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thermomechanical fatigue strength

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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
... Electron Microscopy/Fractography Scanning electron microscopy/fractography revealed a very rough surface finish, which had a deleterious effect on material fatigue strength in terms of crack initiation. Fractography was unable to reveal the primary mechanism of crack propagation, because fatigue...
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
... Abstract Thermomechanical fatigue (TMF) refers to the process of fatigue damage under simultaneous changes in temperature and mechanical strain. This article reviews the process of TMF with a practical example of life assessment. It describes TMF damages caused due to two possible types...
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
... Abstract Thermomechanical fatigue (TMF) is the general term given to the material damage accumulation process that occurs with simultaneous changes in temperature and mechanical loading. TMF may couple cyclic inelastic deformation accumulation, temperature-assisted diffusion within the material...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... overload failure overtorquing cast aluminum alloy casting pores metallurgical analysis thermomechanical fatigue strength EN 46200 (aluminum alloy AlSi8Cu3) ...
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
... these repetitive cycles, conditions for the initiation and propagation of cracks and fractures are developed as a consequence of the thermomechanical low cycle fatigue. The thickness of the tip shroud, 2.4 to 3.3 mm, is below the limit value of 3.8 mm ( Fig. 15 ). 9 The rupture strength of the thin element...
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
... of cyclic deformation, damage and lifetime behaviour in thermomechanical fatigue of engineering alloys . In: Portella P.D. , Sehitoglu H. , Hatanaka K. (eds.) 5th International Conference on Low Cycle Fatigue , pp. 161 – 175 . DVM , Berlin ( 2004 ) 5. Köberl H. , Winter...
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
... chromium) in the base metal, thereby reducing the strength of the metal and making it susceptible to thermal fatigue cracking. Fig. 1 Micrographs of two turbine blades that failed by thermal fatigue. (a) Longitudinal section taken through origin of failure (upper left corner) of fractured blade...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
... and associated failures of alloys used in high-temperature applications. The complex effects of creep-fatigue interaction are also discussed, although more detail on this is described in the article “Thermomechanical Fatigue: Mechanisms and Practical Life Analysis” in this Volume. Life assessment is also...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001819
EISBN: 978-1-62708-241-9
... [ 16 ], 316 austenitic stainless steel has ultimate tensile strength (UTS) around 515 MPa, yield strength (YS) around 205 MPa, and total elongation around 40%, which can be considered adequate properties for this kind of application. The previous results suggest that the fatigue failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001543
EISBN: 978-1-62708-218-1
... problems. The temperature in much of the piston was high enough to cause softening by overaging, lowering strength. Automotive engines Overheating Pistons Softening 357 UNS A03570 Thermal fatigue fracture Mixed-mode fracture High-temperature corrosion and oxidation The sustained high...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... in high-temperature applications. The complex effects of creep-fatigue interaction are also discussed, although more detail on this is described in the article “Thermomechanical Fatigue: Mechanisms and Practical Life Analysis” in this Volume. Life assessment is also covered in the article “Elevated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001593
EISBN: 978-1-62708-234-1
... utilized included scanning electron microscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, thermomechanical analysis, and melt flow rate determination. It was the conclusion of the investigation that the part failed via brittle fracture, with evidence also indicating low...
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
... with a low relationship between the fatigue strength, S AF , and the static strength, S u (e.g., S AF / S u = 0.05), which corresponds with an unfavorable fatigue behavior. Because of the significant scattering of the results of fatigue tests, the S - N curve must be evaluated statistically...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001305
EISBN: 978-1-62708-215-0
... • Fatigue Failures , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p 700 – 727 10.31399/asm.hb.v11.a0003544 • Antolovich S.D. and Saxena A. , Thermomechanical Fatigue: Mechanisms and Practical Life Analysis , Failure Analysis and Prevention...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001636
EISBN: 978-1-62708-217-4
... (SEM). The Failure Analysis Topics Table 1 The Failure Analysis Topics Hub Manufacture Thermomechanical processing and heat treatment Metallurgical defects Microstructural factors influencing fatigue Chemical composition Finishing Stress relief anneal Final machining...
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 not necessarily complete because it does not point to the specific environment that results in a fatigue damage mode. Instead, specific mechanisms that can result in a fatigue damage mode have to be examined. Examples include corrosion fatigue, thermomechanical fatigue, creep-fatigue interaction, and mechanical...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0006548
EISBN: 978-1-62708-180-1
... electron microscopy TG transgranular TGA thermogravimetric analysis TIFF tagged image file format T-L long transverse-longitudinal TMA thermomechanical analysis on list TME tempered-martensite embrittlement TMF thermomechanical fatigue TOF-SIMS time-of-flight secondary ion mass spectroscopy TOTM triocytl...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001675
EISBN: 978-1-62708-220-4
... , ASM Handbook , ASM International , 2002 , p 700 – 727 10.31399/asm.hb.v11.a0003544 • Antolovich S.D. and Saxena A. , Thermomechanical Fatigue: Mechanisms and Practical Life Analysis , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM International , 2002 , p...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001848
EISBN: 978-1-62708-241-9
... ). These trapped gases not only expel the piece at the end of forging and prevent sticking, but they also increase the forging load and increase wear and delamination of surface by a thermomechanical fatigue process ( Fig. 5 ). After a forging hit, the lubricant develops the “diesel effect,” expands, and ignites...