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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
... thermal fatige cracking on a carbon steel waterwall tube due to water spraying from water cannons. The tube OD (fireside) is on the left side of the micrograph and the ID (water/steam side) is on the right side. Courtesy of Welding Services Inc. Fig. 10.57 Appearance of thermal fatigue cracks...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490111
EISBN: 978-1-62708-340-9
..., amplitude, and frequency) and factors such as temperature, material defects, component geometry, and processing history. It provides a detailed overview of the damage mechanisms associated with high-cycle and low-cycle fatigue as well as thermal fatigue, creep-fatigue, and fatigue-crack growth. It also...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630237
EISBN: 978-1-62708-270-9
... of lateral bending under the reaction force imposed by escaping steam. The tube was a 2-½ in. outside diameter, 0.250 in. wall boiler tube made of 1.25Cr-0.5Mo steel (ASME SA-213). Source: Ref 2 Fig. 8 Thermal-fatigue crack in the hardfacing alloy on an exhaust valve from a heavy-duty gasoline...
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
... of the ceramic coating and the underlying nickel blade result in cracking and spalling of the coating. Another example of thermal fatigue occurs in electronics. Heat generated during operation of electronic devices can cause fatigue of the soldered joints. The tendency for thermal fatigue has been related...
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 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...
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
... microstructure having network of cracks filled with oxide scales (c) 400×, (d) 400× Fig. 6.139 (a) SEM image of fracture surface indicating fatigue striations with oxidized nature of rupture surface, 1000×. (b) Microstructure of a tube with ferrite and bainite as the phases with typical thermal faigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... place? Was this a case of mechanical fatigue, environmentally assisted fatigue, thermal fatigue, brittle fracturing, stress-corrosion cracking, improper machining and fabrication processes, or improper alloy chemistry or heat treatment? What had been the mission loading history of the disk prior...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290099
EISBN: 978-1-62708-306-5
... alloys. The following section provides information on the residual stresses and distortion that remain after welding. The focus then shifts to distortion control of weldments. Inclusions and cracking are discussed in detail. The chapter also discusses the causes for reduced fatigue strength...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
...-element bearings. (a) Fatigue spall centered on a ball bearing raceway. (b) Fatigue spall on 12.7 mm (0.5 in.) diameter steel ball obtained using rolling four-ball machine. Source: Ref 16.3 Fig. 16.11 Subsurface crack observations during delamination failure of thermal spray WC-Co coating...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080359
EISBN: 978-1-62708-304-1
... port openings and (b) alternative materials. Superheater corrosion is also included in the discussion. To determine whether thermal fatigue was a possible cause of floor tube cracking, floor tube metal temperature was measured in a boiler at the Weyerhaeuser mill in Prince Albert, Saskatchewan...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280323
EISBN: 978-1-62708-267-9
... be classified as creep rupture, fatigue (low or high cycle—LCF or HCF), thermal-mechanical fatigue (TMF), tensile overload modified by environmental interactions, crack growth (from a new crack or an existing imperfection), or combinations thereof. By examination of fracture surfaces and comparison of component...
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 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490415
EISBN: 978-1-62708-340-9
... being extended to include vacuum brazing to fill minor thermal-fatigue and corrosion-related cracks. Turbine Blades Typical turbine blades (buckets) are shown in Fig. 9.5 and 9.6 . The blades represent the most difficult materials application in the combustion turbine, with exposure to high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870267
EISBN: 978-1-62708-344-7
... after 20 cycles; all were cracked after 40 cycles. The seven specimens of directionally solidified material ([001] orientation) showed no cracking even after 100 cycles, when the test was discontinued. Fig. 11.15 Thermal fatigue performance of conventionally cast and directionally solidified [001...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
... under Compression Forces Thermal Fatigue Corrosion Fatigue Bolt Fatigue Fatigue in Riveted Thin-Wall Pressure Vessels Identification of the Tip of the Fatigue Crack Expansion from the Fatigue Origin(s) Similarity of Appearance Absence from Certain Fracture Surfaces Confusion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080379
EISBN: 978-1-62708-304-1
... easily understood from the operating standpoint. When both stress magnitudes (or strain magnitudes) and frequencies are 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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900219
EISBN: 978-1-62708-358-4
... H13 0.40 1.00 5.00 1.20 ... 1.00 ... ... ... Heat Checking and Thermal Fatigue of H11/H13 Tool Steels A network of fine cracks, referred to as heat checking, develops in the widely used chromium hot-work steels during exposure to repeated fluctuations in temperature and stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... modified Blade-groove-wall cracking Poor creep ductility Retire; machine cracks and use lighter blades; steam cool Heat treatment has been modified Rotor surface cracking Thermal fatigue Machine cracks; enlarge radius Improved materials with resistance to thermal fatigue Bore Cracking...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250257
EISBN: 978-1-62708-345-4
... in frictional heat. The thermal expansion and contraction initiated a large number of radial cracks that progressed as a fatigue fracture ( Fig. 28b ) into the bore of the part and along the roots of the teeth. Fig. 28 Thermal fatigue cracking of a spur gear. (a) Radial cracking due to frictional heat...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280287
EISBN: 978-1-62708-267-9
... corrosive attack and thermal fatigue cracking. The microstructure of an EBPVD coating also can be altered by varying the substrate temperature and by bombarding the substrate with energetic particles, such as plasma or ion beam, that can break up the columnar structure and improve coating density...