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structural alloys

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Published: 01 January 2002
Fig. 25 Fatigue-fracture structures on wrought type ASTM F563 cobalt-alloy test specimens that fatigued in air. (a) Very fine fatigue striations are superimposed on crystallographically oriented fracture structures. 2480×. (b) Crystallographically oriented fracture morphology showing twin More
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Published: 30 August 2021
Fig. 39 Fracture weld joint on alloy 7075 collar side of the swing arm structure More
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Published: 15 January 2021
Fig. 46 Composite micrograph showing the grain structure of aluminum alloy 7075-T6 plate. Source: Ref 8 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001581
EISBN: 978-1-62708-235-8
... typical of alloy 304 stainless steel. The cold worked, recrystallized, and solution annealed structures were readily apparent. The solution annealed sample was not sensitized even after 150 h at 650 °C (1200 °F). Cold work increased the rate of chromium carbide precipitation (sensitization). The absence...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001812
EISBN: 978-1-62708-241-9
... of LME as a failure analysis tool is also discussed. fasteners nozzles valves fracture mercury lead cadmium zinc structural alloys cracking cleavage radiography fracture toughness 5083-O (wrought aluminum magnesium alloy) UNS A95083 10Zn-2Pb (free-machining brass) Introduction...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003554
EISBN: 978-1-62708-180-1
... in the structural metal, when it is stressed in tension in the presence of specific lower-melting-point metal and alloys. Metal-induced embrittlement has been known for many years and has been identified as the cause of numerous failures. Reference 1 cites some of the reviews published over the years...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
..., are now termed solid-metal-induced embrittlement (SMIE). In either case, the metal-induced embrittlement is the result of subcritical crack growth in the structural metal, when it is stressed in tension in the presence of a specific lower-melting-point metal or alloy. Metal-induced embrittlement has...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001183
EISBN: 978-1-62708-223-5
... the structure of a heat treated alloy steel ( Figs. 2 ). A strongly fissured and therefore brittle alloy zone was in contact with the steel. The existence of a superlattice phase Fe 3 Al was probable. At the outer edge metal was adhering at some places that was roughened during polishing and therefore was soft...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001238
EISBN: 978-1-62708-232-7
.... This carbide is also present in the original structure of the alloy, but in appreciably smaller amounts ( Fig. 9 ). Fig. 8 Precipitates under the scale layer, longitudinal section, unetched, phase contrast micrograph (−1). 100× Fig. 9 Precipitates in the original structure of the heating strip...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001529
EISBN: 978-1-62708-217-4
... Abstract On 16 July 1999, a Boeing 737-800 on final approach for landing sustained a major lightning strike. Damage to the fuselage structure primarily was in the form of melting or partial melting of widely-separated rivets and adjacent Alclad 2024-T3 fuselage skin. The damage was confined...
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Published: 01 January 2002
Fig. 22 (a) Cold shut voids (A, B) and flow lines (C, D) both caused by failure of the streams of molten metal to merge, at the cast surface (E) of an alloy 384-F die casting. 0.5% hydroflouric acid. 53× (b) Gate area (A) of an alloy 413-F die casting that has a cold shut void (B) and a region More
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Published: 30 August 2021
Fig. 36 (a) Cold shut voids (A, B) and flow lines (C, D), both caused by failure of the streams of molten metal to merge, at the cast surface (E) of an alloy 384-F die casting. 0.5% hydrofluoric acid. Original magnification: 53×. (b) Gate area (A) of an alloy 413-F die casting that has a cold More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046022
EISBN: 978-1-62708-217-4
... that the presence of chromic acid stain on the fracture surface proved that the forging had cracked before anodizing. This suggest that the crack initiated during straightening, either after machining or after heat treatment. The structure and composition of the alloy appear to have been acceptable. Ductility...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091669
EISBN: 978-1-62708-227-3
... of the aluminum alloy coupling nuts was caused by stress corrosion. Contributing factors included use of a material that is susceptible to this type of failure, sustained tensile stressing in the presence of a marine (chloride-bearing) atmosphere, and an elongated grain structure transverse to the direction...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001455
EISBN: 978-1-62708-234-1
... Abstract Aluminum alloy BS.1476-HE.15 by virtue of its high strength and low density finds application in the form of bars or sections for cranes, bridges, and other such structures where a reduction in dead weight load and inertia stresses is advantageous. Bars and sections in H.15 alloy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001504
EISBN: 978-1-62708-217-4
..., Properties and Selection: Irons and Steels” , p. 426 , American Society for Metals , Metals Park, Ohio ( 1978 ). 2. Moore T.D. , “Structural Alloys Handbook” , p. 113 (4330 Steel), Mechanical Properties Data Center , Traverse City, Michigan ( 1977 ) 3. MIL-HDBK-5C “Metallic...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001107
EISBN: 978-1-62708-214-3
... Abstract A 150 mm (6 in.) diam, 1.6 mm (0.065 in.) thick alloy 800 1iner from an internal bypass line in a hydrogen reformer was removed from a waste heat boiler because of severe metal loss. Visual and metallographic examinations of the liner indicated severe metal wastage on the inner surface...
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Published: 01 June 2019
Fig. 3 a). Structure of a sliver, etch: alkaline sodium picramate. View. 100× unetched: steel etched: alloy. b). Structure of a sliver, etch: alkaline sodium picramate. Alloy. 500× More
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
... extensive cracking around each bolt hole. −0.21×. Testing Procedure and Results Metallography Microstructural Analysis Sections were taken from the cracked region and prepared for metallographic examination. The structures were typical of modified aluminum-silicon alloys. Some variations...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001484
EISBN: 978-1-62708-229-7
... alloy in the surface layer of oxide scale. Beneath this layer a hardened region showing martensite needles in a matrix of austenite was evident, the structure changing through “troostitic constituents” to the overheated material of the wheel. Structural changes of a similar nature occurred at the flame...