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Mixed-mode fracture

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Published: 01 January 2002
Fig. 12 Mixed mode fracture in a mild carbon steel cooled just to the ductile/brittle transition More
Image
Published: 15 January 2021
Fig. 12 Mixed-mode fracture in a mild carbon steel cooled just to the ductile/brittle transition More
Image
Published: 01 December 2019
Fig. 13 Fractograph of sample A, demonstrating mixed mode fracture More
Image
Published: 01 December 1993
Fig. 5 (a) Mixed-mode cracking in cross section. Fry's reagent, 308×. (b) Fracture surface in cross section. Fry's reagent. 308×. More
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
... of deleterious intermetallic compounds within interdendritic regions. Macrohardness testing produced hardness values which are noticeably higher than standard hardness values for 712.0. The primary fracture surfaces indicate evidence of mixed-mode fracture, via intergranular cracking, cleaved intermetallic...
Image
Published: 01 January 2002
Fig. 46 Fisheyes in E7018 weld metal. (a) Fisheyes in as-welded tensile specimen tested at room temperature. Optical macrograph. (b) Mixed-mode fracture in as-welded three-point bend test specimen at room temperature (SEM). Optical fractograph More
Image
Published: 30 August 2021
Fig. 14 (a) Brittle fisheyes appear as bright spots in gray ductile matrix. Original magnification: 1.7×. (b) Mixed-mode fracture in as-welded three-point bend-test specimen at room temperature (scanning electron microscope). Optical fractography. Original magnification: 1500× More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0090943
EISBN: 978-1-62708-219-8
... review of the potential root cause. Weld repairs Worm gears Manganese bronze Mixed-mode fracture A very large diameter worm gear that had been in service in a dam for more than 60 years exhibited cracks and was removed. It was reported that the cast bronze gear was only rarely stressed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0089338
EISBN: 978-1-62708-224-2
... Mixed-mode fracture A steel lifting eye that had fractured during service is shown in Fig. 1 . No additional service-related information was provided. The eye was reportedly manufactured from a grade 1144 steel and should exhibit a minimum tensile strength of 689 MPa (100 ksi). Fig. 1 Steel...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001035
EISBN: 978-1-62708-214-3
..., adjacent to the keyway. Fig. 6 SEM micrograph of flat fracture characterstics in the area shown in Fig. 5 , composed of cleavage with river patterns. 4000×. Surprisingly, when the rough central area of the axle fracture was examined, a mixed mode of fracture—both brittle cleavage facets...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0090988
EISBN: 978-1-62708-236-5
... treatment, that may have contributed to this failure. Bursting strength Cylinder pipe Decarburization 1045 UNS G10450 Mixed-mode fracture A jack cylinder split open during simulated service testing ( Fig. 1a ). The intended internal test pressurization was reportedly analogous to typical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0089663
EISBN: 978-1-62708-229-7
... Precipitates Steam turbines ASTM A356 grade 6 UNS J12073 Casting-related failures Mixed-mode fracture When a crack developed in a cast steel steam-turbine casing, a small section of the casing was removed by torch cutting to examine the crack completely and to determine its origin. The crack...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001173
EISBN: 978-1-62708-218-1
... Hydrogen damage and embrittlement Mixed-mode fracture For many years ball joints used in heavy vehicle steering joints had given satisfactory service. Suddenly, some failed a few hours after being fitted but before the vehicle had gone into service. Failure occurred in the necked part...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0049797
EISBN: 978-1-62708-235-8
... was thus attributed to the presence of the quench crack flaw caused by an improper machining sequence and heat treatment practice. Connecting rods Quench cracking Threads 4340 UNS G43400 Mixed-mode fracture An AISI 4340 threaded steel connecting rod was part of a connecting linkage used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001585
EISBN: 978-1-62708-231-0
... fracture with short-term exposure to an oxygen-rich environment. Fracture features emanated from longitudinally-aligned inclusions rich in aluminum. Inclusions Rails (railroad) Carbon-manganese steel Mixed-mode fracture The National Transportation Safety Board simultaneously investigates...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001523
EISBN: 978-1-62708-227-3
... the comers of the flame-cut cloverleaf lobe. This new manufacturing process solved the problem. Decks Ductile brittle transition Residual stress Transport ships ABS AH36 Mixed-mode fracture Metalworking-related failures Introduction The first of the TAKR 300 (Bob Hope) Class...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001479
EISBN: 978-1-62708-229-7
..., the material being drawn out to a feather edge at the time of rupture. Other ruptures in the same and other tubes were of a more brittle type, this being associated with penetration of material by molten copper derived from scale. Boiler tubes Copper Scale (corrosion) Steel tube Mixed-mode fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001140
EISBN: 978-1-62708-227-3
... employing the “leak-before-break” design philosophy, developed using fracture mechanics, to eliminate the possibility of catastrophic ruptures. Gas cylinders Sea water Al-5Mg Mixed-mode fracture Stress-corrosion cracking Introduction The employment of light cylinders made of aluminum...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001252
EISBN: 978-1-62708-235-8
...) Forgings Ingots Precipitates Fe-0.39C-1.38Mn-0.325Mo Mixed-mode fracture An octagonal steel ingot weighing 13 tons made of manganese-molybdenum steel containing 0.39% C, 0.41% Si, 1.38% M n, 0.014% P, 0.009% S and 0.325% Mo, developed gaping cross-cracks on all eight sides in the forging press...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0089254
EISBN: 978-1-62708-225-9
... of low-alloy steel was suggested as recommendation. Design Locking devices Materials selection 1144 UNS G11440 Mixed-mode fracture ( Ref 1 ). A design deficiency involving improper materials selection was revealed through the analysis of a failed tapered-ring sprocket locking device...