1-20 of 73 Search Results for

Caustic stress corrosion cracking

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Image
Published: 30 August 2021
Fig. 50 Caustic stress-corrosion cracking in carbon steel. Original magnification: 100× More
Image
Published: 15 January 2021
Fig. 6 Photographs of boiler plates exhibiting caustic stress-corrosion cracking (arrows). Source: Ref 5 More
Image
Published: 15 January 2021
Fig. 32 Micrographs of caustic stress-corrosion cracking that developed in austenitic stainless steel piping. The micrographs in (b) correspond to the box in (a). Original magnification: 100× More
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
... stainless steels. Conclusion and Recommendations Most Probable Cause The cause of the U-bend failures was caustic gouging for the carbon steel U-bends and caustic-induced stress-corrosion cracking for the stainless steel U-bends. The root cause of the failures is carryover. Remedial Action...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001407
EISBN: 978-1-62708-220-4
... of the solution of caustic soda and possibly the temperature also were in the range known to produce stress-corrosion cracking of mild steels in the presence of stresses of sufficient magnitude. In this instance the location of the cracking suggested that residual stresses from welding, which approach yield point...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001324
EISBN: 978-1-62708-215-0
... Abstract A type 430Ti stainless steel flue gas expansion joint cracked because of caustic-induced stress-corrosion cracking. Energy-dispersive X-ray spectroscope analysis of the fracture surface deposits revealed the presence of sodium and potassium—caustics in hydroxide form. Primary fracture...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001367
EISBN: 978-1-62708-215-0
... approach to failure analysis to confirm that the cracking was caused by a caustic stress-corrosion cracking mechanism is presented. Caustic cracking Chemical processing equipment Compressor blades Sodium hydroxide, environment 4320 UNS G43200 Stress-corrosion cracking Background Severe...
Image
Published: 15 January 2021
Fig. 3 Plot demonstrating the susceptibility of some austenitic stainless steels to caustic stress-corrosion cracking (SCC) with respect to temperature and caustic concentration. Stress-corrosion cracking has not been observed in these austenitic stainless steels exposed to conditions More
Image
Published: 15 January 2021
Fig. 5 Photographs of a cracked rivet (top) and dislodged rivet heads (bottom) from a boiler that experienced caustic stress-corrosion cracking. Source: Ref 5 More
Image
Published: 15 January 2021
Fig. 4 Map of the United States with red circles identifying the locations of wells whose water was linked to caustic stress-corrosion cracking in boilers in the early 20th century. Source: Ref 5 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001545
EISBN: 978-1-62708-236-5
.... Caustic, not chloride, stress corrosion was the culprit. Had material substitutions been made on the original premise of countering chloride stress corrosion, most of the loop's highly stressed components would have eventually failed. Bearings Bellows Caustic stress corrosion cracking 304 UNS...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... was encountered in copper alloys, caustic embrittlement was experienced in boilers. (Caustic embrittlement is also known as caustic cracking. Both of these terms are considered archaic; currently, the term caustic stress-corrosion cracking is used to describe the same phenomenon.) Cracking was observed around...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001832
EISBN: 978-1-62708-241-9
... of oxygen. Stress-Corrosion Cracking Stress-corrosion cracking (SCC) requires the combination of stresses, specific environment, and materials susceptibility. Ferritic steels are known to be susceptible to SCC in nitrate solutions, caustic solutions, and various other environments.[ 3 ] Nitrate...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001344
EISBN: 978-1-62708-215-0
.... Boiler tubes Caustic cracking Residual stress Welded joints 304H UNS S30409 Stress-corrosion cracking Background Stainless steel superheater tubes fractured in stressed areas within a few hours after caustic regenerant leaked into the boiler feedwater system. Applications In typical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001406
EISBN: 978-1-62708-229-7
... Abstract Caustic cracking is the term used to describe one of the forms in which stress-corrosion cracking manifests itself in carbon steels. In the present study, persistent leakage occurred after ten weeks of service from tube expansions in the steam and mud drum of a two-drum D type boiler...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0048819
EISBN: 978-1-62708-233-4
... with the nozzle weld. Caustic embrittlement Potassium hydroxide Pressure vessels ASTM A516 Grade 70 UNS K02700 Stress-corrosion cracking A large pressure vessel ( Fig. 1a ) that had been in service for about 10 years as a hydrogen sulfide (H2S) absorber developed cracks and began leaking...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001405
EISBN: 978-1-62708-234-1
... Intergranular fracture Stress-corrosion cracking During the microscopical examination of a number of cases of caustic cracking, a certain feature has been recognised that appeared to be associated only with caustic cracking, this being a preferential attack on the carbide envelopes and lamellae...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001398
EISBN: 978-1-62708-229-7
... was subsequently treated with phosphate. It would appear that concentration of sodium hydroxide occurred in the bellows unit and the stress corrosion cracking which develops was of the form known as caustic cracking. For many years the use of sodium sulphate — either added as such or formed in situ from sodium...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001775
EISBN: 978-1-62708-241-9
... a caustic solution (NaOH) to remove HCl from the stream, before the latter was directed to a burner. Metallographic examination showed that the cracks were intergranular and were frequently branched. Although nominal chemical composition of the component was found within the specified range, energy...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001354
EISBN: 978-1-62708-215-0
... of sodium on crack surfaces, which is indicative of NaOH-induced stress-corrosion cracking. Failure was attributed to superheater problems that resulted in caustic carryover from the boiler. Two options for disk repair, installing a shrink-fit disk or applying weld buildup, were recommended. Weld repair...