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ductile iron castings

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0090965
EISBN: 978-1-62708-221-1
... Abstract The upper frame from a large cone crusher failed in severe service after an unspecified service duration. The ductile iron casting was identified as grade 80-55-06, signifying minimum properties of 552 MPa (80 ksi) tensile strength, 379 MPa (55 ksi) yield strength, and 6% elongation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0089617
EISBN: 978-1-62708-232-7
... Abstract A forged 4130 steel cylindrical permanent mold, used for centrifugal casting of gray- and ductile-iron pipe, was examined after pulling of the pipe became increasingly difficult. In operation, the mold rotated at a predetermined speed in a centrifugal casting machine while the molten...
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Published: 01 June 2019
Fig. 3 Optical metallograph of ductile cast iron showing the spheroidal graphite phase in a ferrite matrix. 250× More
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Published: 01 June 2019
Fig. 4 Energy-dispersive spectroscopy of the ductile cast iron More
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Published: 01 June 2019
Fig. 1 Piston for a gun-recoil mechanism, sand cast from ductile iron conforming to MIL-I-11466, grade D7003, that fractured in fatigue because of vermicularity of graphite. (a) and (b) Two different views of the piston showing fractures; A and B indicate orifices (see text). Approximately More
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Published: 01 June 2019
Fig. 1 Oxidation and thermal fatigue cracking of a cast ductile iron rotor. See also Fig. 2 , 3 , 4 , 5 , 6 , and . More
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Published: 01 June 2019
Fig. 1 Stuffing box sand cast from ASTM A 536, grade 60-45-10, ductile iron. (a) Configuration and dimensions (given in inches). (b) Micrograph showing the structure consisting of graphite nodules in a ferritic matrix with remnants of a pearlite network. Etched with nital. 100× More
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Published: 01 June 2019
Fig. 1 Sand-cast oil-pump gears. (a) ASTM A536, grade 100-70-03, ductile iron. (b) Class 40 gray iron that fractured because of improper material selection. 0.25× More
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Published: 01 June 2019
Fig. 1 Sand-cast ductile iron brake drum from a cable-wound winch that fractured from overload caused by thermal contraction. (a) Schematic of the clutch/brake drum assembly. Dimensions given in inches. (b) Heat checks on the surface of the drum. (c) A fracture surface of the drum showing More
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Published: 01 January 2002
Fig. 8 Scanning electron micrograph of ductile cast iron graphite nodules and ferritic phase after corrosion tests. Note the loss of material at the interface of the nodule. 2000×. Source: Ref 11 , 12 More
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Published: 01 January 2002
Fig. 40 Stuffing box sand cast from ASTM A 536, grade 60-45-10, ductile iron. (a) Configuration and dimensions (given in inches). (b) Micrograph showing the structure consisting of graphite nodules in a ferritic matrix with remnants of a pearlite network. Etched with nital. 100× More
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Published: 01 January 2002
Fig. 49 Piston for a gun-recoil mechanism, sand cast from ductile iron conforming to MIL-I-11466, grade D7003, that fractured in fatigue because of vermicularity of graphite. (a) and (b) Two different views of the piston showing fractures; A and B indicate orifices (see text). Approximately More
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Published: 15 January 2021
Fig. 8 Scanning electron micrograph of ductile cast iron graphite nodules and ferritic phase after corrosion tests. Note the loss of material at the interface of the nodule. Original magnification: 2000×. Source: Ref 11 , 12 More
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Published: 30 August 2021
Fig. 27 Piston for a gun-recoil mechanism, sand cast from ductile iron conforming to MIL-I-11466, grade D7003, that fractured in fatigue because of vermicularity of graphite. (a) and (b) Two different views of the piston showing fractures; A and B indicate orifices (see text). Original More
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... the intended function is decreased. The article addresses factors that may cause failures in castings for each metal type, starting with gray iron and progressing to ductile iron, steel, aluminum, and copper-base alloys. It describes the general root causes of failure attributed to the casting material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089646
EISBN: 978-1-62708-235-8
.... Bearing journals Carbon flotation Crankshafts Segregations Surface finish Ductile iron Casting-related failures Premature failures were occurring in an engine within the first 1600 km (1000 miles) of operation. The failures involved the nodular cast iron crankshaft and its main-bearing inserts...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0047220
EISBN: 978-1-62708-220-4
... with a tensile strength of 290 MPa (42 ksi) at 207 HRB. The smaller gear was sand cast from ASTM A536, grade 100-70-03, ductile iron with a tensile strength of 696 MPa (101 ksi) at 241 HRB. Analysis (metallographic examination) supported the conclusion that excessive beam loading and a lack of ductility...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... iron, gray cast iron, malleable irons, ductile iron, low-alloy steel castings, austenitic steels, corrosion-resistant castings, and cast aluminum alloys are the materials discussed. The article describes the general types of discontinuities or imperfections for traditional casting with sand molds...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047315
EISBN: 978-1-62708-225-9
... Abstract A sand-cast gray iron flanged nut was used to adjust the upper roll on a 3.05 m (10 ft) pyramid-type plate-bending machine. The flange broke away from the body of the nut during service. Analysis (visual inspection and 150x micrographs of sections etched with nital) supported...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001633
EISBN: 978-1-62708-221-1
... Abstract Failure analysis of a mobile harbor crane wheel hub that included SEM and EDS analyses demonstrated that the mechanism of failure was fatigue. The wheel hub was a ductile cast iron component that had been subjected to cyclic loading during a ten-year service period. The fracture...