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Cracking (fracturing)

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Published: 01 September 2008
Fig. 27 Metallographic examination of primary crack. Fracture path followed prior-austenite grain boundaries. No precipitates in grain boundaries (50 μm) were observed. More
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Published: 01 December 2018
Fig. 6.103 SEM macrograph at ID edge showing multiple crack initiation points (white arrows) and auxiliary cracking on crack fracture surface (black arrows). The overall fracture surface was relatively brittle and covered with corrosion products/scales, 50×. More
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Published: 01 June 2007
Fig. 45 SEM image of the fracture surface of a PM 434L sintered part which failed due to intergranular stress corrosion cracking. Fracture progressed along the grain boundaries of the well-sintered sample More
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Published: 01 September 2008
Fig. 37 Fracture surface of the crack in the failed screw after the crack was opened in the laboratory. “L” indicates the laboratory-induced overload region. Original magnification: 20×. Source: Ref 20 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270199
EISBN: 978-1-62708-301-0
... 1 and 2 , ASM International , 1992 and 1993 10.31399/asm.fach.v01.9781627082143 Goel V.S. , et al. , Ed., Analyzing Failures: The Problems and Solutions , Proc. International Conference and Exposition on Fatigue, Corrosion Cracking, Fracture Mechanics and Failure Analysis ( Salt...
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
... into two or more pieces under the action of stress. Fracture can be classified into two broad categories: ductile fracture and brittle fracture. As shown in the Fig. 13.1 comparison, ductile fractures are characterized by extensive plastic deformation prior to and during crack propagation. Brittle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... 180° apart in the retainer ring groove location shown in Fig. 3 . The crack lengths were 22 and 25 mm (0.85 and 0.99 in.). No cracks were detected in the T-head. The radius at the primary fracture of the strain bar was determined to be 1.3 mm (0.050 in.) At the secondary cracks, the radius was 1.14...
Image
Published: 01 September 2008
Fig. 24 Overall view of the cracked pinion showing the location of the fracture and the presence of a discolored region More
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Published: 01 September 2008
Fig. 18 Region adjacent to the fractured region showing a transgranular crack generated in the casting process and masked by material deformation during the radio machining process, with propagation directed to the internal diameter More
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Published: 01 September 2008
Fig. 27 Surface fracture spring. The dotted arrow shows the fatigue crack nucleus, and the dashed arrow shows the fatigue-to-brittle fracture transition. The solid arrow shows the surface analyzed by scanning electron microscopy. Original magnification: 6× More
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Published: 01 October 2011
Fig. 7.16 The SS Schenectady after a sudden fracture due to rapid growth of a crack that started in a hull weld More
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Published: 01 August 2013
Fig. 10.4 Sketch showing some fibers fracturing at a crack and others pulling out. Source: Ref 10.1 More
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Published: 01 January 2017
Fig. 3.27 Stress-corrosion cracking resistance and fracture toughness of HP 9-4-45 steel. Source: Ref 3.6 More
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Published: 01 January 2017
Fig. 3.28 Stress-corrosion cracking resistance and fracture toughness of 18Ni maraging steel. Source: Ref 3.6 More
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Published: 01 January 2017
Fig. 18.16 Sectioning allowed partial exposure of the fracture surfaces of the crack in Fig. 18.15 . Note the radial line pattern converging at the surface site of crack initiation just above the “3” on the ruler. Source: Ref 18.53 More
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Published: 01 March 2002
Fig. 4.18 Stress-corrosion cracking found at the root of a thread on the fractured bolt shown in Fig. 4.17 . Unetched. 32× More
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Published: 30 November 2013
Fig. 5 Surface of a torsional fatigue crack that caused brittle fracture of the case of an induction-hardened axle of 1541 steel. The fatigue crack originated (arrow) at a fillet (with a radius smaller than specified) at a change in shaft diameter near a keyway runout. Case hardness was about More
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Published: 30 November 2013
Fig. 7 Stress-corrosion crack in a high-strength steel part (4×). The fracture surface appears to have the characteristic beach mark pattern of a fatigue fracture. However, this was a stress-corrosion fracture in which the pattern was caused by differences in the rate of corrosion penetration More
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Published: 01 September 2008
Fig. 6 SEM fractographs of the fracture surfaces of cracks 1 and 2 in the strain bar. (a) Fracture surface of crack 1, showing typical fatigue zones at arrows (750 μm). (b) Typical fatigue striations in crack 1 fatigue zones (30 μm). (c) Fracture surface at crack 2 of the strain bar, showing More
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Published: 01 September 2008
Fig. 18 Fracture surfaces. (a) Circumferential crack 1 (4.3 mm). (b) Circumferential crack 2 (4.3 mm). (c) Longitudinal crack (5 mm) More