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Hot gas corrosion

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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.c9001281
EISBN: 978-1-62708-215-0
... was the result of hot corrosion caused by a combination of contaminants, cooling-hole blockage, and coating loss. Hot gas corrosion X-40 UNS R30031 High-temperature corrosion and oxidation Background Visual Examination of General Physical Features Testing Procedure and Results Discussion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001827
EISBN: 978-1-62708-241-9
...Abstract Abstract Gas turbines and other types of combustion turbomachinery are susceptible to hot corrosion at elevated temperatures. Two such cases resulting in the failure of a gas turbine component were investigated to learn more about the hot corrosion process and the underlying failure...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... processes, namely hot corrosion, hydrogen interactions, molten salts, aging, molten sand, erosion-corrosion, and environmental cracking, are discussed under boiler tube failures, molten salts for energy storage, and degradation and failures in gas turbines. The article describes the effects of environment...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... Fatigue Fretting Wear Erosive Wear High-Temperature Oxidation Hot Corrosion Liquid Metal Embrittlement Manufacturing and Repair Deficiencies References References 1. Dundas R. , “ A Statistical Study of Gas Turbine Losses and Analysis of Causes and Optimum Methods...
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
... such as temperature, alloy or protective coating composition, time, and gas composition. This article explains a number of potential degradation processes, namely, oxidation, carburization and metal dusting, sulfidation, hot corrosion, chloridation, hydrogen interactions, molten metals, molten salts, and aging...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001046
EISBN: 978-1-62708-214-3
..., and Inco alloy C-276) were placed directly in the hot gas stream, containing HCl and Cl2, for in situ testing. Results of this investigation showed that nickel-chromium corrosion-resistant alloys, such as Inconel 600, Inconel 625, and Inco alloy C-276, performed well in this environment. Laboratory testing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001602
EISBN: 978-1-62708-229-7
...Abstract Abstract This article presents a failure analysis of 37.5 mW gas turbine third stage buckets made of Udimet 500 superalloy. The buckets experienced repetitive integral tip shroud fractures assisted by a low temperature (type II) hot corrosion. A detailed analysis was carried out...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001105
EISBN: 978-1-62708-214-3
..., corrosion Chemical processing equipment, corrosion Hot gas corrosion ASME SA193-B7 ASME SA194-214 4140 UNS G41400 Incoloy 800H UNS N08810 High-temperature corrosion and oxidation Stress-corrosion cracking Background Testing Procedure and Results Conclusion and Recommendations Selected...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001357
EISBN: 978-1-62708-215-0
... of silicon, vanadium, lead, and zinc. A change of fuel was recommended. Gas turbines Hot gas corrosion UNS N07500 Udimet 500 Udimet 710 Rene' 77 High-temperature corrosion and oxidation Background Visual Examination of General Physical Features Testing Procedure and Results Discussion...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001109
EISBN: 978-1-62708-214-3
... proposed: modification of the processing parameters to reduce the salt deposition and / or change of bar materials to a more resistant alloy. Castings Fluxing Fused salts Hot gas corrosion Ironmaking Pelleting Sintering furnaces HH UNS J93503 High-temperature corrosion and oxidation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003551
EISBN: 978-1-62708-180-1
... resistance of structural ceramics to hot gases Table 3 Corrosion resistance of structural ceramics to hot gases Ceramics at purity(>99.5%) Resistance to indicated gas at indicated temperature (a) , °C (°F) Air Steam CO H 2 H 2 S F (gas) Alumina A, 1700 (3090) A, 1700 (3090...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001791
EISBN: 978-1-62708-241-9
... any kind of segregation. Figure 9 indicates that sample 3 presented predominantly martensite, bainite, and ferrite with precipitation of carbides in this region which was directly exposed to hot gas flux. In the same way, in sample 3, pitting corrosion was also observed. Fig. 3 Sample 1 (away...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001681
EISBN: 978-1-62708-234-1
... products are liquid, and such corrosion is termed hot corrosion [ Ref 7 , 8 ]. The materials used to withstand such an environment are usually alloys which have been successfully used in high temperature gas turbines, in which they are subjected to similar severe operating condition [ 9...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001048
EISBN: 978-1-62708-214-3
... occurred only at a particular location of the cooler: between the tube-inlet portion and the first baffle. The tube walls are at the maximum temperature, close to the gas-inlet temperature of 280 °C (540 °F). Most Probable Cause In a nitrogenous fertilizer plant, hot synthesis gases containing 14...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... of the degree of embrittlement. Oxidation and Hot Corrosion Resistance The operating environment of a gas turbine blade contains significant levels of oxygen and smaller amounts of other elements, such as sulfur, that react readily with metals at operating temperatures. Hot corrosion is a severely...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0091761
EISBN: 978-1-62708-229-7
... caused a step change in stress. Because normal operation includes cycling of loads and temperatures, the shroud tip fractured due to thermomechanical fatigue in its degraded state. Fig. 2 Degradation of rupture for Udimet 500 due to hot corrosion at 705 °C (1300 °F) Gas turbines operating...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001031
EISBN: 978-1-62708-214-3
... resulted in a higher hot-gas wall temperature and associated degradation of mechanical properties. Combustion chambers Engine components Internal oxidation Pinholes Reentry vehicles Rocket engines Transgranular fracture NARloy-Z High-temperature corrosion and oxidation Brittle fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001670
EISBN: 978-1-62708-217-4
... and aging. A possible source for this high temperature exposure is static hot-gas proof testing which is conducted at MICOM. During this type of proof testing the inner wall may be exposed to a temperature of 5000 F for a period of approximately 40 milliseconds 4 . Therefore, it was suspected...
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
... Example 10: Intergranular Cracking in Heat-Exchanger Welds Due to Hot Shortness Stiffening Corrosion Resistance Example 11: Embrittlement of a Titanium Heater Tube Investigation Conclusions Recommendations Boxing of tubing for shipping should be done with care. All tubes should...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... around edges Hot cracking C 200: Discontinuities caused by internal tension and restraints to contraction (cracks and tears) C 210: Cold cracking or tearing C 211 (a) Discontinuities with squared edges in areas susceptible to tensile stresses during cooling; surface not oxidized...