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corrosion fatigue testing

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Published: 01 December 2015
Fig. 23 Corrosion fatigue of a Ti-6Al-4V alloy tested in ambient air. Intergranular cracking and fatigue striations are evident on the fracture surface; the grain appears to have separated from the rest of the microstructure. Source: Ref 21 More
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Published: 01 November 2012
Fig. 24 Corrosion fatigue of a Ti-6Al-4V alloy tested in ambient air. Intergranular cracking and fatigue striations are evident on the fracture surface; the grain appears to have separated from the rest of the microstructure. Source: Ref 17 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870099
EISBN: 978-1-62708-299-0
... Abstract Environmentally assisted cracking is a generic term that includes various cracking phenomena such as stress-corrosion cracking (SCC), corrosion fatigue cracking, and liquid-metal embrittlement. This chapter describes these cracking mechanisms beginning with SCC and the factors...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340179
EISBN: 978-1-62708-427-7
... concentrations and shorten fatigue life. Samples with a mill finish surface can exhibit a large variation in results. Variability in the depth and acuity of the notch in notched specimens can contribute to scatter. For some alloys, the humidity of the laboratory air can have an influence. Corrosion fatigue tests...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030200
EISBN: 978-1-62708-282-2
... treating. The cost advantages and disadvantages of computer-controlled chemical injectors are discussed in Ref 39 . Corrosion fatigue in rod-pumped wells is as important as weight loss corrosion. A corrosion fatigue testing apparatus is described in Ref 40 that can be used to field test corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870085
EISBN: 978-1-62708-299-0
... erosion along with testing and prevention methods. It also provides information on fretting corrosion and fretting fatigue. aluminum aluminum alloys cavitation corrosion cavitation erosion testing fretting corrosion liquid impingement erosion CORROSION can combine with mechanical processes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030117
EISBN: 978-1-62708-282-2
... alloy tested in ambient air. Intergranular cracking and fatigue striations are evident on the fracture surface; the grain appears to have separated from the rest of the microstructure. Source: Ref 21 Corrosion Fatigue Crack Initiation The influence of an aggressive environment on fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270118
EISBN: 978-1-62708-301-0
... by corrosion pits in the root transition region. The chapter recommends further investigations to determine the cause of pitting, which appears to be confined to the dovetail region. compressor blades corrosion pitting fatigue failure SEM fractography Summary Premature service failure...
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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180197
EISBN: 978-1-62708-256-3
... the location of the tip of the fatigue crack at some point in time. Must not be confused with striations, which are extremely small and are formed in a different way. biological corrosion. Deterioration of metals as a result of the metabolic activity of microorganisms. Also known as microbiological corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.9781627082563
EISBN: 978-1-62708-256-3
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630281
EISBN: 978-1-62708-270-9
... are corrosion, distortion, fracture, and wear. false Brinelling. Fretting wear between a bearing ball and its raceway. Makes a dark depression in the race, similar to that made by an indentation from a Brinell hardness test. Properly called fretting wear. fatigue. The phenomenon leading to fracture under...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... to failure after the incremental step test, the resulting stress-strain curve will be nearly identical to the one obtained from the stabilized condition. 3.2 Microscopic and Macroscopic Aspects of Fatigue and Crack Propagation By observation, “fatigue” is a phenomenon leading to fracture under...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630211
EISBN: 978-1-62708-270-9
... while testing in air (region B) correlate with the crack advance of each loading cycle. Source: Ref 9 In real life, the type of cyclic stressing strongly influences the life under aggressive corrosion conditions ( Ref 1 ). The longer and more frequently a fatigue crack is opened...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270128
EISBN: 978-1-62708-301-0
... Abstract This chapter discusses the failure of a first-stage compressor blade in an aircraft engine and explains how investigators determined that it was caused by fatigue, with a crack originating from corrosion pits that developed in the root transition region on the convex side...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270156
EISBN: 978-1-62708-301-0
... on these findings, investigators concluded that the failure was due to a fatigue crack initiated from a corrosion pit, which may have been caused by chemicals released by the burning of bonding resin. fatigue fracture corrosion pits SEM fractography tail rotor blades visual examination Summary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130111
EISBN: 978-1-62708-284-6
... by a brief review of failure types from fracture, distortion, wear, and corrosion. Fracture is a common damage feature, because the vast majority of mechanical failures involve crack propagation—typically classified as ductile, brittle, and fatigue, as briefly described in more detail. Distortion, wear...
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
... of the problems of laboratory fatigue testing and of the fatigue process itself. Finally, information on types and statistical aspects of fatigue is provided along with examples. fatigue fracture laboratory fatigue testing macroscopic characteristics microscopic characteristics strength stress...
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 fatigue, including mechanical or vibrational fatigue, corrosion fatigue, thermal fatigue, and creep-fatigue interaction. It discusses the causes, characteristics, and impacts of each type and provides several case studies. boiler tubes corrosion fatigue creep-fatigue interaction fatigue...
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
... accelerates fatigue crack growth. Materials such as steels, which show a definite endurance limit when tested in air, do not exhibit a definite endurance limit when tested in a corrosive environment ( Fig. 14.25 ). Frequently, fatigue will corrupt the protective films that would normally slow the corrosive...