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quasicleavage

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Published: 01 December 1998
Fig. 16 Quasicleavage in the surface of an impact fracture in a specimen of 4340 steel. The same area is shown in both fractographs, but at different magnifications. The small cleavage facets in martensite platelets contain river patterns and are separated by tear ridges. Shallow dimples More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002349
EISBN: 978-1-62708-193-1
... or quasicleavage, and intergranular failure. Certain fundamental characteristics of fracture observed in precipitation-hardening alloys, ferrous alloys, titanium alloys are also discussed. cleavage fracture crack growth cracking creep dimpled rupture ductile striation formation failure analysis...
Image
Published: 01 January 2002
Fig. 11 SEM view of the fracture surface of a low-carbon steel specimen broken in tension, showing ductile dimples, local quasicleavage, and manganese sulfide inclusions More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
... (tongues, microtwins, and location of cleavage-crack origins) Quasicleavage features Dimples from microvoid coalescence Tear ridges Fatigue striations Separated-grain facets (intergranular fracture) Mixed fracture features, including binary combinations of cleavage features, dimples...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... to fracture on a microscopic level. Ductile fractures are those that occur by microvoid formation and coalescence, whereas brittle fractures are characterized by the propagation of a crack by quasicleavage. In high-strength aluminum alloys and high-strength steels, brittle (low-energy) fracture can occur...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002412
EISBN: 978-1-62708-193-1
... magnesium, crack orientation is more strongly influenced by grain boundaries than the slip ( Ref 3 ). The initial stage of fatigue crack growth usually occurs from quasicleavage, which is common in hexagonal close-packed structures such as magnesium. Further crack growth micromechanisms can be brittle...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001835
EISBN: 978-1-62708-181-8
..., and are applied fracture on microscopic level. Ductile fractures are those that occur by microvoid formation and coalescence, whereas brittle fractures can occur by either transgranular (cleavage, quasicleavage, or fatigue) or intergranular cracking. Intergranular fractures are specific to certain conditions...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003540
EISBN: 978-1-62708-180-1
... by hydrogen. As with ferrous alloys, hydrogen in nickel and its alloys may introduce IG, transgranular, or quasicleavage cracking, and, although the macroscopic features appear to be brittle, on a microscopic scale there is a high degree of local plasticity, suggesting that hydrogen enhances flow at the crack...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002405
EISBN: 978-1-62708-193-1
..., where the latter are much smaller than in the solution-annealed specimens ( Ref 55 ). Aging alloy 2205 at 475 °C for 100 h will lead to unstable crack propagation and a fracture surface of quasicleavage type ( Ref 56 ). Depending on the specimen orientation in a fracture toughness test, crack growth...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
..., is coated with gold or palladium applied at an angle to the surface to create contrast shadowing. Fig. 11 SEM view of the fracture surface of a low-carbon steel specimen broken in tension, showing ductile dimples, local quasicleavage, and manganese sulfide inclusions Fig. 12 Replicas...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002352
EISBN: 978-1-62708-193-1
... is clearly associated with dimpled rupture, while brittle fracture mechanisms produce the well-known fracture features of: Transgranular cleavage or quasicleavage Intergranular separation Features on transgranular facets, such as river marks, herringbone patterns, or tongues Crazing...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.9781627082006
EISBN: 978-1-62708-200-6
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.9781627081993
EISBN: 978-1-62708-199-3