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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001150
EISBN: 978-1-62708-235-8
... Abstract A number of rotating blades in a diffuser at a sugar beet processing plant fabricated from rectangular bars cut from rolled carbon-manganese steel plate fractured brittlely. However, apparently identical blades underwent significant plastic deformation without fracture. Inspection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089793
EISBN: 978-1-62708-235-8
.... 1 Armature for a large electric motor that failed during fabrication. The cause of failure was lamellar tearing. (a) Schematic diagram of the weld preparation and the position of the failed weld. (b) Schematic of crack initiation and propagation from the root of the weld The morphology...
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Published: 01 June 2019
Fig. 1 Armature for a large electric motor that failed during fabrication. The cause of failure was lamellar tearing. (a) Schematic diagram of the weld preparation and the position of the failed weld. (b) Schematic of crack initiation and propagation from the root of the weld More
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Published: 01 June 2019
Fig. 1 Cast conveyor chain link that fractured through fabrication weld (bottom). Secondary fracture at upper left. See also Fig. 2 . More
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Published: 01 December 1993
Fig. 2 Weld profile of a fabricated bellow More
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Published: 01 June 2019
Fig. 2 Interface microstructure of as-fabricated Midland-1 specimen (Murakami's reagent). More
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Published: 01 June 2019
Fig. 3 Delta ferrite in as-fabricated Midland specimen (modified Murakami's reagent). More
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Published: 01 June 2019
Fig. 1 Austenitic stainless steel tube that was corroded where a fabric bag was taped to it. Courtesy of M.D. Chaudhari, Columbus Metallurgical Service More
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Published: 01 June 2019
Fig. 5 Post test condition of a BFA fabricated from AISI 4130 steel after an intentional ballistics test. More
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Published: 01 June 2019
Fig. 1 Pushrod that fractured in bending fatigue after being fabricated by inertia welding. (a) Configuration and dimensions (given in inches). (b) and (c) Micrographs showing structure of decarburized inner surface and sound metal below the decarburized layer More
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Published: 01 December 2019
Fig. 5 Shear strength of all fabricated samples More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001442
EISBN: 978-1-62708-221-1
... parallel to the plane of the vanes to give fractures having the appearance of those indicated in Figures 1 and 2 . Failure in this manner indicates that the vanes have been flexing with respect to the plates as a result of service loads or vibration. It is also evident that during fabrication...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0047432
EISBN: 978-1-62708-224-2
... Abstract The conveyor chain link failed by fracturing through a fabrication weld after some time in service. The link was made of cast low-alloy steel heat treated to a hardness of 285 HRB. The fabrication weld was made using E7018 electrodes. The fracture surfaces were almost entirely covered...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001567
EISBN: 978-1-62708-230-3
... Abstract A falling film black liquor evaporator consisted of flat twin plate heat exchangers and was used to increase black liquor solids content prior to its burning in the recovery boiler. Several plate heat exchangers were fabricated of AISI type 316L stainless steel by electric resistance...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0090626
EISBN: 978-1-62708-218-1
... Abstract A steel spring used in an automotive application suddenly began to fail in the field, although “nothing had changed” in the fabrication process. Fatigue tests using springs fabricated prior to field failures lasted 500,000 cycles to failure, whereas fatigue tests performed on springs...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0048674
EISBN: 978-1-62708-222-8
... Abstract Fasteners, made in high-production progressive dies from 0.7 mm thick cold-rolled 1060 steel, were used to secure plastic fabric or webbing to the aluminum framework of outdoor furniture. It was found that approximately 30% of the fasteners cracked and fractured as they were compressed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001588
EISBN: 978-1-62708-221-1
... to 8,260 tph. Under this total loading, which was only slightly above the regular operating condition, a poorly designed and fabricated transition joint in the west lower chord failed, thereby overloading other key structural members and causing the entire truss to collapse. Another contributing cause...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048795
EISBN: 978-1-62708-220-4
... Abstract A large pressure vessel designed for use in an ammonia plant failed during hydrostatic testing. It was fabricated from ten Mn-Cr-Ni-Mo-V steel plates which were rolled and welded to form ten cylindrical shell sections and three forgings of similar composition. The fracture surfaces...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001108
EISBN: 978-1-62708-214-3
... parts revealed that the cracks initiated at the outer surface by a combined mechanism of creep and intergranular embrittlement. A smaller grain size resulting from cold bending fabrication procedures for the curved parts was responsible for accelerating the embrittlement. It was recommended that hot...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0091009
EISBN: 978-1-62708-235-8
... Abstract A thick-walled tube that was weld fabricated for use as a pressure vessel exhibited cracks. Similar cracking was apparent at the weld toes after postweld stress relief or quench-and-temper heat treatment. The cracks were not detectable by nondestructive examination after welding...