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UNS A92014

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091674
EISBN: 978-1-62708-217-4
... that the interference fit of the bushing in the lug hole be discontinued. Aircraft components Hinge brackets Marine environments 2014-T6 UNS A92014 Stress-corrosion cracking Surface treatment related failures Forged aluminum alloy 2014-T6 hinge brackets in naval aircraft rudder and aileron linkages...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091678
EISBN: 978-1-62708-217-4
... components Forgings Lugs Marine environments 2014-T6 UNS A92014 Intergranular corrosion Pitting corrosion Stress-corrosion cracking During a routine shear-pin check, the end lug on the barrel of the forward canopy actuator on a naval aircraft was found to have fractured. The lug was forged from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046022
EISBN: 978-1-62708-217-4
... before anodizing, because chromic acid destroys the penetrant. This inspection would reduce the possibility of cracked parts being used in service. Anodizing Cracking (fracturing) Forgings Straightening 2014-T6 UNS A92014 (Other, general, or unspecified) fracture Pitting corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006428
EISBN: 978-1-62708-217-4
... testing Landing gear Scanning electron microscopy 2014 UNS A92014 Stress-corrosion cracking Pitting corrosion Fatigue fracture Four nose wheel failures were received by the laboratory for determination of the cause of failure. The wheels were fabricated from 2014-T6 aluminum material and were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047169
EISBN: 978-1-62708-217-4
... in the flange by fatigue as the result of a rather large subsurface forging defect. No recommendations were made. Aircraft components Forgings Surface defects Wheels 2014-T6 UNS A92014 Metalworking-related failures Fatigue fracture The flange on an outboard main-wheel half on a commercial...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091669
EISBN: 978-1-62708-227-3
... of only aluminum alloys 6061-T6 and T651 and 2024-T6, T62, and T851. Fittings Fuel lines Marine environments Missiles 2017 UNS A92017 2014 UNS A92014 Stress-corrosion cracking During a routine inspection, cracks were discovered in several aluminum alloy coupling nuts ( Fig. 1a...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047125
EISBN: 978-1-62708-217-4
... Nonmetallic inclusions Wheels 2014-T6 UNS A92014 Fatigue fracture A commercial aircraft wheel half was removed from service because a crack was discovered in the area of the grease-dam radius during a routine inspection. The wheel half ( Fig. 1 ) was machined, from an aluminum alloy 2014 forging...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047165
EISBN: 978-1-62708-217-4
... oxidized. Because the fracture surface of the second wheel half had chromic acid stains, it was obvious that the forging defect was open to the surface during anodizing. No recommendations were made except to notify the manufacturer. Aircraft components Defects Forgings Wheels 2014-T6 UNS A92014...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001510
EISBN: 978-1-62708-217-4
... Residual stress 2014-T6 UNS A92014 Stress-corrosion cracking Introduction One failed main rotor blade grip from a UH-1N helicopter was analyzed to determine mode and cause of a longitudinal crack along the leading edge of the grip. During normal preflight operations check the maintenance crew...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001734
EISBN: 978-1-62708-234-1
... arms Aircraft components Cracking (fracturing) Fires Grain boundary melting 2014 UNS A92014 (Other, miscellaneous, or unspecified) failure Scanning electron microscope (SEM) examination of metal fractures which are induced by various combinations of loads and environmental conditions has...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001297
EISBN: 978-1-62708-215-0
... between the lead wool ballast and the aluminum spar inner surface. The pitting initiated fatigue cracking which led to the spar failure. Crack initiation Mechanical properties 2014-T652 UNS A92014 Corrosion fatigue Fatigue fracture Pitting corrosion Galvanic corrosion Background...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001022
EISBN: 978-1-62708-214-3
... and adjoining wall between the steel sleeve and the steel diaphragm washer. Metallographic analysis and accelerated corrosion tests showed that the cracks had originated as stress-corrosion failures. Forgings, corrosion Landing gear, corrosion 2014 UNS A92014 Intergranular corrosion Stress-corrosion...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001025
EISBN: 978-1-62708-214-3
... that the inspection interval be reduced to one-third of its original duration for the current level of inspection reliability, or that inspection procedures be improved in order that cracks substantially smaller than 13 mm (0.5 in.) can be reliably detected. Forgings Military planes 2014-T61 UNS A92014...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001504
EISBN: 978-1-62708-217-4
... Wheels 2014 UNS A92014 7079 UNS A97079 H11 UNS T20811 4340 UNS G43400 300M UNS K44220 Corrosion fatigue Pitting corrosion Stress-corrosion cracking Introduction Landing gears are designed to provide aircraft support and control when on the ground (steering and stopping) and to absorb...