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Cleavage

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
...Abstract Abstract From a fundamental standpoint, there are only two modes, or ways, in which metals can fracture under single, or monotonic, loads: shear and cleavage. There are fracture modes other than shear and cleavage. These include intergranular and quasi-cleavage fracture modes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270084
EISBN: 978-1-62708-301-0
... in the tire increased. It explains that the hub material was of good quality under uniform load and that it fractured quickly by cleavage due to the force exerted by the overinflated tire. fractography metallography visual examination wheel hub Summary Background Visual Examination...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270138
EISBN: 978-1-62708-301-0
...Abstract Abstract A high-pressure turbine blade in an aircraft engine failed prematurely, fracturing close to the root. Visual examination revealed significant plastic deformation on the leading edge of the blade, blocky cleavage on the trailing edge, and a region covered with fissures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
...-intensity on crack propagation rates, and describes several mechanical fracture models, including corrosion tunnel, film-induced cleavage, and tarnish rupture models. crack initiation crack propagation stress-corrosion cracking STRESS-CORROSION CRACKING (SCC) is a term used to describe service...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... in the upper left corner. When viewed under the electron microscope, this type of fracture is likely to reveal a cleavage or quasi-cleavage fracture mode. Source: Ref 10 Fig. 28 Origin (at arrow) of a single-load brittle fracture that initiated at a small weld defect. Note also a fatigue fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... discusses alternative mechanisms such as twinning and cleavage fracture. While the discussions throughout this book are filled with macroscale aspects of failure, efforts are made to balance them with discussions of microscopic mechanisms whenever applicable. 2.1 Elastic and Plastic Behavior Before...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... in Steel , Steel-Strengthening Mechanisms , Climax Molybdenum Company , 1969 , p 1 – 15 11.16 McMahon C.J. Jr. , and Cohen M. , Initiation of Cleavage in Polycrystalline Iron , Acta Metall. , Vol 13 , 1965 , p 591 – 604 10.1016/0001-6160(65)90121-5 11.17 Linaza M.A...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540357
EISBN: 978-1-62708-309-6
..., and that there is a two-atom distance between the two corners. Fig. A1.10 Directional indices in a hexagonal system. Source: Ref A1.1 A1.2 Lattice Response under Stress Under stress, a crystalline lattice may change by the following three mechanisms: slip, cleavage, and mechanical twinning. Cleavage...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630081
EISBN: 978-1-62708-270-9
...-shaped pattern radiating from the origin region in the upper left corner. When viewed under the electron microscope, this type of fracture is likely to reveal a cleavage or quasi-cleavage fracture mode. (b) Fracture surface of a large (~5-¾ × 6 in.) equalizer bar made from D6B steel heat treated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090257
EISBN: 978-1-62708-266-2
... SCC fracture surface in Mg-7.6Al sheet tested in salt-chromate solution. Source: Ref 9.61 Pugh and coworkers ( Ref 9.57 , 9.58 , 9.61 ) reported that transgranular SCC occurs by discontinuous cleavage on { 31 4 ¯ 0 } planes, with the coarse stepped or pleated topography...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270172
EISBN: 978-1-62708-301-0
... was cleaned ultrasonically and observed in a stereobinocular microscope and a SEM. The fracture surface was typically of the brittle, overload type, with very little plastic deformation. A SEM fractograph showed features resembling cleavage, with indications of isolated dimples, but the overall fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... Fig. 7 Cleavage fracture in hardened steel, viewed under the scanning electron microscope. Note progression of “river” marks in the direction of arrow. Grain boundaries were crossed without apparent effect. Original magnification at 2000× Fig. 8 Intergranular fracture in hardened steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.9781627083096
EISBN: 978-1-62708-309-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... criteria provide a general characterization of SCC features: Stress-corrosion cracking represents a subcritical cracking mechanism predominated by transgranular cleavage and/or intergranular cracking and an absence of plastic deformation and transgranular microvoid coalescence. The stresses...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... experience and understanding of the four basic modes of failure: dimpled rupture, cleavage, brittle intergranular, and fatigue. From these four basic modes, the detailed mode can be examined, and the failure mechanism is fit to the evidence. A greater discussion of the mechanisms of failure is found later...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... of transgranular slip (ductile fracture), transgranular brittle fracture (cleavage), or intergranular fracture (crack propagation between grains). These different types of fracture lead to distinctly different fracture surface morphologies, as seen in Fig. 16.19 . Each of these distinct features can reveal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230151
EISBN: 978-1-62708-298-3
..., grain size must be small to limit the extent of dislocation pile-up stress at grain boundaries and to keep any resulting cleavage cracks as short as possible. Twinning is also a potential deformation mode but does not contribute at any significant extent to ambient temperature ductility...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240221
EISBN: 978-1-62708-251-8
... there are preexisting flaws. Brittle failures normally initiate as a result of cleavage that occurs by breaking of the atomic bonds. Brittle failures are characterized by rapid crack propagation, with less energy expenditure than in ductile fractures. Factors promoting brittle failures are: High yield strengths...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
.... Newman R.C. and Sieradzki K. , “ Film-Induced Cleavage During Stress-Corrosion Cracking of Ductile Metals and Alloys ,” NATO Advanced Research Workshop on Chemistry and Physics of Fracture , June 1986 10.1007/978-94-009-3665-2_37 26. Holroyd N.J.H. and Scamans G.M. , Scr...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090271
EISBN: 978-1-62708-266-2
.... A cleavage plane at approximately 15° to the basal (0001) plane predominates and is commonly observed. With basal planes aligned parallel to the rolling direction and normal to sheet or plate surfaces, highly textured (basal transverse) Ti-8Al-1Mo-1V, for example, will exhibit the least resistance to SCC...