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ductile iron

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0089657
EISBN: 978-1-62708-233-4
... Abstract The gun mount used in two types of self-propelled artillery consists of an oil-filled recoil cylinder and a sand-cast (MIL-I-11466, grade D7003) ductile-iron piston that connects to the gun tube through a threaded rod. The piston contains several orifices through which oil is forced...
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...
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.matlhand.c0047321
EISBN: 978-1-62708-224-2
... Abstract A 58.4 cm (23 in.) diam heavy-duty brake drum component of a cable-wound winch broke into two pieces during a shutdown period. Average service life of these drums was two weeks; none had failed by wear. The drums were sand cast from ductile iron. During haul-out, the cable on the cable...
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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 Failure of a ductile iron cone-crusher frame. (a) Near-surface microstructure of the frame showing degenerate graphite morphology rather than the intended nodular structure evident in the core. Unetched. 30×. (b) The typical frame microstructure also exhibits high levels of ferrite 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. 1 SEM images of (a) IG fracture in ion-nitrided layer of ductile iron (ASTM 80-55-06), (b) transgranular fracture by cleavage in ductile iron (ASTM 80-55-06), and (c) ductile fracture with equiaxed dimples from microvoid coalescence around graphite nodules in a ductile iron (ASTM 65-40-10 More
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Published: 01 January 2002
Fig. 8 Crack in a high-strength ductile iron (grade 100-70-03) impeller showing deformation in the ferrite resulting in blunting of this secondary crack. 2% nital etch. 492× More
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Published: 01 January 2002
Fig. 18 Failure of a ductile iron cone-crusher frame ( example 7 ). (a) Near-surface microstructure of the frame showing degenerate graphite morphology rather than the intended nodular structure evident in the core. Unetched. 30×. (b) The typical frame microstructure also exhibits high levels More
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Published: 01 January 2002
Fig. 3 Shrinkage porosity at bolt-hole bosses in a ductile-iron cylinder head More
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Published: 01 January 2002
Fig. 11 Ductile-iron crankshaft segment essentially free of exogenous inclusions (1, left) and with numerous exogenous inclusions (2, right). Low pouring temperature and poor mold filling practice were the cause of the inclusions in part 2. 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. 48 Tensile and yield strength of ductile iron versus visually assessed nodularity. Source: Ref 41 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: 30 August 2021
Fig. 8 Ductile iron crankshaft segment essentially free of exogenous inclusions (1, left) and with numerous exogenous inclusions (2, right). Low pouring temperature and poor mold-filling practice were the cause of the inclusions in part 2. More
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Published: 30 August 2021
Fig. 20 Tensile and yield strength of ductile iron versus visually assessed nodularity. Source: Ref 21 More