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thermal shock

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001477
EISBN: 978-1-62708-229-7
...% of the thickness of the material leaving only a narrow band of metal ( 1 2 in. wide) adjacent to the inner surface which sheared on the occasion of the test. As the evidence suggested that the region of the boiler where the cracking developed had been subjected to a severe thermal shock, further...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001001
EISBN: 978-1-62708-229-7
... of the shell wall itself. The boiler had been in operation for approximately 160,000 h and was shut down for inspection when the cracking was detected. The material involved was 2.25 Cr, 1 Mo steel, and the unit had been subjected to 115 shutdowns. Initiation of the cracks was attributed to thermal shock...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0090451
EISBN: 978-1-62708-218-1
...Abstract Abstract Cracking occurred within the plastic jacket (injection molded from an impact-modified, 15% glass-fiber-reinforced PET resin.) of several assemblies used in a transportation application during an engineering testing regimen which involved cyclic thermal shock (exposing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001146
EISBN: 978-1-62708-229-7
... a thermal shock in the pipe which, when cooled below its NDTT, cracked in a brittle manner. Low temperature Nil ductility transition temperature Nuclear power generation Piping Thermal shock ASTM A516 grade 70 UNS K02700 Brittle fracture Introduction Visual/Photography Optical...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001391
EISBN: 978-1-62708-215-0
...Abstract Abstract Several surface-mount chip resistor assemblies failed during monthly thermal shock testing and in the field. The resistor exhibited a failure mode characterized by a rise in resistance out of tolerance for the system. Representative samples from each step in the manufacturing...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001771
EISBN: 978-1-62708-241-9
... this layer, coke readily accumulates on the surface of the tubes, fueling carbon diffusion into the metal and a corresponding degradation in microstructure and loss of ductility at high temperatures. radiant tube stress rupture thermal shock heat resistant steel carbide precipitates SEM-EDS...
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
.... Biofouling can be controlled by modern intake screening techniques, periodic chlorination of the cooling water, or periodic thermal shock. Intake screens are now available with mesh sizes as fine as 0.5 mm (0.02 in.). The thermal shock method involves recirculating the cooling water to allow the temperature...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003542
EISBN: 978-1-62708-180-1
...; picture width ∼5 mm Fig. 17 Glass plate broken in thermal shock. The fracture origin is at the lower edge of the plate. Note how the crack is normal to this edge. The “meandering” shape of the crack is typical of thermal-shock failure of plates. Camera image; picture width ∼20 mm Fig. 18...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001056
EISBN: 978-1-62708-214-3
...” of water at 140 °C (285 °F) moved cyclically on the surface. This implies that a quasi-stationary process governed the phenomenon. A thermal shock condition appeared to be of minor importance, because it involved only a very thin layer of material thickness. Nevertheless, such a thermal shock effect...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001849
EISBN: 978-1-62708-241-9
... microstructure on the spalling susceptibility and roll life has been reported in Refs. [3 – 6 ]. Spalling can be divided into two principal categories according to the mechanism of failure [ 2 , 7 ]: Surface-initiated spalling that originates from thermal shock or firecracks or a stress raiser (e.g...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001143
EISBN: 978-1-62708-229-7
... of failure. Damage mechanisms which can act on the blades include fatigue, corrosion, erosion and thermal shock. There are also combinations of these damage mechanisms, such as corrosion fatigue, which possess unique characteristics that are different from the characteristics of the two main damage...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001638
EISBN: 978-1-62708-228-0
..., and HU cast headers and transfer lines were experienced. This was mainly due to lack of ductility of the cast alloys with an accompanying lack of resistance to thermal shock. Wrought Incoloy 800H, while not as strong as the cast alloys, possessed greater ductility and thermal shock resistance and became...
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
... to the maximum service temperature, the microstructural stability, and dimensional integrity under changing thermal environments in relation to the thermal stress and thermal shock resistances. The main criteria to meet the chemical qualifications is the corrosion resistance. Durability for refractories...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001003
EISBN: 978-1-62708-227-3
... the steam is hotter, and (b) where circulation is poorer. One might speculate that boiling on the desuperheater surface might damage by thermal shock the magnetite film depended upon for protection against corrosion, but this can hardly have been the case: the generating tubes of the same boiler...
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
... reactions including sensitization, stress-corrosion cracking, and corrosion fatigue. It concludes with a discussion on various protective coatings, such as aluminide coatings, overlay coatings, thermal barrier coatings, and ceramic coatings. References References 1. Fontana M.G. , Corrosion...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
...) is present in high heat flux areas. Cracking occurs on the outside of the tubes from thermal shock exposure, most typically due to exposure to water in slag cleaning operations or splashing of water in the bottom ash hopper. The combination of thermal shock and sulfur-rich slag exposure results in corrosion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... from thermal shock exposure, typically due to exposure to water in slag cleaning operations or splashing of water in the bottom ash hopper. The combination of thermal shock and sulfur-rich slag exposure results in corrosion fatigue initiation and propagation. Fig. 7 Failure wheel for boiler tube...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
.... , An Experimentalist’s View of the Surface Flaw Problem , The Surface Crack: Physical Problems and Computational Solutions , American Society of Mechanical Engineers , 1972 , p 43 – 61 103. Kerezsi B. and Price J. , Using the ASME and BSI Codes to Predict Crack Growth due to Repeated Thermal Shock...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... source of thermal loading for thermal shock simulation. For inner surface the convection coefficient h out = 10 W/m 2 °C is applied [ 8 ] while the convection coefficient h in = 306 W/m 2 °C is applied for loading (heating up to 240 °C) the outer surface and h in = 490 W/m 2 °C for unloading...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... temperatures during thermal treatment. These large grains offered less resistance to fatigue and SCC. In addition, evidence of titanium-carbo-nitrides was detected at the grain boundaries of this material that was prohibited according to the governing specification. This phase is formed at higher thermal...