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microvoid coalescence
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Image
Published: 01 January 1987
Fig. 4 Different types of dimples formed during microvoid coalescence. (a) Conical equiaxed dimples in a spring steel specimen. (b) Shallow dimples in a maraging steel specimen
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Published: 01 January 2002
Fig. 9 Dimpled rupture created by microvoid coalescence in a quenched and tempered steel. Note the presence of carbide particles in the bottom of several dimples. Palladium shadowed two-stage carbon replica. Because the image is a replica of the fracture surface, there is a reversal
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Image
in Mechanisms and Appearances of Ductile and Brittle Fracture in Metals
> Failure Analysis and Prevention
Published: 01 January 2002
Fig. 17 Microvoid coalescence in an aluminum-silicon alloy (A380) loaded in tension. (a) Fracture surfaces consist of cleaved particles (i.e., silicon) and ridged fracture of the aluminum. 200×. (b) Higher-magnification (1440×) view of boxed region. (c) A fractured aluminum ligament surrounded
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Published: 15 January 2021
Fig. 10 Dimpled rupture created by microvoid coalescence. Courtesy of Engineering Systems, Inc.
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in Mechanisms and Appearances of Ductile and Brittle Fracture in Metals
> Failure Analysis and Prevention
Published: 15 January 2021
Fig. 17 Microvoid coalescence in an aluminum-silicon alloy (A380) loaded in tension. (a) Fracture surfaces consist of cleaved particles (i.e., silicon) and ridged fracture of the aluminum. Original magnification: 200×. (b) Higher-magnification (1440×) view of boxed region. (c) Fractured
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Image
Published: 31 August 2017
Fig. 8 Different types of dimples formed during microvoid coalescence. (a) Conical equiaxed dimples in a spring steel specimen. (b) Shallow dimples in a maraging steel specimen. Source: Ref 8
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Image
Published: 01 June 2012
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Published: 01 June 2012
Fig. 5 SEM image of directional microvoid coalescence in a 304 stainless steel catheter coil wire that fractured by torsional loading
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Published: 01 June 2012
Fig. 6 SEM image of directional microvoid coalescence in a Nitinol wire that fractured in bending (arrow identifies the crack growth direction)
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Image
Published: 01 June 2012
Fig. 26 SEM image of microvoid coalescence at the center of a work-hardened 304 catheter wire that fractured under tensile loads
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Published: 01 June 2012
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Published: 01 June 2012
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in Failure Analysis of Medical Devices
> Analysis and Prevention of Component and Equipment Failures
Published: 30 August 2021
Fig. 6 Scanning electron microscopy image showing microvoid coalescence in a fractured nitinol wire
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Image
Published: 01 June 2024
Fig. 28 Fracture surface resulting from microvoid coalescence plus tearing of a tensile test specimen machined from alloy Ti-8Mo-8V-2Fe-3Al and quenched from 900 °C (1650 °F), then aged for 144 h at 350 °C (660 °F). This fracture surface contains a mixture of mostly dimples and some regions
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Published: 01 June 2024
Fig. 10 Secondary electron SEM fractograph of microvoid coalescence fracture features in a helicopter rotor control system drive pin fabricated from AerMet100 alloy quenched and aged to 53 HRC
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Published: 01 June 2024
Fig. 55 Secondary electron SEM fractograph of microvoid coalescence fracture in American Association of Railroads (AAR) TC-128 grade B railroad tank car steel. The fracture was created in a transverse Charpy V-notch specimen at 65 °C (150 °F).
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Image
Published: 01 June 2024
Fig. 1 Graphical representation of the microvoid coalescence mechanism, (a) inclusion in a ductile matrix, (b) void nucleation, (c) void growth, (d) strain localization between voids, (e) necking between voids, (f) void coalescence and fracture. Adapted from Ref 1
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Image
Published: 01 January 2003
Fig. 8 Schematic illustrating the mechanisms of crack growth by microvoid coalescence. (a) Inert environment. (b) Embrittling liquid metal environment
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Published: 01 June 2024
Fig. 8 Secondary electron SEM fractograph demonstrating equiaxed microvoid coalescence fracture features due to tensile overstress in an SAE grade 8 zinc-electroplated steel crankshaft bolt. The bolt is quenched-and-tempered martensite with a hardness of 38 HRC.
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Book Chapter
Book: Fractography
Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000620
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of cast aluminum alloys and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the brittle fracture, microvoid coalescence, fatigue...
Abstract
This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of cast aluminum alloys and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the brittle fracture, microvoid coalescence, fatigue striations, and microstructure of these alloys. The components considered include fractured sand-cast carrier trays, broken extension-housing yokes, helicopter tail-rotor drive assemblies, fractured bell-crank fittings, chain-hoist hooks, and automotive connecting rods.
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