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brittle transgranular fracture

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Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... component of interest in a failure investigation. Details on the mechanisms of deformation, brittle transgranular fracture, intergranular fracture, fatigue fracture, and environmentally affected fracture are also provided. brittle transgranular fracture creep fracture deformation ductile fracture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... Abstract This article provides a description of the microscale models and mechanisms for deformation and fracture. Macroscale and microscale appearances of ductile and brittle fracture are discussed for various specimen geometries and loading conditions. The article reviews the general...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... and fracture. Next, the mechanisms of void nucleation and void coalescence are briefly described. Macroscale and microscale appearances of ductile and brittle fracture are then discussed for various specimen geometries (smooth cylindrical and prismatic) and loading conditions (e.g., tension...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005342
EISBN: 978-1-62708-187-0
... Abstract This article discusses the visual and microscopic characteristics of fractures of cast alloys. The fractures include ductile rupture, transgranular brittle fracture, intergranular fracture, fatigue, and environmentally induced fracture. The article describes the factors that affect the...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... ductile-brittle sequence. Microscale ductile versus brittle fracture: Microscale ductile fracture is uniquely characterized by dimpled fracture surfaces due to microvoid coalescence. Microscale brittle fractures are characterized by either cleavage (transgranular brittle fracture) or intergranular...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003319
EISBN: 978-1-62708-176-4
... given ceramic (e.g., silicon nitride) depends on factors such as the grain boundary phase, grain size, and the fracture mode (transgranular versus intergranular). Thus, fatigue testing needs to consider both environmentally induced and cyclically induced crack growth. The double torsion method, which...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002417
EISBN: 978-1-62708-193-1
... deformation and fracture. In keeping with the well-established universal conventions, and in an attempt to avoid confusion, the term fatigue is used in this article to denote deterioration and fracture of both metals and nonmetals due only to cyclic loads. Brittle solids are known to be...
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
... become the preferred path of crack growth. The article describes in more detail some typical mechanisms that cause IG fracture. It discusses the causes and effects of IG brittle cracking, dimpled IG fracture, IG fatigue, hydrogen embrittlement, and IG stress-corrosion cracking. The article presents a...
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
... fractures. The mechanisms of transgranular fracture are fatigue, brittle cracking by cleavage, or ductile fracture by microvoid coalescence. In contrast, IG fracture is not a unique fracture process; it is just a preferential crack path where brittle, ductile, or fatigue cracking may occur due to the...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002379
EISBN: 978-1-62708-193-1
... Brittle materials and the possible ductile phases Material Ductile phase Ceramics: Al 2 O 3 , glass, ZrO 2 , SiC, Si 3 N 4 Ti, Ni, Pb, Al, Fe Intermetallics: TiAl, NiAl, CoAl, Nb 5 Si 3 , Cr 3 Si Ti, Nb, Co Mo, Cr Martensite Austenite, ferrite Fig. 21 Fracture toughness...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000605
EISBN: 978-1-62708-181-8
... fracture, brittle fracture, tensile-test fracture, transgranular fracture, cleavage fracture, delayed fracture, corrosion fatigue, inclusion morphology, fatigue crack propagation, and in-service fatigue fracture of various automotive components. These components include tie rod adjusting sleeves...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that helps in understanding the causes and mechanisms of fracture of AISI/SAE alloy steels (4xxx steels) and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the brittle fracture, ductile fracture...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000626
EISBN: 978-1-62708-181-8
... brittle fracture, transgranular fracture, intergranular fracture, and crack propagation of the tungsten carbide. brittle fracture cemented carbides four-point bending test fractograph intergranular fracture tungsten carbide Fig. 1273 Eta phase on the fracture surface of a 94WC-6Co alloy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003542
EISBN: 978-1-62708-180-1
..., are often best seen with vertical illumination, because origin cracks are often fairly flat and highly reflective, especially when transgranular fracture is present (see the section “Transgranular Fracture” for a further discussion). Fig. 5 Silicon nitride rod broken in uniaxial tension...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006323
EISBN: 978-1-62708-179-5
... deformation. Source: Ref 9 Fig. 1 Brittle and ductile fractures of impact test specimens of AISI 1010 steel (fully annealed). (a) Brittle fracture from impact test at –60 °C (–76 °F). (b) Ductile fracture from impact test at 0 °C (32 °F). Courtesy of Metallurgy Department of National University of...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
... brittle, depending on notched or precracked properties of the material (see the articles “Overload Failures” and “Mechanisms and Appearances of Ductile and Brittle Fracture in Metals” in this Volume). As previously noted, fatigue fractures often initiate at free surfaces. Stresses are frequently...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001831
EISBN: 978-1-62708-181-8
..., “Discontinuities Leading to Fracture,” discusses material flaws where fracture can initiate. Fracture in engineering alloys can occur by a transgranular (through the grains) or an intergranular (along the grain boundaries) fracture path. However, regardless of the fracture path, there are essentially only...
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
... occur by a transgranular (through the grains) or an intergranular (along the grain boundaries) fracture path. However, regardless of the fracture path, there are essentially only four principal fracture modes: Ductile fracture from microvoid coalescence Brittle fracture from cleavage...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... in complete separation. This final overload fracture may be more or less ductile or brittle, depending on notched or precracked properties of the material (see the articles “Monotonic Overload and Embrittlement” and “Mechanisms and Appearances of Ductile and Brittle Fracture in Metals” in this Volume...
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
... displacement rates between 5 × 10 −5 and 9 × 10 −3 mm s −1 . This failure mode was manifested in quasi-cleavage on the fracture surfaces and in lower maxima in stress intensity and displacement, and it was concluded that transgranular SCC probably occurs in these materials as a result of hydrogen...