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Chromium plating

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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 June 2019
Fig. 4 Fatigue crack growth in crankshaft shows beach marks. Chromium plating, about 0.010 in. thick, is indicated by arrows More
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Published: 01 June 2019
Fig. 5 Chromium plating on an unworn journal has a multitude of cracks. Magnification 100 times; 2 pct nital. More
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Published: 01 December 1993
Fig. 2 Indications of cracking in the hard chromium plating (arrow) at the axle (lower) end. Note the banded appearance of the cracking. More
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Published: 01 December 1993
Fig. 8 Section through the cracking adjacent to the chromium plating runout.C,chromium; S,steel.The arrows indicate regions of transgranular cracking produced by fatigue, which grew from the intergranular crack tips.2% nital etch. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001722
EISBN: 978-1-62708-236-5
... Abstract The crankshaft of a 37.5-hp, 3-cylinder oil engine was examined. The engine had been dismantled for the purpose of a general overhaul and in the course of this work the crankpins were chromium-plated before regrinding. The engine was returned to service and after running for 290 h...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0091378
EISBN: 978-1-62708-219-8
... Abstract A 12.7 mm (0.5 in.) diam tube was removed from a potable water supply due to leaks. The tube wall thickness was 0.711 mm (0.028 in.) with a thin layer of chromium plate on the OD surface. The tube had been in service for approximately 33 years. Investigation (visual inspection, EDS...
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Published: 01 June 2019
Fig. 1 Exposed crack surface of a chromium-plated 15-5 PH cylinder that failed following manufacturing. 32× More
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Published: 01 June 2019
Fig. 2 Exposed crack surfaces of a chromium-plated 15-5 PH cylinder that failed during pressure impulse testing. 9× More
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Published: 01 June 2019
Fig. 2 Chromium plate in bearing was thick, porous, and cracked in many places. More
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Published: 01 January 2002
Fig. 40 Views of a through-wall perforation of a chromium-plated α brass (70Cu-30Zn) tube removed from a potable water system due to dezincification. (a) Macroview of tube. (b) Inside diameter surface of the tube shown in (a), depicting localized green deposits at the areas of dezincification More
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Published: 01 January 2002
Fig. 25 Failed chromium-plated blanking die made from AISI A2 tool steel. (a) Cracking (arrows) that occurred shortly after the die was placed in service. (b) Cold-etched (10% aqueous nitric acid) disk cut from the blanking die (outlined area) revealing a light-etching layer. Actual size. (c More
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Published: 01 June 2019
Fig. 4 Section through chromium plated layer at defect. (×18). More
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Published: 01 June 2019
Fig. 5 Section through chromium plated layer at fatigue crack. (×18). More
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Published: 01 June 2019
Fig. 1 Views of a through-wall perforation of a chromium-plated α brass (70Cu-30Zn) tube removed from a potable water system due to dezincification. (a) Macroview of tube. (b) Inside diameter surface of the tube shown in (a), depicting localized green deposits at the areas of dezincification More
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Published: 01 June 2019
Fig. 2 Chromium plated retaining ring from lower stem bearing of the bicycle, showing extensive cracking More
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Published: 30 August 2021
Fig. 25 Failed chromium-plated blanking die made from AISI A2 tool steel. (a) Cracking (arrows) that occurred shortly after the die was placed in service. (b) Cold-etched (10% aqueous nitric acid) disk cut from the blanking die (outlined area) revealing a light-etching layer. Actual size. (c More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001539
EISBN: 978-1-62708-236-5
... Abstract Overhaul mechanics discovered a crack in an AISI 4340 Cr-Mo-Ni alloy steel pivot bolt when grinding off the chromium plating. The bolt had served for an estimated 10,000 h and was replated when last overhauled. On checking the bolt, several fine cracks were found on the surface...
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
... Abstract The outer tube, or stem, on a bicycle frame fractured after two years of use. Detailed investigation revealed that the lower stem bearing had been loose for some time and the bottom bearing cup contained many cracks. Metallographic examination of the chromium-plated cup confirmed...