001489
EISBN: 978-1-62708-217-4
... concentration of any element, probably due to the enhanced matrix effect when analyzing smaller size inclusions in the “cups” of fracture surface. On the fracture surfaces of sample B, chromium, manganese, and sulfur were found to be present in almost all the inclusions. In both the rings, the composition...
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 Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001787
EISBN: 978-1-62708-241-9
... and location of the inclusions influence the material fatigue life. The inclusions with small size in the material surface obviously reduce the fatigue life. The inclusions in the matrix with large size will exert relatively small influence on the fatigue life [ 13 ]. The oxide inclusion, sulfide inclusion...
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: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001813
EISBN: 978-1-62708-241-9
... graphitization in different ways: by affecting the stability of the M x C y carbides; by interfering with the diffusion of the carbon in the matrix; or by acting as preferential sites for nucleation. The temperature and the stoichiometric of the carbide composition are the variables that control...
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 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 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: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001339
EISBN: 978-1-62708-215-0
... plant shutdown. However, this effort was not successful, and a leak was detected in the piping within 12 h after the piping exceeded the −40 °C (−40 °F) temperature. Aluminum alloy 5083-O was the specified seamless pipe composition, and the weld filler metal was 5183. The ASTM designation...
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
... Steels subject to combined high-temperature and high-pressure hydrogen. Also affects copper Irreversible chemical 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...
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
.... (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 of an aluminum forging Fig. 5 Tensile test fracture surface of a high-purity, coarse-grained Al...
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.a0003551
EISBN: 978-1-62708-180-1
... and the highest reactivity. In general, the dissolution of the bonding phases (or the matrix) leads to debonding between the coarser grains, the dissolution of which is inherently slower and usually apparent only at the refractory hot face. To minimize dissolution of the matrix, the composition can be altered...
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 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 Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001387
EISBN: 978-1-62708-215-0
... electron microscopy (SEM) and energy-dispersive x-ray (EDX) studies were carried out on the outer and inner surfaces of the gouged anode. EDX analysis of the unattacked nickel matrix showed the presence of nickel only ( Fig. 4 ). Analysis of the outer surface of the gouged resolidified nickel, however...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001534
EISBN: 978-1-62708-220-4
... and decohesion of inclusion/matrix interfaces were also noticed. These features are characteristic of hydrogen embrittlement ( Ref 9 , 10 ). According to Towers ( Ref 11 , 12 ), for steels with tensile strengths in the range of 334 to 688 MPa, the reduction in testing temperature for subsize Charpy...
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
... attack Steels subject to combined high-temperature and high-pressure hydrogen. Also affects copper Irreversible chemical 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...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
..., aspect ratio, distribution, orientation, combination with fillers, and the quality of bonding with the matrix), and operating conditions. Fibers are far more wear resistant than the matrix and hence control the wear of composite. Continuous fiber-reinforced composites with a thermoset-polymer matrix...