1-20 of 96 Search Results for

Heat shields

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
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001508
EISBN: 978-1-62708-236-5
... Abstract New type 321 corrosion-resistant steel heat shields were cracking during welding operations. A failure analysis was performed. The cause was found to be chloride induced stress-corrosion cracking. Packaging was suspected and confirmed to be the cause of the chloride contamination...
Image
Published: 01 June 2019
Fig. 4 Closer View of Fuel Nozzle Assembly with Heat Shields Attached, see Arrows More
Image
Published: 01 June 2019
Fig. 2 Fuel Nozzle/Heat Shield Assembly Mounting Location in Diffuser Case More
Image
Published: 01 June 2019
Fig. 5 Fuel Nozzle/Cracked Heat Shield Assembly Optical Photo More
Image
Published: 01 June 2019
Fig. 6 Close View of Crack in Heat Shield Adjacent to Weld Optical Photo More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001043
EISBN: 978-1-62708-214-3
... Abstract A 76 mm (3 in.) type 304 stainless steel tube that was used as a heat shield and water nozzle support in a hydrogen gas plant quench pot failed in a brittle manner. Visual examination of a sample from the failed tube showed that one lip of the section was eroded from service failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001145
EISBN: 978-1-62708-217-4
... heat shields welded inside the chamber. The configuration can be seen in the cut-away section of a chamber, Fig. 2 . The heat shields are not sealed to the exhaust port and are not pressure containing components. The volume between the heat shields and the chamber dome is initially pressurized...
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
... structure in the HAZ of the Inconel 600. There were very few matrix precipitates immediately adjacent to the fusion line of the heat shield attachment weld; this condition was true of the entire HAZ near the root pass. The cracking generally initiated in the HAZ some distance away from the tip of the tight...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0047645
EISBN: 978-1-62708-229-7
... to form and propagate in tension under the thermal stresses created by the repair-weld heat input. The crack resulted from contamination and embrittlement of a repair weld that had received inadequate gas shielding. Thermal stresses cracked the oxide-rich layer that formed. The gas-shielding accessories...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047641
EISBN: 978-1-62708-235-8
... contamination. Contaminants Gas tungsten arc welding Heat affected zone Oxygen Stress concentration Thermal stresses Ti-6Al-4V UNS R56406 Joining-related failures A Ti-6Al-4V alloy pressure vessel failed during a proof-pressure test, fracturing along the center girth weld. The pressure vessel...
Image
Published: 30 August 2021
Fig. 11 Example of melted polycarbonate light fixture shield. The material flows above approximately 155 °C (310 °F), near the upper end of heat exposure zone III. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048154
EISBN: 978-1-62708-235-8
... of the fracture was not available, but it was assumed that a drop of molten metal landed at the origin. The degree of heating involved would lessen or eliminate the compressive stress produced by shot peening, and contraction of the surface in contact with the tightly adherent weld metal during cooling could...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047508
EISBN: 978-1-62708-221-1
...-to-sulfur ratio and be in a normalized condition, low-hydrogen electrodes and welding practices should be used, all corners should be generously radiused, the welds should be inspected and ground or dressed to minimize stress concentrations, postweld heating is advisable, and radiographic and penetrant...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c0048087
EISBN: 978-1-62708-231-0
.... Heat affected zone Martensite Shielded metal arc welding Vibrations Welded joints Welding parameters 1020 1050 UNS G10200 UNS G10500 Fatigue fracture Figure 1(a) shows a hoist carriage tram-rail assembly fabricated by shielded metal arc welding the leg of a large T-section 1020 steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091362
EISBN: 978-1-62708-220-4
... Intergranular corrosion of a contaminated E-Brite ferritic stainless steel weld. Electrolytically etched with 10% oxalic acid. 200× Fig. 3 Intergranular corrosion of the inside surface heat-affected zone of E-Brite stainless steel adjacent to the weld fusion line. Electrolytically etched with 10...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001647
EISBN: 978-1-62708-235-8
... to identify any gas contaminant or pressure transient that might lead to porosity. Two welds were made with increased heat input, accomplished through placing a second closure weld on top of the first weld, to maximize the likelihood of detecting any contaminant released by the heat associated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048814
EISBN: 978-1-62708-229-7
... with a backing strip. The backing was back gouged off, and the weld was completed from the inside with E8018-C3 electrodes by the shielded metal arc process. The weld was continuously stress relieved for 12 h at 540 °C (1000 °F). Hardness traverses on the weldments suggested that the actual heat-treatment...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048331
EISBN: 978-1-62708-229-7
... corrosion. The thinned tubes were reinforced by pad welding. Type 304 stainless steel shields were welded to the stainless steel portions of the top reheater tubes and were held in place about the chromium-molybdenum steel portions of the tubes by steel bands. Coal dust Heat exchanger tubes Thinning...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001632
EISBN: 978-1-62708-234-1
..., on the outer surface as a means for determining surface temperature during operation. In practice, the thermocouples indicated a temperature much higher than that of the surface of the window due to heating of the thermocouples and the pads by the protons and because the heat transfer path to the coolant...
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
... or induction heating), brazed-on shields of Stellite 6B, or welded-on hard facing. Helicopter rotors are made of titanium sheet laid over a structural framework and pressurized internally with nitrogen, or of fiber-reinforced composites with a polymeric foam core. Manifestations of Liquid-Droplet Erosion...