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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0046366
EISBN: 978-1-62708-236-5
... Abstract Several large chromium-plated 4340 steel cylinders were removed from service because of deep longitudinal score marks in the plating. One of the damaged cylinders and a mating cast aluminum alloy B850-T5 bearing adapter that also exhibited deep longitudinal score marks were submitted...
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Published: 01 June 2019
Fig. 1 Scoring damage caused by chipping of chromium plating on a 4340 steel cylinder. (a) Scoring on the cylinder. (b) Scoring on a mating cast aluminum alloy B850-T5 bearing adapter. (c) Cross section through a deep score mark in the aluminum alloy adapter revealing a large embedded particle More
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Published: 01 December 2019
Fig. 6 Shaft portion showing concentric scoring on the surface under the bearing race More
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Published: 01 December 2019
Fig. 7 Inner surface of the bearing race ( a ) scoring marks and ( b ) same features in the cross section revealing material stock dislodged from shaft and stuck to inner surface of bearing More
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Published: 30 August 2021
Fig. 42 Failure due to a band of carbides. (a) AISI A2 scoring die spalled at the cutting edge during either the stoning or final grinding step after heat treatment. (b) Sectioning through the spalled region revealed a band of carbides intersecting the edge profile that promoted cracking More
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Published: 01 June 2019
Fig. 6 Radius between groove and flange with crack-like score marks. 200 × More
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Published: 30 August 2021
Fig. 9 Images of a bearing and associated axle shaft. (a) Scored inside-diameter surface of the bearing. (b) Severely worn region on the axle. (c) Cross section of a region with stepped abrasive wear More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c9001694
EISBN: 978-1-62708-222-8
... the brittle nature of the cracks, located along prior austenite boundaries. The failure was attributed to hydrogen embrittlement due to improper manufacturing procedures following chromium plating. The cracking led to looseness in the bearing and consequent scoring, cracking, and overloading of the stem...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047975
EISBN: 978-1-62708-225-9
... of the transmission. The center bearing of the transmission input-shaft ball-bearing stack had a broken cage and one ball was found to have been split into several pieces. Several scored balls and flaking damage in the raceways of the inner and outer rings was observed. The origin (area in rectangle) was oriented...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006791
EISBN: 978-1-62708-295-2
... modes of adhesive wear including scoring, scuffing, seizure, and galling, and describes the processes involved in classic laboratory-type and standardized tests for the evaluation of adhesive wear. It includes information on standardized galling tests, twist compression, slider-on-flat-surface, load...
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
... steel for centrifugal casting of gray- and ductile-iron pipe that failed because of localized overheating. The failure was caused by splashing of molten metal at the spigot end. Subsequent overheating resulted in mold-wall spalling and scoring, details of which are shown in the photographs. Dimensions...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001799
EISBN: 978-1-62708-241-9
... later stage of crack progress Fig. 4 Progression marks on the fracture surface near the primary source Fig. 5 Ratchet marks showing a number of secondary sources of cracks Fig. 6 Shaft portion showing concentric scoring on the surface under the bearing race Fig. 7...
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Published: 01 June 2019
Fig. 6 Cut in upper rim of piece of waste towel receptacle has extrusion effect at lefthand side and bottom. Close-up of scoring in cut (right) shows direction of force. More
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Published: 30 August 2021
Fig. 8 Sliding bearings damaged by abrasion by foreign particles. (a) Unetched specimen showing a large foreign particle (arrow) at the interface of a bearing and shaft. Original magnification: 110×. (b) Bearing surface scored by metal chips More
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Published: 01 June 2019
Fig. 1 Permanent mold of 4130 steel for centrifugal casting of gray- and ductile-iron pipe that failed because of localized overheating. The failure was caused by splashing of molten metal at the spigot end. Subsequent overheating resulted in mold-wall spalling and scoring, details of which More
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Published: 01 January 2002
Fig. 30 Permanent mold of 4130 steel for centrifugal casting of gray- and ductile-iron pipe that failed because of localized overheating. The failure was caused by splashing of molten metal at the spigot end. Subsequent overheating resulted in mold-wall spalling and scoring, details of which More
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Published: 30 August 2021
Fig. 10 Permanent mold of 4130 steel for centrifugal casting of gray and ductile iron pipe that failed because of localized overheating. The failure was caused by splashing of molten metal at the spigot end. Subsequent overheating resulted in mold-wall spalling and scoring, details of which More
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Published: 01 June 2019
Fig. 2 Helicopter-blade spindle that fractured in fatigue because it was incompletely shot peened before being plated. (a) Spindle showing fracture region (at fillet between shank and fork). Dimensions given in inches. (b) Longitudinal score mark (region A) and circumferential scratches (arrow More
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Published: 01 June 2019
Fig. 1 Helicopter-blade spindle that fractured in fatigue because it was incompletely shot peened before being plated. (a) Spindle showing fracture region (at fillet between shank and fork). Dimensions given in inches. (b) Longitudinal score mark (region A) and circumferential scratches (arrow More
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Published: 01 June 2019
Fig. 1 52100 steel jet-engine ball bearing that failed because of overheating resulting from misalignment. (a) Photograph of bearing components showing fractured cage. (b) Enlarged view of cage showing damage caused by scoring, scuffing, and plastic deformation around ball pockets More