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environmentally assisted cracking

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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.c9001789
EISBN: 978-1-62708-241-9
... of success in naval applications. Material samples were examined using chemical analysis, SEM imaging, and corrosion testing. Investigators also analyzed precracked tension specimens, exposing them to different conditions to quantify stress intensity thresholds for environmentally assisted cracking. Al-Si...
Image
Published: 01 January 2002
Fig. 3 Potential ranges of environmentally assisted cracking by (I) hydrogen embrittlement, (II) cracking of unstable passive film, and (III) cracking initiated at pits near the pitting potential. Vertical dashed lines define potential range over which nonpassivating films may crack under More
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... by fatigue, creep, or environmentally-assisted cracking. Corrosion and wear are another form of progressive material alteration or removal that can lead to failure or obsolescence. This article primarily covers the topic of abrasive wear failures, covering the general classification of wear. It also...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001523
EISBN: 978-1-62708-227-3
... failure; fatigue fracture; and, environmentally-assisted cracking. Testing indicated overload failure was the cause. Remedial actions were taken to improve the fracture properties of the deck socket. A modified manufacturing process was developed involving milling and cutting instead of coining to round...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0090639
EISBN: 978-1-62708-227-3
..., and environmentally assisted cracking (stress-corrosion cracking, SCC). Failure mechanisms of fatigue fracture and environmentally assisted cracking were eliminated, because no evidence of SCC or fatigue fracture was observed; thus, the failure analysts focused on the possibility of overload failure. Further tests...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001383
EISBN: 978-1-62708-215-0
... either a fatigue mechanism or ductile overload failure. SEM analysis revealed that the mode of fracture was intergranular decohesion, which indicates an environmental influence in the fracture mechanism. The primary fracture initiated at a thread root and propagated by environmentally-assisted slow crack...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001115
EISBN: 978-1-62708-214-3
... with the pulling operation and thus parted. It is possible that the pipe suffered from environmentally assisted cracking, such as chloride stress-corrosion cracking or sulfide stress cracking. Initiation of multiple cracks and separation along grain boundaries often point to such failure mechanisms. However...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001308
EISBN: 978-1-62708-215-0
..., and that these regions are discolored as if they had been exposed to high temperatures, support this conclusion. No evidence was found to support other causes of intergranular cracking. Fatigue and environmentally assisted cracking were ruled out based on the operating conditions of the rail and the fractographic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047479
EISBN: 978-1-62708-221-1
... was cast in ultrahigh-strength low-alloy steel that had been heat treated to a hardness of 555 HB. Fig. 1 Ultrahigh-strength steel dragline bucket tooth that failed due to environmental hydrogen-assisted cracking. See also Fig. 2 . Investigation Chevron marks on the fracture surface led...
Image
Published: 01 June 2019
Fig. 1 Ultrahigh-strength steel dragline bucket tooth that failed due to environmental hydrogen-assisted cracking. See also Fig. 2 . More
Image
Published: 01 June 2019
Fig. 1 Ultrahigh-strength steel dragline bucket tooth that failed due to environmental hydrogen-assisted cracking. See also Fig. 2 . More
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
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001051
EISBN: 978-1-62708-214-3
... the corrosion pits are typical. Carbon steel is susceptible to environmentally assisted cracking in high-temperature, oxygenated water enviromnents, especially under high-amplitude, low-frequency cyclic loading. Low-frequency cyclic stresses are the type encountered during steam generator operation...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001812
EISBN: 978-1-62708-241-9
... assisted cracking . Eng. Failure Anal. 1 , 77 – 90 ( 1994 ) 10.1016/1350-6307(94)90009-4 3. Lynch S.P. : Failure of engineering components due to environmentally assisted cracking . Pract. Failure Anal. 3 , 33 – 42 ( 2003 ) 10.1007/BF02717485 4. Kamdar M.H. : Liquid...
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
... modulus or modulus of elasticity; energy E elastic or storage modulus E viscous or loss modulus EAC environmentally assisted cracking EBSP electron backscattered pattern ECT equicohesive temperature EDM electric discharge machining EDS energy dispersive spectroscopy EDX energy-dispersive x-ray (analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047508
EISBN: 978-1-62708-221-1
... in ultrahigh-strength low-alloy steel that had been heat treated to a hardness of 555 HB. Fig. 1 Ultrahigh-strength steel dragline bucket tooth that failed due to environmental hydrogen-assisted cracking. See also Fig. 2 . Investigation Chevron marks on the fracture surface led...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... on LMIE ( Ref 3 ) and SMIE ( Ref 4 ) in Corrosion: Fundamentals, Testing, and Protection , Volume 13A of the ASM Handbook , 2003. Characteristics of Liquid-Metal- and Solid-Metal-Induced Embrittlement Like other forms of environmentally induced or assisted cracking, both LMIE and SMIE require...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... associated with hydrogen formation. Current mechanisms of corrosion-assisted, sustained-load cracking are variations of two basic theories: crack advance by anodic dissolution or hydrogen embrittlement. The controlling factors in these two are: Fig. 3 Potential ranges of environmentally assisted...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001770
EISBN: 978-1-62708-241-9
... ]. Stress corrosion cracking is a form of environmentally assisted cracking (EAC) that is of great significance to the chemical, oil, and gas industries. SCC is understood to be the result of a combination of susceptible material, exposure to a corrosive environment, and tensile stress above a threshold...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001614
EISBN: 978-1-62708-225-9
... and effect of environmental conditions that caused damage to occur. 5 These results are of particular value in preventing damage from occurring and lowering the number of parts that get damaged. 6 Experimental Analysis Cracks in the screw thread can be seen with the naked eye using a magnifying...