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low-temperature fatigue

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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001752
EISBN: 978-1-62708-241-9
.... The analysis demonstrated that high temperature forging preheat was responsible. Acknowledgments aircraft crankshafts fatigue fracture forging defects low-sulfur steel planar dimpled facets tension-to-tension fatigue testing notch impact toughness AMS 6414 (low-alloy steel) UNS G43400 ...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
.... At high temperatures, however, especially when there is a hold at the maximum strain, there is a continual coarsening that occurs, Fig. 5 , and the stress decreases continually. Fig. 5 Precipitate structure of René 80 cycled in strain-controlled low-cycle fatigue at 1254 K. Note the “globular...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001149
EISBN: 978-1-62708-232-7
... of rolled and welded COR-TEN steel plate butt welded together on site. The pipe sustained local buckling and cracking, then fractured during the first five months of operation. Failure was due to low cycle fatigue and fast fracture caused by differential thermal expansion stresses. Thermal lag between...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001511
EISBN: 978-1-62708-227-3
... of the shaft. In the case of this shaft, a solution would have been to machine the core of the shaft to remove the brittle material or to use a tubular shaft. Forgings Shafts (power) Tankers (waterborne) Ultrasonic testing Low-carbon steel Fatigue fracture An LNG tanker experienced a fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046972
EISBN: 978-1-62708-217-4
... Thermal fatigue fracture High-temperature corrosion and oxidation During disassembly of an engine that was to be modified, a fractured turbine blade was found. When the fracture was examined at low magnification, it was observed that a fatigue fracture had originated on the concave side...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... ), and part diameter ( K d ) for fatigue life of steel parts. See text. Finite-Life Criterion (ε-<italic>N</italic> Curves) Strain life is the general approach employed for continuum response in the safe-life, finite-life regime. It is primarily intended to address the low-cycle fatigue area (e.g...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... m ) Safe-life, finite-life Local strain concept Low-cycle fatigue curve, ε a = f ( N i ) Cyclic stress-strain (σ a -ε a ) curve Damage tolerance Fracture mechanics concept Threshold value, Δ K th Crack growth diagram, da / dN = f (Δ K , R ) Fracture toughness, K Ic...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001346
EISBN: 978-1-62708-215-0
... a low magnification view of the area marked “X” in Fig. 2 , while Fig. 6(b) shows a higher magnification micrograph from the same area. Fatigue striations are clearly visible in Fig. 6 . The relatively wide spacing of the striations suggests the occurrence of low cycle fatigue. The direction...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... water, boiling water, low-quality steam, high-quality steam, and superheated steam. A temperature gradient between the tube wall and the fluid within the tube provides the driving force for heat transfer at any point. The design of a steam-generating unit balances the heat input from the combustion...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001794
EISBN: 978-1-62708-241-9
... radius (the one required by design) and ultimately promoted fatigue initiation. Material characterization showed that the shaft was manufactured from low-alloy steel grade AISI 4340. The shaft was quenched and tempered at a high temperature, to achieve hardness value of 30 HRC. Microstructure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001137
EISBN: 978-1-62708-228-0
... philosophy was consequently regarded as acceptable. Fracture mechanics Low temperature Pressure vessels 1ZEET Fatigue fracture An extended ‘fitness for purpose’ evaluation of cold service pressure vessels (CSPV) used in the oil from coal industry was undertaken in 1982 ( 1 ). This study made...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001051
EISBN: 978-1-62708-214-3
... for these nozzles was low-cycle corrosion fatigue. The cracks observed in this investigation were quite similar in appearance to feedwater cracks. Constant-extension-rate tests performed on A508 C12 steel, which is also used in pressure vessels, in oxygenated water at higher temperatures have demonstrated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001686
EISBN: 978-1-62708-220-4
... for coils at the non-fired end of the vaporizer during low flow transients. Dryout results in rapid increase in the tube wall temperature. Thermal cycling of the coil is completed by liquid quenching resulting from resumption of normal flow rates and the return to annular flow. The probable root cause...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001136
EISBN: 978-1-62708-229-7
... of a large industrial fan. The failure occurred from high cycle bending fatigue and appeared to have originated from a weld defect. The fracture toughness of the plate was relatively low, equivalent to K Q = 65 ± 9 MPa m over the operating temperature range of 0 to 400°C. By means...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001526
EISBN: 978-1-62708-229-7
... in accordance with ASME Specification SA-335, which covers “Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service.” The steel is Grade P22, a low-alloy steel with 2.25% chromium and 1% molybdenum. The pipe has an outside diameter of 16 in. (40 cm) and a nominal wall thickness of 3.5 in. (9 cm...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0009190
EISBN: 978-1-62708-225-9
... that the failure resulted from several interrelated factors: the lubricant viscosity was too low causing high temperatures; no antiscuff additives were used; a gearbox designed as a speed reducer was used as a speed increaser (the designer selected a long-addendum tooth for the pinion); the gear teeth were...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001296
EISBN: 978-1-62708-215-0
... current density. It was also possible that short circuiting led to high-temperature melting. Conclusion and Recommendations Most Probable Cause The brittle cracking of the valve guide was caused by low-cycle fatigue, which was attributed to the presence of a pre-existing crack in the outer...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... in this article. While the term thermomechanical fatigue is also broadly applied to define testing procedures, generic environmental exposure (both high- and low-temperature exposure), and other aspects of material evolution, this article limits the application of the term thermomechanical fatigue...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0046966
EISBN: 978-1-62708-229-7
.... Analysis (visual inspection, 100x/500x metallographic examination of sections etched with a mixture of ferric chloride, hydrochloric acid, and methanol, and bend tests) supported the conclusions that cracking of the airfoil sections was caused by thermal fatigue and was contributed to by low ductility due...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001244
EISBN: 978-1-62708-224-2
... frequently in round wire conveyor belt links because the round wire neither impresses so sharply nor abrades against the cross bars, and it also exerts less torsion than the flat wire. Annealing furnaces Belt conveyors Glass Torsional fatigue Wire Low-carbon steel Fatigue fracture The cross...