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microvoid coalescence

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Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000614
EISBN: 978-1-62708-181-8
..., fibrous fracture, crack-initiation zone, microvoid coalescence, fatigue-crack surface, hydrogen embrittlement, and fatigue striations of these steels. fatigue fracture fractograph maraging steel shrinkage cavities tensile-test fracture Fig. 798 Surface of a fracture in a tensile-test...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000611
EISBN: 978-1-62708-181-8
... fracture, tensile-shear fracture, intergranular crack, fatigue striations, and microvoid coalescence of conveyor-chain links, hub socket of aircraft propellers, and automotive intake valves of these steels. fatigue fracture fatigue striations fractograph martensitic stainless steel Surfaces...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000620
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 cast aluminum alloys and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the brittle fracture, microvoid coalescence, fatigue...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000624
EISBN: 978-1-62708-181-8
..., iron-base, molybdenum-base, and tantalum-base materials. The fractographs illustrate fatigue striations, slow-bending fracture, quasi-cleavage fracture, corrosion-fatigue fracture, fatigue crack, intergranular cleavage, microvoid coalescence, tension-overload fracture, crack propagation, impact...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000619
EISBN: 978-1-62708-181-8
..., transgranular fracture, microvoid coalescence, corrosion fatigue, fatigue striations, tensile-overload fracture, stress-corrosion cracking, and pitting corrosion of these alloys. copper alloys corrosion fatigue fatigue fracture fatigue striations fractograph stress-corrosion cracking tensile...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000623
EISBN: 978-1-62708-181-8
... fracture, crack propagation, ductile overload fracture, dimpled rupture, microvoid coalescence, and quasi-cleavage fracture of these alloys. cleavage fracture ductile fracture fatigue crack growth fatigue fracture fractograph stress-corrosion cracking tensile fracture threaded fasteners...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005657
EISBN: 978-1-62708-198-6
... of intergranular fracture alone should be avoided ( Ref 17 ). Hydrogen-embrittlement-induced fractures have been shown to exhibit microvoid coalescence (decreased size), cleavage, and intergranular morphology ( Ref 17 ). In martensitic and PH stainless steels, hydrogen embrittlement results in interfacial...
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
... 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 embrittlement. Tables 1 and 2 list some general...
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
... Dimpled IG fracture refers to the cases when microvoid coalescence occurs in (or perhaps adjacent to) grain boundaries from conditions such as creep cavitation or void nucleation at precipitates in the grain boundaries. The term IG brittle fracture is used when the grain surface does not have...
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
... is uniquely characterized by dimpled fracture surfaces due to microvoid coalescence. Microscale brittle fractures are characterized by either cleavage (transgranular brittle fracture) or intergranular embrittlement. References 1. Ross R.J. and Boit C...
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
... specimens exhibit greater strength than fine-grain specimens because of the lower grain-boundary surface area. Intergranular (IG) fracture is easily distinguishable from cleavage or microvoid coalescence ( Fig. 1 ). The fracture path of IG cracking is generally along the highest-angle grain boundary...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000603
EISBN: 978-1-62708-181-8
... the considerable deformation of the unrestrained ferrite. Fracture occurs here by ductile tearing and microvoid coalescence. SEM, 385×. Fig. 56 : River patterns indicative of brittle failure on fracture surface of a pearlitic ductile iron. SEM, 385× (F.J. Worzala, University of Wisconsin) Slow monotonic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
... part. In many types of fracture, the general plane of fracture is perpendicular to the maximum principal tensile stress. These types, called group I fractures in the following discussion, include cleavage and other brittle fractures, ductile fractures (also called microvoid coalescence and dimpled...
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
... specimen that experiences necking prior to fracture ( Fig. 3 ), where the final fracture forms the so-called cup-and-cone shape. At the microscopic scale, ductile fracture is characterized by microvoid coalescence, which results in a dimpled appearance of the fracture surface. In high-purity metals...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
..., 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, tears, fatigue striations...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003254
EISBN: 978-1-62708-176-4
.... 15b ), intergranular (see Fig. 15c ) Ductile microprocess, microvoid coalescence (see Fig. 15a ) Transmission electron microscopy (>10,000×) May have a large level of local plasticity High amount of plasticity globally RA, reduction of area Fig. 15 Examples of fracture...
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
... brittle-appearing fissures External surface and internal fissures contain reaction-scale coatings Fracture after limited dimensional change Scanning electron microscopy, 20 to 10,000× (fracture surface) Microvoids (dimples) elongated in direction of loading Single crack with no branching Surface slip...
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
... strength steels at the higher Δ K level, interinclusion material undergoes ductile fracture (microvoid coalescence). Direction of macroscopic FCP is from bottom to top in both figures. SEM, 1200× (A.D. Wilson, Lukens Steel Company) Delayed fracture of martensitic low-carbon boron steel (similar...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000609
EISBN: 978-1-62708-181-8
... ( Fig. 582 ), fatigue damage is by striation formation in the interinclusion material of an inclusion formation. At the high 55-MPa m (50-ksi in. ) level ( Fig. 583 ), ductile fracture (microvoid coalescence) of the interinclusion material occurs. See also Fig. 579 and 580 . SEM...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002404
EISBN: 978-1-62708-193-1
... the stepped facets indicative of channel fracture. (a) Type 316 irradiated to 17 dpa. (b) A type 308 shielded-metal arc weld irradiated to 14 dpa. Note the presence of microvoids superimposed on crystallographic facets in the weld. Source: Ref 43 Fig. 28 J c as a function of neutron exposure...