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transgranular cleavage

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048795
EISBN: 978-1-62708-220-4
... the formation of hard spots. The mode of crack propagation was established by microstructural examination to be transgranular cleavage. It was concluded that failure of the pressure vessel stemmed from the formation of transverse fabrication cracks in the HAZ fostered by the presence of hard spots...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001372
EISBN: 978-1-62708-215-0
... showed that the fracture was brittle and was initiated by an intergranular cracking mechanism. The mode of fracture outside the crack initiation zone was transgranular cleavage. No indication of fatigue was found. The failure was attributed to improper heat treatment during manufacture, which resulted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0091475
EISBN: 978-1-62708-225-9
... °F). Fig. 1 Two views of a fracture from hydrogen embrittlement of a type 431 stainless steel mushroom-head closure. This is not typical; HE cracking on cylinders is usually circumferential. The fracture surface displayed areas of both transgranular cleavage, as shown in the stereo pair...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045988
EISBN: 978-1-62708-235-8
... in the specimen from the broken strap at a bend angle of approximately 20°. Fracture occurred by transgranular cleavage with a slight amount of grain-boundary separation. The specimen from the unfailed strap was bent through an angle of approximately 180° with no cracking and only slight orange peel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0090938
EISBN: 978-1-62708-221-1
... was transgranular cleavage. The microstructure consisted of size 5 type A graphite flakes in a matrix of approximately 73% pearlite/27% ferrite. No free carbides were present. The crack followed the profile of the graphite flakes, as shown in Fig. 1(c) . The transmission housing castings exhibited brittle...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001656
EISBN: 978-1-62708-219-8
... in proximity to the surfaces, designated by the letter C, than away from the bar surface. This is evidence of the presence of mild stress concentrations existing close to the bar surface, which accelerated crack propagation. Transgranular cleavage and intergranular tearing were observed at the crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001611
EISBN: 978-1-62708-219-8
... was predominantly transgranular cleavage, with some limited areas of dimple rupture (or microvoid coalescence). The faceted cleavage crack growth mechanism was dominant over the entire surface of the fracture. No evidence of single or multiple sources for fracture initiation was observed. This is critical, because...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001263
EISBN: 978-1-62708-224-2
... of lamellar pearlite with a coarse ferrite network at the former austenite grain boundaries ( Fig. 2 ). The fracture was fissured and made up mainly of transgranular cleavage fractures. As shown by Fig. 3 , these cleavages occurred not only in the ferrite but also in the pearlite grains. Fig. 2...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001026
EISBN: 978-1-62708-214-3
... for defects before further processing and that foundry practices be reviewed to correct deficiencies leading to excessive hydrogen absorption during melting and casting. Castings Cleavage Martensitic stainless steels Military planes Supports Transgranular fracture Wings (aircraft) 17-4 PH UNS...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001837
EISBN: 978-1-62708-241-9
... in combination with thermal stresses and constraint conditions, resulted in intergranular brittle fracture. welded nozzle assembly brittle fracture localized heating chromium alloy steel transgranular cleavage dimple rupture dye penetrant testing welding parameters 0.1%C-1.25%Cr-0.8%Mo-0.2%V steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001703
EISBN: 978-1-62708-227-3
... occurred by brittle transgranular cleavage ( Figure 11 ). Fig. 10 Fracture surfaces from area of subcritical cracking. a) Micrograph in corroded region of main crack (×200). b) Micrograph from surface of crack in adjacent thread (×400). Fig. 11 Scanning micrograph showing transgranular...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... environmentally induced embrittlement fracture mechanics fracture modes intergranular fracture load-bearing capacity microstructure mixed-mode cracking overload failures stress analysis thermally induced embrittlement transgranular cleavage OVERLOAD FAILURES, from the perspective of materials...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... microscopically identifiable striations and macroscopic beach marks in cyclic failures. Transgranular Cleavage Transgranular cleavage is cracking through the discrete grains. Intracrystalline is an equally descriptive term, but it is not preferred terminology. Crystallographic cleavage occurs...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001134
EISBN: 978-1-62708-214-3
... dimple formations characteristic of ductile tensile failure ( Fig. 6 ). High magnification images of the fracture surface opposite the weld failure clearly displayed two distinct fracture surfaces ( Fig. 7 ). Figure 8 depicts the case-hardened region, which display transgranular cleavage enveloped...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0048819
EISBN: 978-1-62708-233-4
... and scale near the crack origin were revealed by microscopic examination and cracking was found to be transgranular. Periods of corrosion alternated with sudden instances of cleavage, under a tensile load, along preferred slip planes were interpreted during examination with a microscope. It was concluded...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001567
EISBN: 978-1-62708-230-3
.... The cracks had extended radially from the electric resistant weld into the base metal. Metallographic examination revealed the cracks were transgranular and branching, characteristic of SCC in austenitic stainless steels. The fracture surfaces had a brittle cleavage-like appearance, typical of SCC...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001100
EISBN: 978-1-62708-214-3
... a transgranular mode with cleavage and ductile, dimpled shear. Hardness values as high as 35 HRC were measured in the bend area. The as-galvanized bolts fractured in a brittle manner. Failure was attributed to improper bending of the bolts, which provided a severely cold-worked bend area susceptible to strain-age...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001322
EISBN: 978-1-62708-215-0
... operation of both can occur when the resolved stresses for grain boundary separation and for transgranular cleavage are approximately equal. Also, if the preferred grain-boundary fracture path is not continuous and if the cleavage stress is relatively low, the regions that do not fracture intergranularly...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001678
EISBN: 978-1-62708-218-1
... with transgranular cleavage and dimples in the bolt C. (1200×). Chemical analysis and hardness determinations were made on the failed bolts. The bolts were made from a high tensile steel equivalent to AISI 4140. While the wheel nuts were made from mild steel (AISI 1025). The bolts were heat treated...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006777
EISBN: 978-1-62708-295-2
... Fig. 1 Scanning electron microscopy images of (a) intergranular fracture in ion-nitrided layer of ductile iron (ASTM 80-55-06), (b) transgranular fracture by cleavage in ductile iron (ASTM 80-55-06), and (c) ductile fracture with equiaxed dimples from microvoid coalescence around graphite...