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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047753
EISBN: 978-1-62708-235-8
... was revealed by visual examination. Fatigue marks, emanating from multiple crack origins on the inside surface of the housing at the brazed joint were revealed by further study of the fracture. A poor metallurgical bond was confirmed by the presence of large irregular voids, flux trapped braze metal...
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Published: 01 January 2002
Fig. 31 Microstructure, linked voids, and split grain boundaries in the failed outlet header shown in Fig. 30 . 400× More
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Published: 01 January 2002
Fig. 41 Voids formed by methane in a carbon steel exposed to a hydrogen atmosphere at high temperature. The carbides in the pearlite have been eliminated by reaction with the hydrogen. Courtesy of Dr. T.L. da Silveira, Rio de Janeiro, Brazil More
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Published: 01 January 2002
Fig. 22 Light micrographs depicting (a) excessive and (b) low relief around voids in a braze between an austenitic stainless steel and Monel. The specimen was etched with glyceregia. More
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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: 01 January 2002
Fig. 20 Section through an automatic gas tungsten arc weld containing voids caused by incomplete fusion. (a) Base metal at left is Incoloy 800 nickel alloy, that at right is 2.25Cr-1.0Mo alloy steel. Filler metal was ERNiCr-3, used with cold wire feed. Macrograph. 1×. (b) Micrograph More
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Published: 01 June 2019
Fig. 2 Overlay illustration of radiograph of weld at leak site. Four large voids exist in the weld itself. More
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Published: 01 June 2019
Fig. 5 View of inside surface at weld having several large MIC voids. Weld has numerous visible flaws. More
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Published: 01 June 2019
Fig. 7 View of section through the weld in Figures. 5 & 6 . Voids in the filler material are obvious. 15×. More
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Published: 30 August 2021
Fig. 54 Microstructure, linked voids, and split grain boundaries in the failed outlet header shown in Fig. 53 . Original magnification: 400× More
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Published: 30 August 2021
Fig. 19 Scanning electron micrograph of the crack surface showing creep voids. Original magnification: 250× More
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Published: 30 August 2021
Fig. 98 Head of rail. Arrows indicate the voids present More
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Published: 01 December 1993
Fig. 2 Internal surface of a sample at the 12:00 position. Voids from hydrogen damage are evident beneath the internal corrosion (black arrows). Nital etch. (a) Copper deposits are visible on the internal surface (white arrows). (b) Microfissures near the internal gouging. 800×. More
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Published: 01 December 1993
Fig. 3 Microstructure in Tube 3 at the rupture. The creep voids have linked up to form a crack. Nital etchant. (a) 177×. (b) 308×. More
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Published: 01 December 1992
Fig. 8 Intergranular corrosion at the external surface of the flange. The voids are the locations of the spalled grains. 50×. More
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Published: 01 December 1992
Fig. 5 SEM micrographs of typical shrinkage voids. EDS spectra of the four numbered locations in (b) are shown in Fig. 6 and 7 . (a)46.5×. (b)124×. More
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Published: 01 December 1993
Fig. 5 Photomicrograph showing crack at toe of weld. Note voids along fusion zone and intergranular corrosion within base metal and weld metal. 15.75× More
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Published: 01 December 1993
Fig. 5 Photomicrograph of the b failure lip in tube 1. Note the creep voids along the fracture surface. Nital etch, 38× More
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Published: 01 December 1993
Fig. 10 Typical results of in situ EDS analyses at the base of shrinkage voids in the impeller 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