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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001323
EISBN: 978-1-62708-215-0
... Abstract Original carbon steel and subsequent replacement austenitic stainless steel superheater tube U-bend failures occurred in a waste heat boiler. The carbon steel tubes had experienced metal wastage in the form of caustic corrosion gouging, while the stainless steel tubes failed by caustic...
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Published: 01 January 2002
Fig. 20 Optical micrograph of a cross section at the plate ring showing gouging abrasion. Notice the deep depressions with deformed material and cracks. More
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Published: 01 June 2019
Fig. 4 Optical micrograph of a cross section at the plate ring showing gouging abrasion. Notice the deep depressions with deformed material and cracks. More
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Published: 15 January 2021
Fig. 13 Deep caustic gouging beneath heavy insulating deposits. Steam forming under the insulating deposit escapes and concentrates caustic capable of dissolving metal. Courtesy of NACE International More
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Published: 15 January 2021
Fig. 20 Optical micrograph of a cross section at the plate ring showing gouging abrasion. Notice the deep depressions with deformed material and cracks. More
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Published: 01 December 1993
Fig. 2 Deep gouging (trenching) type of attack in the inside upper part of Tubes BlSl and B3S1 More
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Published: 01 December 1993
Fig. 4 Gouging type of attack in Tube B3S3 on the inside top part More
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Published: 01 December 1993
Fig. 7 Gouging attack in a longitudinal section from a corroded area in Tube B3S1. Note lack of weld fusion between tube material and fin. More
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Published: 01 December 1993
Fig. 2 The gouging (arrow) observed after the heavy internal deposit was removed by bead blasting from U-bend T2. More
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Published: 01 December 2019
Fig. 2 Examples of contact wear and gouging on one side (see black arrows) of the mating components More
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Published: 30 August 2021
Fig. 93 (a) Caustic gouging on transfer piping. (b) More highly stressed location, where caustic cracking was found on caustic transfer piping More
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Published: 30 August 2021
Fig. 20 Photographs of the gouge and rupture, with the gouge indicated by white arrows More
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
... Abstract Nickel anodes failed in several electrolysis cells in a heavy-water upgrading plant. Dismantling of a cell revealed gouging and the presence of loosely attached black porous masses on the anode. The carbon steel top, plate was severely corroded. An appreciable quantity of black powder...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001495
EISBN: 978-1-62708-221-1
... and thus met material specification. The failure was a result of torsional fatigue in the tensile plane, originating from one of several gouges around the splined radius of the shaft. The fatigue crack progressed for a large number of cycles before final fracture. The shaft met metallurgical requirements...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048777
EISBN: 978-1-62708-229-7
..., indicative of pre-existing cracks, were revealed by examination of the fracture surface at the drain grooves arc gouged at the nozzle sites. A thin layer of material with a dendritic structure was observed at the groove surface. The dendritic layer was revealed by qualitative microprobe analysis to contain...
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Published: 01 June 2019
Fig. 2 Section through arc-gouged drain groove showing thin layer of dendritic structure containing cracks. Etched with nital. 55× More
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Published: 01 January 2002
Fig. 5 Section through arc-gouged drain groove showing thin layer of dendritic structure containing cracks. Etched with nital. 55× More
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Published: 01 June 2019
Fig. 2 Scanning electron micrograph near the screw hole showing the gouge marks (see arrows). More
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Published: 01 December 1993
Fig. 15 Outer races in housing held by retaining nut. Note wear and gouges on upstream (left side) outer race shoulder and on retaining nut, suggesting that the bearing balls moved out of the ball path to travel on the shoulder and retaining nut, as hypothesized in Fig. 14 . 1.09× More
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Published: 01 December 1993
Fig. 4 EDX spectra. (a) Unaffected nickel anode surface. (b) Outer surface of gouged anode. (c) Inner surface of gouged anode More