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Velocity-affected corrosion

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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
... covered are 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...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
..., uniform corrosion, pitting and crevice corrosion, intergranular corrosion, and velocity-affected corrosion. The article contains a table that lists combinations of alloys and environments subjected to selective leaching and the elements removed by leaching. corrosion crevice corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001276
EISBN: 978-1-62708-215-0
... properties Piping Turbulent flow Wall thickness Carbon steel Erosive wear Velocity-affected corrosion Erosion - corrosion Background Testing Procedures and Results Discussion Conclusion and Recommendations Reference Reference 1. Metals Handbook, Vol. 10: Failure Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001013
EISBN: 978-1-62708-234-1
... of corrosion damage after three years' exposure. This change was made five years ago and there have been no failures since. Corrosion environments Gas pipelines Inhibitors Materials substitution Sweet gas Carbon steel Erosion - corrosion Velocity-affected corrosion A wall section of a carbon...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048714
EISBN: 978-1-62708-229-7
... bronze (copper alloy C61400). Heat exchangers Impingement corrosion Tubes C44300 UNS C44300 Corrosive wear Velocity-affected corrosion Tubes in heat exchangers used for cooling air failed in an increasing number after 5 to 6 years of service. Air passed over the shell-side surface...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0091402
EISBN: 978-1-62708-234-1
... grade 35018 UNS F22400 Velocity-affected corrosion Leakage was detected in a malleable iron elbow after only three months in service. Life expectancy for the elbow was 12 to 24 months. The 21 mm (0.82 in.) ID 90° elbow connected segments of 19 mm (0.75 in.) pipe with a wall thickness of 2.9 mm...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001679
EISBN: 978-1-62708-229-7
... present in the process cooling water. Shot peening is now being used in an attempt to place the outside of the diffuser tube in compression to eliminate the stress-corrosion cracking. Diffusion pumps Mercury Nuclear reactor components Tritium purfication 304L UNS S30403 Velocity-affected...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003567
EISBN: 978-1-62708-180-1
... but are generally between 2 and 3 ( Ref 18 ). The velocity of the slurry not only affects the rate of mechanical damage of a material but the corrosion rate as well. Above a threshold velocity, corrosion products can effectively be stripped from an alloy, thus making available a new surface that is susceptible...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001409
EISBN: 978-1-62708-229-7
...Abstract Abstract Dezincification is a particular form of corrosive attack which may occur in a variety of environments and to which some brasses are susceptible. It is favored by waters having a high oxygen, carbon dioxide, or chloride content, and is accelerated by elevated temperatures...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001592
EISBN: 978-1-62708-228-0
... presents a weaker resistance to corrosion affecting the rod life. Non-metallic inclusions are a pitting preferential site leading to fatigue crack initiation. Heterogeneous microstructure as banded martensite and ferrite/pearlite decreases the ductility of the material affecting the fatigue propagation...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001316
EISBN: 978-1-62708-215-0
... that the separators had deteriorated because of erosion corrosion. Further analysis of the boiler operation revealed that operational changes made in the last year of service caused an increase in velocity of the water/steam mixture. It was recommended that the operating parameters for the boiler be reevaluated...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001065
EISBN: 978-1-62708-214-3
...). This was obvious by the wear patterns observed during visual examination. An increase in velocity results in increased erosion corrosion attack. This increased attack may proceed continuously with increased velocity or may be negligible until a critical velocity is reached and then proceed at a greatly...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
...Abstract Abstract Engineered components fail predominantly in four major ways: fracture, corrosion, wear, and undesirable deformation (i.e., distortion). Typical fracture mechanisms feature rapid crack growth by ductile or brittle cracking; more progressive (subcritical) forms involve crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001410
EISBN: 978-1-62708-220-4
... Dezincification is a particular form of corrosive attack which may occur in a variety of environments and to which some brasses are susceptible. It is favoured by waters having a high oxygen, carbon dioxide, or chloride content, and is accelerated by elevated temperatures and low water velocities...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
...  Velocity Low Low Variable High  Impingement angle Low Low Medium-low Variable Environmental Generally dry Generally as slurry, variable pH Variable Generally as slurry, variable pH Principle mechanisms Plowing, cutting Cutting, some fragmentation and corrosion Cutting, some...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001829
EISBN: 978-1-62708-241-9
...-temperature environmental protection. Increasing the operating temperatures causes excessive oxidation and corrosion of high-strength nickeland cobalt-base superalloys being used for turbine blades and vanes [ 1 , 2 ]. The first-stage vanes are subjected to the highest gas velocity and temperature...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... cavitation collapse, except that individual liquid-droplet impacts are usually more damaging than the impacts from cavitation collapse, owing to the larger size of the impacting liquid jets and the high-velocity lateral outflows from the impact sites. Affected Systems and Materials Manifestations...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... corrosion from turbulent flow of air and condensate along the shell-side surface. (a) Shell-side surface of tube showing damaged area. (b) Damaged surface showing ridges in affected area. 4×. (c) Unetched section through damaged area showing undercut pitting typical of impingement attack. 100× Fig...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003555
EISBN: 978-1-62708-180-1
... between microstructural elements in a bucket tip shroud and its principal stresses Fig. 11 Degradation of rupture for Udimet 500 due to hot corrosion at 705 °C (1300 °F) Abstract Abstract High temperature corrosion may occur in numerous environments and is affected by factors...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
...× Fig. 8 Copper alloy C44300 heat-exchanger tube that failed by impingement corrosion from turbulent flow of air and condensate along the shell-side surface. (a) Shell-side surface of tube showing damaged area. (b) Damaged surface showing ridges in affected area. Original magnification: 4×. (c...