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thermal fatigue cracking

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080259
EISBN: 978-1-62708-304-1
..., intended to reduce NOx emissions, accelerates tube wall wastage. It also covers circumferential cracking in furnace waterwalls, thermal fatigue cracking induced by waterlances and water cannons, superheater-reheater corrosion, and erosion in fluidized-bed boilers. coal-fired boilers combustion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780115
EISBN: 978-1-62708-281-5
... Abstract This article covers the thermal analysis and thermal properties of engineering plastics with respect to chemical composition, chain configuration, and/or conformation of the base polymers. The thermal analysis techniques covered are differential scanning calorimetry, thermogravimetric...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240243
EISBN: 978-1-62708-251-8
... fatigue. An example of thermal fatigue occurs in ceramic thermal barrier coatings that are applied to nickel-base superalloys used in jet engines. The large differences in the coefficients of thermal expansion of the ceramic coating and the underlying nickel blade result in cracking and spalling of the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... Abstract This article is a detailed account of the mechanisms of fatigue failure of polymers, namely thermal fatigue failure and mechanical fatigue failure. The mechanical fatigue failure is discussed in terms of fatigue crack initiation and fatigue crack propagation. thermal fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870099
EISBN: 978-1-62708-299-0
... would be competitive with polymer matrix composites for the horizontal stabilizer of commercial jetliners. These strain-hardening alloys do not develop their strength through solution heat treatment; rather, they are processed to H3 tempers, which require a final thermal stabilizing treatment to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
... strains can be large, and large panels fixed at their edges can buckle due to the swelling strains. During freeze-thaw cycles, the absorbed moisture expands during freezing and can crack the matrix. During thermal spikes, absorbed moisture can turn to steam. When the internal steam pressure exceeds the...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
... approximately 1955, Coffin and Manson, who were working independently on the thermal fatigue problem, established that plastic strain-life data could also be linearized with log-log coordinates ( Fig. 20 ). As with the true stress life data, the plastic strain-life data can be related by the power-law function...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090095
EISBN: 978-1-62708-266-2
..., microstructure, and thermal history. Sensitization is particularly detrimental to austenitic stainless steels, and in many cases, eliminating it will eliminate the susceptibility to SCC. The chapter includes an extensive amount of data and illustrations. hydrogen embrittlement stainless steel stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
...) High-temperature components, burner nozzles, heat exchanger heating elements, noniron metallurgy insulating parts, thermal barrier coatings Mechanical Long-term, high-temperature resistance, fatigue, thermal shock, wear resistance Wear parts; sealings; bearings; cutting tools; engine, motor, and...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
... tube ends is a characteristic feature of thermal fatigue. Thermal fatigue damage typically exhibits numerous cracks and crazing. Damage due to thermal fatigue can be of the low-cycle or high-cycle type ( Ref 6.1 ). Drastic change in temperature causing thermal shock or a large difference in thermal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... failures are not catastrophic, they are costly and can affect plant operations. Therefore, analyses are often performed to predict when the next internal or external inspection should be performed. Typical life-limiting mechanisms include stress-corrosion cracking, fatigue, and thermal fatigue. Welded...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... test are crucial to the relative ranking of fatigue resistance among various polymers. For example, polymers with higher damping capacities can be less resistant to fatigue. These polymers experience thermal heating when tested under constant stress amplitude. Conversely, these same polymers can have...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... hardening and softening, both of which lead to premature failure. It then discusses the stages of fatigue fracture, using detailed images to show how cracks initiate and grow and how they leave telltale marks on fracture surfaces. It goes on to describe fatigue life assessment methods and demonstrate their...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080379
EISBN: 978-1-62708-304-1
... high enough, the metal can eventually fail by thermal fatigue cracking. The morphology of thermal fatigue cracking is generally very well defined and easily identified. The subject of thermal fatigue cracking has been extensively discussed in the literature and is not covered in this chapter. In...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090341
EISBN: 978-1-62708-266-2
..., which are made as glasses and then crystallized in a thermal treatment, also exhibit moisture-induced crack growth ( Ref 14.28 ). Crack growth data for this material are also included in Table 14.1 . Materials in single-crystal form, such as GaAs and Al 2 O 3 (sapphire), are used as semiconducting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
...-corrosion cracking test weldments STRESS-CORROSION CRACKING (SCC) is one of the two most subtle corrosion-related causes of premature fracture of structures. Long ago, engineers learned to expect fatigue and corrosion fatigue failures of cyclically loaded components and to plan for the replacement of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090191
EISBN: 978-1-62708-266-2
...-lithiated water chemistry additives, the generally higher temperatures and fluxes, and the possibility of localized boiling and thermal concentration cells in crevices from γ heating, which, coupled with the borated-lithiated chemistry, could lead to aggressive local chemistries. Irradiation-assisted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... such as deep drawing, punching, rolling, mismatch in riveting, welding, and so on. Unfavorable residual stresses also arise from differential thermal expansion and from installation. Various alloy systems have characteristic preferred crack paths. Stress-corrosion cracking usually follows...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090303
EISBN: 978-1-62708-266-2
... and can take the form of residual, applied, thermal, welding, or corrosion product stress. High stresses promote corrosion, initiating as well as propagating cracks. There is a threshold stress below which cracking does not occur in an extended period of time. Lowering stresses below the threshold...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... residual stresses can be used to prevent this phenomenon. Static loading usually is considered to be responsible for SCC, while environmentally induced crack propagation due to cyclic loading is defined as corrosion fatigue (see the section “Corrosion Fatigue” in the article “Forms of Mechanically...