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crack coalescence

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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.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.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: 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.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: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... crack propagation fractography metals microscale models root-cause failure analysis specimen preparation void coalescence void nucleation THE CONCEPT OF DUCTILE AND BRITTLE BEHAVIOR generally applies to the macroscopic scale. However, there is no universally accepted transition point from...
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
... of the fatigue crack that was the origin of final fracture. 3× Fig. 934 Enlarged view of one fracture surface of the lug in Fig. 933 , more clearly showing the fatigue-crack region at top left corner of the bore. Crack was nucleated at corner marked by arrow at “O.” Fatigue area extended...
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
... a toughness test in air; the rate of crack growth was in the range of rapid, unstable fracture. Dimples in an extremely wide variety of sizes and channels formed by linear coalescence of voids are evident. See Fig. 330 , 331 , 332 , 333 , 334 , and 335 for the fracture behavior of this...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... Abstract Stress-corrosion cracking (SCC) is a form of corrosion and produces wastage in that the stress-corrosion cracks penetrate the cross-sectional thickness of a component over time and deteriorate its mechanical strength. Although there are factors common among the different forms of...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000610
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 austenitic stainless steels and in identifying and interpreting the morphology of fracture surfaces. The fractographs illustrate the following: fatigue-crack fracture, rock...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
... lifetime. Physically small and long crack growth Elastic-plastic growth persists well into crack growth history; coalescence of multisite cracks can occur. Transition to linear elastic fracture mechanics-dominated homogeneous crack growth; single dominant crack is common. There are several key...
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
...-temperature creep cavitation fractures, where voids form at carbides and grow by vacancy coalescence and matrix creep. Fig. 599 : Fracture surface of Charpy specimen. Note secondary cracking due to severe bubble coalescence along grain boundaries. SEM, 125×. Fig. 600 : Same as Fig. 599 , but at higher...
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.a0000613
EISBN: 978-1-62708-181-8
...-overload fractures, impact fractures, microstructure, quench cracking, brittle-in-service failure, hydrogen embrittlement, stress-corrosion cracking, and grain-boundary cracking of tool steel components. These components include diesel engine injector plungers, rivet-heading tools, circular saw blades, and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003058
EISBN: 978-1-62708-200-6
... extension of these single flaws or the linking of several smaller flaws. At high temperatures, the fracture process involves the formation and coalescence of cavities, frequently preceded by some nonlinear deformation ( Ref 18 ). Typically, flaws include internal or surface cracks, large voids, inclusions...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000621
EISBN: 978-1-62708-181-8
..., tension-overload fracture surface, ductile fracture, cone-shaped fracture surface, intergranular crack propagation, transgranular crack propagation, stress-corrosion cracking, hydrogen damage, and grain-boundary separation of these alloys. Fractographs are also provided for a forged aircraft main-landing...
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
... ): Accumulation of local irreversible plastic deformation Creation of microscopic flaws Growth and coalescence of flaws to form one or more macroscopic cracks Careful laboratory study of unnotched high-purity metals and alloys has shown that repeated plastic deformation can result in localization of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003227
EISBN: 978-1-62708-199-3
... fracture of metals, including laps, seams, cold shuts, cracks, inclusions, porosity, fatigue, and stress corrosion cracking. failure analysis fractography macroscopic examination microscopic examination stress corrosion cracking surface defects visual examination EXAMINATION of a...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005411
EISBN: 978-1-62708-196-2
...-boundary cavitation evolves ahead of the crack tip. The cavities can grow both in numbers and size and can eventually coalesce to advance the crack. Such crack growth is dominantly intergranular. The kinetics of cavity growth have been modeled as either diffusive growth or as growth constrained by the...
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
... general aspects of fracture modes and mechanisms. The article briefly reviews some mechanistic aspects of ductile and brittle crack propagation, including discussion on mixed-mode cracking. Factors associated with overload failures are discussed, and, where appropriate, preventive steps for reducing the...