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Crevice corrosion

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048708
EISBN: 978-1-62708-229-7
... by crevice corrosion. The tubing in the cooler was replaced, and cooling-water supply was changed from river to city water, which contained no dirt to deposit on the tube surfaces. An alternate solution of installing replacement tubes in the vertical position to make deposition of solids from river...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0047611
EISBN: 978-1-62708-220-4
... tubes expanded and welded into two type 304L stainless steel tube sheets. The tubes failed by crevice corrosion. The failed tubes were defective as-received, and the establishment of concentration cells within the longitudinal cracks in the seam welds led to ultimate corrosive penetration of the wall...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001718
EISBN: 978-1-62708-220-4
... inadequate head. Corrosion pitting, crevice corrosion, and solidification cracks (casting defect) also contributed to the failure. Cavitation corrosion Hydrochloric acid Pump impellers Grade 702 UNS R60702 Crevice corrosion Casting-related failures Pitting corrosion Remnants of two zirconium...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001570
EISBN: 978-1-62708-220-4
... Thermal fatigue fracture Crevice corrosion In recent years, there has been a growing application of reactive metals in the processing equipment in chemical, petroleum, and power industries. Commercially pure titanium with desirable engineering properties as well as excellent corrosion resistance is...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091345
EISBN: 978-1-62708-220-4
.... Recommendations included replaced the material with type 304L stainless steel. Crater corrosion Heat exchanger tubes Nitric acid Welded joints 347 UNS S34700 Crevice corrosion Beveled weld-joint V-sections were fabricated to connect inlet and outlet sections of tubes in a type 347 stainless steel...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001334
EISBN: 978-1-62708-215-0
... that the tube failed from crevice corrosion under seawater deposits that had formed on the inner surface. Mechanical cleaning of the condenser tubes every 6 months and installation of intake screens of smaller mesh size were recommended. Aluminum bronzes Nuclear reactor components Seawater...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001068
EISBN: 978-1-62708-214-3
... Abstract Four tanks made from type 304L stainless steel were removed from storage. Atmospheric corrosion on the outside of the tanks and pitting and crevice corrosion on the inside were visible. Metallographic examination revealed that the internal corrosion had been caused by crevices related...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001049
EISBN: 978-1-62708-214-3
.... Deep corrosion fissures then developed at hot crack sites as a result of crevice corrosion. Use of the appropriate overlay material was recommended. Claddings, corrosion Wood products 309 UNS S30900 Crevice corrosion Surface treatment related failures Routine inspections...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001310
EISBN: 978-1-62708-215-0
..., corrosion under deposit (pitting and crevice), and dezincification. Fractures were transgranular and typical of stress-corrosion cracking. The primary cause of the corrosion deposit was low-flow conditions in those parts of the condenser where failure occurred. Maintenance of proper flow conditions was...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001386
EISBN: 978-1-62708-215-0
... fracture that was preceded by a small fatigue region. Pitting corrosion was evident at the fracture origin. The areas around the load cells had been subjected to regular washdowns using high-pressure hot water, and the pitting was attributed to crevice corrosion between the load cell and the holddown bolts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048043
EISBN: 978-1-62708-224-2
... terminal specimen. It was indicated by the holes in the region adjoining the crack and rough texture of the crack surface that a corrosive medium (presumably seawater) had entered the crack from the inner surface of the fitting and coupled with the hairline crack to develop crevice corrosion. The crack...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... galvanic corrosion, uniform corrosion, pitting, crevice corrosion, intergranular corrosion, selective leaching, and velocity-affected corrosion. In particular, mechanisms of corrosive attack for specific forms of corrosion, as well as evaluation and factors contributing to these forms, are described. These...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001423
EISBN: 978-1-62708-233-4
... joint showing extensive cracking from crevices. (×3). Examination of the cracks at higher magnification revealed them to be of the stress corrosion type, typical examples being illustrated in Figures 3 and 4 . The fine transgranular branching nature of the cracks is characteristic of this mode...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001237
EISBN: 978-1-62708-220-4
... stresses. The narrow gap between vessel and mild steel casing may have aggravated the situation in that it hindered ventilation and evaporation of condensation and favored the absorption and concentration of acids and salts. Contact and crevice corrosion due to deposition of rust from the mild steel casing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001395
EISBN: 978-1-62708-220-4
... such a distance from the weld that the heat of welding could have raised the metal temperature to 550 to 700 deg C (1292 deg F). The corrosion of the shell material which occurred at the shell side of the weld under the backing ring is also an example of crevice corrosion. Leakage Sensitization...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001824
EISBN: 978-1-62708-241-9
... primary failure mechanism in the areas of the bolts directly exposed to the working environment. Corrosion damage on surfaces facing away from the work environment was caused primarily by chloride stress-corrosion cracking, aided by loose fitting threads. Thread gaps constitute a crevice where an...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001399
EISBN: 978-1-62708-220-4
... initiated on the internal surface of the plate at the crevice between the plate and the vane. It was evident that the impeller failed by stress-corrosion cracking, which initiated in the crevice between the vanes and back plate and propagated through the plate along the line of the rivets where working...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091655
EISBN: 978-1-62708-229-7
... sleeve that created susceptibility to crevice corrosion. Dimensions given in inches After the safe-end had been cut from the reactor, it was radiographically inspected on-site to confirm the extent of cracking. This inspection indicated major cracking over approximately 280° of the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001695
EISBN: 978-1-62708-229-7
... water and increases the resistance to current flow. Crevice corrosion of aluminum alloys is highly localized corrosion occurring on closely fitted surfaces upon entry of water into the crevice. Crevices exist in many locations in the storage basins where nuclear fuel is supported by hanger and storage...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001273
EISBN: 978-1-62708-215-0
... corrosive media promoting the stress-corrosion cracking, because the rods have crevices (threads) which trap and hold liquid. The highest concentration of liquid would likely be under the nuts on the hanger rods. The clamping force from the nuts used on both sides of the supported member and residual...